./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_byte_buf_from_array_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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:55:28,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:55:28,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:55:29,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:55:29,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:55:29,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:55:29,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:55:29,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:55:29,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:55:29,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:55:29,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:55:29,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:55:29,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:55:29,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:55:29,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:55:29,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:55:29,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:55:29,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:55:29,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:55:29,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:55:29,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:55:29,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:55:29,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:55:29,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:55:29,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:55:29,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:55:29,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:55:29,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:55:29,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:55:29,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:55:29,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:55:29,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:55:29,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:55:29,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:55:29,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:55:29,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:55:29,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:55:29,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:55:29,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:55:29,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:55:29,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:55:29,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:55:29,080 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:55:29,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:55:29,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:55:29,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:55:29,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:55:29,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:55:29,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:55:29,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:55:29,084 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:55:29,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:55:29,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:55:29,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:55:29,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:55:29,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:55:29,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:55:29,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:55:29,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:55:29,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:55:29,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:55:29,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:55:29,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:55:29,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:55:29,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:55:29,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:55:29,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:55:29,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:55:29,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:55:29,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:55:29,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:55:29,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:55:29,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:55:29,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2021-12-22 13:55:29,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:55:29,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:55:29,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:55:29,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:55:29,286 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:55:29,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-12-22 13:55:29,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a40f45d2/641307b8fa6a47cf88ed1813bf308b6e/FLAG158a128f1 [2021-12-22 13:55:29,995 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:55:29,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-12-22 13:55:30,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a40f45d2/641307b8fa6a47cf88ed1813bf308b6e/FLAG158a128f1 [2021-12-22 13:55:30,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a40f45d2/641307b8fa6a47cf88ed1813bf308b6e [2021-12-22 13:55:30,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:55:30,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:55:30,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:55:30,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:55:30,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:55:30,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:55:30" (1/1) ... [2021-12-22 13:55:30,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dc869b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:30, skipping insertion in model container [2021-12-22 13:55:30,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:55:30" (1/1) ... [2021-12-22 13:55:30,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:55:30,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:55:30,643 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_byte_buf_from_array_harness.i[4497,4510] [2021-12-22 13:55:30,648 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_byte_buf_from_array_harness.i[4557,4570] [2021-12-22 13:55:31,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,177 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,193 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:55:31,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:55:31,394 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:55:31,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:55:31,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:55:31,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:55:31,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:55:31,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:55:31,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:55:31,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:55:31,483 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:55:31,530 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,530 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:55:31,595 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:55:31,603 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_byte_buf_from_array_harness.i[4497,4510] [2021-12-22 13:55:31,603 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_byte_buf_from_array_harness.i[4557,4570] [2021-12-22 13:55:31,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,639 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,639 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:55:31,670 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:55:31,671 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:55:31,671 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:55:31,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:55:31,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:55:31,673 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:55:31,673 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:55:31,673 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:55:31,674 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:55:31,691 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:55:31,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:55:31,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:55:31,931 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:55:31,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31 WrapperNode [2021-12-22 13:55:31,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:55:31,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:55:31,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:55:31,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:55:31,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,099 INFO L137 Inliner]: procedures = 690, calls = 2615, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 766 [2021-12-22 13:55:32,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:55:32,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:55:32,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:55:32,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:55:32,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:55:32,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:55:32,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:55:32,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:55:32,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (1/1) ... [2021-12-22 13:55:32,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:55:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:32,221 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) [2021-12-22 13:55:32,242 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 [2021-12-22 13:55:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-22 13:55:32,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-22 13:55:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:55:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:55:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:55:32,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:55:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:55:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:55:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:55:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:55:32,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:55:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:55:32,266 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:55:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:55:32,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:55:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:55:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:55:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:55:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:55:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:55:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:55:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:55:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2021-12-22 13:55:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2021-12-22 13:55:32,480 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:55:32,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:55:33,140 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:55:33,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:55:33,149 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:55:33,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:55:33 BoogieIcfgContainer [2021-12-22 13:55:33,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:55:33,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:55:33,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:55:33,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:55:33,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:55:30" (1/3) ... [2021-12-22 13:55:33,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a641bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:55:33, skipping insertion in model container [2021-12-22 13:55:33,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:31" (2/3) ... [2021-12-22 13:55:33,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a641bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:55:33, skipping insertion in model container [2021-12-22 13:55:33,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:55:33" (3/3) ... [2021-12-22 13:55:33,169 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2021-12-22 13:55:33,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:55:33,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:55:33,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:55:33,217 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 [2021-12-22 13:55:33,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:55:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.25) internal successors, (65), 53 states have internal predecessors, (65), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 13:55:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 13:55:33,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:33,238 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:33,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash -537066619, now seen corresponding path program 1 times [2021-12-22 13:55:33,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:33,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945001155] [2021-12-22 13:55:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:33,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:33,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:33,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945001155] [2021-12-22 13:55:33,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945001155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:33,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:33,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:55:33,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942781509] [2021-12-22 13:55:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:33,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:55:33,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:55:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:55:33,743 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.25) internal successors, (65), 53 states have internal predecessors, (65), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:33,859 INFO L93 Difference]: Finished difference Result 145 states and 195 transitions. [2021-12-22 13:55:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:55:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-12-22 13:55:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:33,872 INFO L225 Difference]: With dead ends: 145 [2021-12-22 13:55:33,872 INFO L226 Difference]: Without dead ends: 68 [2021-12-22 13:55:33,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:55:33,880 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:33,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 113 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-22 13:55:33,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-12-22 13:55:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-22 13:55:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-12-22 13:55:33,914 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 33 [2021-12-22 13:55:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:33,914 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-12-22 13:55:33,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2021-12-22 13:55:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 13:55:33,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:33,917 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:33,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:55:33,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 365093061, now seen corresponding path program 1 times [2021-12-22 13:55:33,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465817470] [2021-12-22 13:55:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:33,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:34,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:34,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465817470] [2021-12-22 13:55:34,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465817470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:34,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:34,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:55:34,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436058585] [2021-12-22 13:55:34,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:34,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:55:34,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:34,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:55:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:34,122 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:34,273 INFO L93 Difference]: Finished difference Result 123 states and 152 transitions. [2021-12-22 13:55:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:55:34,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-12-22 13:55:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:34,276 INFO L225 Difference]: With dead ends: 123 [2021-12-22 13:55:34,276 INFO L226 Difference]: Without dead ends: 71 [2021-12-22 13:55:34,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:55:34,277 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 59 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:34,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 173 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-22 13:55:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-12-22 13:55:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2021-12-22 13:55:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2021-12-22 13:55:34,285 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 33 [2021-12-22 13:55:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:34,286 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2021-12-22 13:55:34,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2021-12-22 13:55:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 13:55:34,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:34,287 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:34,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:55:34,288 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1309209872, now seen corresponding path program 1 times [2021-12-22 13:55:34,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:34,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487903765] [2021-12-22 13:55:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:34,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:34,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:34,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487903765] [2021-12-22 13:55:34,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487903765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:34,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:34,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:55:34,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028896187] [2021-12-22 13:55:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:34,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:55:34,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:34,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:55:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:55:34,491 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:34,706 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2021-12-22 13:55:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2021-12-22 13:55:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:34,707 INFO L225 Difference]: With dead ends: 83 [2021-12-22 13:55:34,708 INFO L226 Difference]: Without dead ends: 81 [2021-12-22 13:55:34,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:55:34,708 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 60 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:34,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 376 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-22 13:55:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-12-22 13:55:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 57 states have internal predecessors, (63), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-12-22 13:55:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2021-12-22 13:55:34,714 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 39 [2021-12-22 13:55:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:34,715 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2021-12-22 13:55:34,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2021-12-22 13:55:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:34,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:34,716 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:34,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:55:34,716 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -853000232, now seen corresponding path program 1 times [2021-12-22 13:55:34,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591305681] [2021-12-22 13:55:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:34,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:34,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:34,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591305681] [2021-12-22 13:55:34,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591305681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:34,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:34,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:55:34,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60295714] [2021-12-22 13:55:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:34,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:55:34,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:55:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:34,911 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:35,109 INFO L93 Difference]: Finished difference Result 164 states and 204 transitions. [2021-12-22 13:55:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:55:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-12-22 13:55:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:35,111 INFO L225 Difference]: With dead ends: 164 [2021-12-22 13:55:35,111 INFO L226 Difference]: Without dead ends: 105 [2021-12-22 13:55:35,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:35,112 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:35,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 217 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-22 13:55:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-12-22 13:55:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 62 states have internal predecessors, (70), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-12-22 13:55:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2021-12-22 13:55:35,118 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 43 [2021-12-22 13:55:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:35,118 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2021-12-22 13:55:35,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2021-12-22 13:55:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:35,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:35,119 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:35,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:55:35,119 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash -594834794, now seen corresponding path program 1 times [2021-12-22 13:55:35,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:35,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164393467] [2021-12-22 13:55:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:35,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:35,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:35,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:35,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164393467] [2021-12-22 13:55:35,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164393467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:35,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:35,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:55:35,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426156820] [2021-12-22 13:55:35,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:35,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:35,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:35,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:35,402 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:35,736 INFO L93 Difference]: Finished difference Result 180 states and 226 transitions. [2021-12-22 13:55:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-22 13:55:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:35,738 INFO L225 Difference]: With dead ends: 180 [2021-12-22 13:55:35,740 INFO L226 Difference]: Without dead ends: 111 [2021-12-22 13:55:35,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:35,742 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 127 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:35,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 278 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:55:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-22 13:55:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2021-12-22 13:55:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 83 states have internal predecessors, (93), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-22 13:55:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2021-12-22 13:55:35,754 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 43 [2021-12-22 13:55:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:35,754 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2021-12-22 13:55:35,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2021-12-22 13:55:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:35,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:35,758 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:35,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:55:35,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1874698472, now seen corresponding path program 1 times [2021-12-22 13:55:35,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:35,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305489737] [2021-12-22 13:55:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:35,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:55:36,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:36,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305489737] [2021-12-22 13:55:36,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305489737] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:36,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569277811] [2021-12-22 13:55:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:36,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:36,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:36,347 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) [2021-12-22 13:55:36,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:55:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:36,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-22 13:55:36,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:36,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:36,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:36,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:36,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-22 13:55:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:37,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:37,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569277811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:37,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:37,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2021-12-22 13:55:37,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853413513] [2021-12-22 13:55:37,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:37,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:55:37,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:55:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-12-22 13:55:37,240 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:37,302 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2021-12-22 13:55:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:37,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-22 13:55:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:37,303 INFO L225 Difference]: With dead ends: 233 [2021-12-22 13:55:37,303 INFO L226 Difference]: Without dead ends: 119 [2021-12-22 13:55:37,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:55:37,305 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 25 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:37,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 327 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2021-12-22 13:55:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-22 13:55:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2021-12-22 13:55:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 92 states have internal predecessors, (104), 17 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-22 13:55:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 145 transitions. [2021-12-22 13:55:37,313 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 145 transitions. Word has length 43 [2021-12-22 13:55:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:37,313 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 145 transitions. [2021-12-22 13:55:37,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 145 transitions. [2021-12-22 13:55:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:37,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:37,314 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:37,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:37,530 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,SelfDestructingSolverStorable5 [2021-12-22 13:55:37,531 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 573755484, now seen corresponding path program 1 times [2021-12-22 13:55:37,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:37,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204726986] [2021-12-22 13:55:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:37,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:37,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:37,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204726986] [2021-12-22 13:55:37,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204726986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:37,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:37,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:55:37,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235199254] [2021-12-22 13:55:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:37,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:55:37,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:55:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:55:37,803 INFO L87 Difference]: Start difference. First operand 116 states and 145 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:38,098 INFO L93 Difference]: Finished difference Result 223 states and 278 transitions. [2021-12-22 13:55:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:55:38,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-22 13:55:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:38,099 INFO L225 Difference]: With dead ends: 223 [2021-12-22 13:55:38,100 INFO L226 Difference]: Without dead ends: 140 [2021-12-22 13:55:38,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:55:38,101 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 76 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:38,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 271 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-22 13:55:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 122. [2021-12-22 13:55:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 98 states have internal predecessors, (112), 17 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-22 13:55:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2021-12-22 13:55:38,109 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 43 [2021-12-22 13:55:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:38,109 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2021-12-22 13:55:38,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2021-12-22 13:55:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:38,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:38,110 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:38,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:55:38,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash 831920922, now seen corresponding path program 1 times [2021-12-22 13:55:38,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:38,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060620635] [2021-12-22 13:55:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:38,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:38,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:38,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060620635] [2021-12-22 13:55:38,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060620635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:38,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:38,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:55:38,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100433221] [2021-12-22 13:55:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:38,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:55:38,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:55:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:38,281 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:38,496 INFO L93 Difference]: Finished difference Result 236 states and 300 transitions. [2021-12-22 13:55:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:55:38,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-12-22 13:55:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:38,498 INFO L225 Difference]: With dead ends: 236 [2021-12-22 13:55:38,498 INFO L226 Difference]: Without dead ends: 147 [2021-12-22 13:55:38,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:55:38,499 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 55 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:38,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 226 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-22 13:55:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 122. [2021-12-22 13:55:38,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 98 states have internal predecessors, (110), 17 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-22 13:55:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2021-12-22 13:55:38,506 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 43 [2021-12-22 13:55:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:38,506 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2021-12-22 13:55:38,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2021-12-22 13:55:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:38,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:38,507 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:38,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:55:38,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash -375980076, now seen corresponding path program 1 times [2021-12-22 13:55:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:38,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255782973] [2021-12-22 13:55:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:38,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:38,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255782973] [2021-12-22 13:55:38,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255782973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:38,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:38,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:55:38,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522006828] [2021-12-22 13:55:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:38,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:38,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:38,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:38,811 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:39,284 INFO L93 Difference]: Finished difference Result 221 states and 271 transitions. [2021-12-22 13:55:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 13:55:39,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-22 13:55:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:39,286 INFO L225 Difference]: With dead ends: 221 [2021-12-22 13:55:39,286 INFO L226 Difference]: Without dead ends: 132 [2021-12-22 13:55:39,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:39,287 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:39,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 358 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:55:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-22 13:55:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2021-12-22 13:55:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 91 states have internal predecessors, (103), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2021-12-22 13:55:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2021-12-22 13:55:39,292 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 43 [2021-12-22 13:55:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:39,292 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2021-12-22 13:55:39,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2021-12-22 13:55:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 13:55:39,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:39,293 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:39,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:55:39,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1655843754, now seen corresponding path program 1 times [2021-12-22 13:55:39,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:39,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425492676] [2021-12-22 13:55:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:39,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:39,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:39,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425492676] [2021-12-22 13:55:39,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425492676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:39,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:39,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:55:39,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941605042] [2021-12-22 13:55:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:39,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:39,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:39,541 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:39,927 INFO L93 Difference]: Finished difference Result 227 states and 280 transitions. [2021-12-22 13:55:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:39,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-22 13:55:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:39,928 INFO L225 Difference]: With dead ends: 227 [2021-12-22 13:55:39,928 INFO L226 Difference]: Without dead ends: 140 [2021-12-22 13:55:39,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:39,929 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 113 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:39,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 302 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:55:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-22 13:55:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 122. [2021-12-22 13:55:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 98 states have internal predecessors, (110), 17 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-22 13:55:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2021-12-22 13:55:39,939 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 43 [2021-12-22 13:55:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:39,939 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2021-12-22 13:55:39,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2021-12-22 13:55:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 13:55:39,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:39,940 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:39,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:55:39,941 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1365554723, now seen corresponding path program 1 times [2021-12-22 13:55:39,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:39,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107694729] [2021-12-22 13:55:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:39,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:40,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:40,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107694729] [2021-12-22 13:55:40,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107694729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:40,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:40,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:55:40,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753615391] [2021-12-22 13:55:40,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:40,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:55:40,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:55:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:55:40,104 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:40,247 INFO L93 Difference]: Finished difference Result 217 states and 267 transitions. [2021-12-22 13:55:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:55:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2021-12-22 13:55:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:40,251 INFO L225 Difference]: With dead ends: 217 [2021-12-22 13:55:40,251 INFO L226 Difference]: Without dead ends: 121 [2021-12-22 13:55:40,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:55:40,252 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 43 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:40,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 193 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-22 13:55:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 107. [2021-12-22 13:55:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 83 states have internal predecessors, (93), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2021-12-22 13:55:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2021-12-22 13:55:40,256 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 45 [2021-12-22 13:55:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:40,257 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2021-12-22 13:55:40,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2021-12-22 13:55:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 13:55:40,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:40,257 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:40,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:55:40,257 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2043381215, now seen corresponding path program 1 times [2021-12-22 13:55:40,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:40,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058032810] [2021-12-22 13:55:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:40,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:40,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:40,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058032810] [2021-12-22 13:55:40,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058032810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:40,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:40,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 13:55:40,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132484036] [2021-12-22 13:55:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:40,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:55:40,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:55:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:55:40,411 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:40,612 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2021-12-22 13:55:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 13:55:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2021-12-22 13:55:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:40,614 INFO L225 Difference]: With dead ends: 129 [2021-12-22 13:55:40,614 INFO L226 Difference]: Without dead ends: 127 [2021-12-22 13:55:40,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:55:40,615 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 64 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:40,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 471 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-22 13:55:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-12-22 13:55:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 85 states have internal predecessors, (95), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2021-12-22 13:55:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-12-22 13:55:40,620 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 45 [2021-12-22 13:55:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:40,620 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-12-22 13:55:40,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 13:55:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-12-22 13:55:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 13:55:40,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:40,621 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:40,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:55:40,621 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:40,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1342316637, now seen corresponding path program 1 times [2021-12-22 13:55:40,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220864426] [2021-12-22 13:55:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:40,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:41,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:41,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220864426] [2021-12-22 13:55:41,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220864426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:41,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:41,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-22 13:55:41,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313040986] [2021-12-22 13:55:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:41,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-22 13:55:41,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-22 13:55:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:55:41,068 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 20 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 13:55:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:41,811 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2021-12-22 13:55:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:55:41,811 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2021-12-22 13:55:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:41,812 INFO L225 Difference]: With dead ends: 131 [2021-12-22 13:55:41,812 INFO L226 Difference]: Without dead ends: 129 [2021-12-22 13:55:41,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2021-12-22 13:55:41,813 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 92 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:41,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 623 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:55:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-22 13:55:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 109. [2021-12-22 13:55:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 85 states have internal predecessors, (95), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2021-12-22 13:55:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-12-22 13:55:41,818 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 45 [2021-12-22 13:55:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:41,819 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-12-22 13:55:41,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 13:55:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-12-22 13:55:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 13:55:41,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:41,819 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:41,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:55:41,819 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1476330143, now seen corresponding path program 1 times [2021-12-22 13:55:41,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:41,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379563149] [2021-12-22 13:55:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:41,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:55:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 13:55:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:42,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:42,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379563149] [2021-12-22 13:55:42,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379563149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:42,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:42,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:55:42,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275497983] [2021-12-22 13:55:42,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:42,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:55:42,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:55:42,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:55:42,020 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:42,332 INFO L93 Difference]: Finished difference Result 206 states and 248 transitions. [2021-12-22 13:55:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:55:42,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2021-12-22 13:55:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:42,333 INFO L225 Difference]: With dead ends: 206 [2021-12-22 13:55:42,333 INFO L226 Difference]: Without dead ends: 123 [2021-12-22 13:55:42,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:55:42,334 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 55 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:42,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 250 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-22 13:55:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2021-12-22 13:55:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 85 states have internal predecessors, (95), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-22 13:55:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2021-12-22 13:55:42,339 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 45 [2021-12-22 13:55:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:42,339 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2021-12-22 13:55:42,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 13:55:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2021-12-22 13:55:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 13:55:42,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:42,340 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:42,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:55:42,340 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash 316076503, now seen corresponding path program 1 times [2021-12-22 13:55:42,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:42,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214651773] [2021-12-22 13:55:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:42,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-22 13:55:42,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:42,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214651773] [2021-12-22 13:55:42,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214651773] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:42,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924718205] [2021-12-22 13:55:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:42,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:42,518 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) [2021-12-22 13:55:42,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:55:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:42,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 13:55:42,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 13:55:42,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:42,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924718205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:42,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:42,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-22 13:55:42,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135072898] [2021-12-22 13:55:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:42,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:55:42,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:55:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:42,966 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 13:55:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:42,997 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2021-12-22 13:55:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:55:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2021-12-22 13:55:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:42,998 INFO L225 Difference]: With dead ends: 201 [2021-12-22 13:55:42,998 INFO L226 Difference]: Without dead ends: 114 [2021-12-22 13:55:42,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:55:42,999 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 20 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:42,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 244 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:55:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-22 13:55:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-12-22 13:55:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 85 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-22 13:55:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2021-12-22 13:55:43,003 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 54 [2021-12-22 13:55:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:43,003 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2021-12-22 13:55:43,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 13:55:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2021-12-22 13:55:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 13:55:43,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:43,004 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:55:43,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:43,204 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,SelfDestructingSolverStorable14 [2021-12-22 13:55:43,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:43,205 INFO L85 PathProgramCache]: Analyzing trace with hash 691123421, now seen corresponding path program 1 times [2021-12-22 13:55:43,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:43,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023936619] [2021-12-22 13:55:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:43,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:55:43,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:43,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023936619] [2021-12-22 13:55:43,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023936619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:43,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:43,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:55:43,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841812343] [2021-12-22 13:55:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:43,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:55:43,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:55:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:55:43,338 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 13:55:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:43,510 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2021-12-22 13:55:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:55:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2021-12-22 13:55:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:43,511 INFO L225 Difference]: With dead ends: 140 [2021-12-22 13:55:43,511 INFO L226 Difference]: Without dead ends: 108 [2021-12-22 13:55:43,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:55:43,511 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:43,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 187 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-22 13:55:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-22 13:55:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 85 states have internal predecessors, (92), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-22 13:55:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2021-12-22 13:55:43,516 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 54 [2021-12-22 13:55:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:43,516 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2021-12-22 13:55:43,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 13:55:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2021-12-22 13:55:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-22 13:55:43,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:43,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:43,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:55:43,517 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:43,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash -324954328, now seen corresponding path program 1 times [2021-12-22 13:55:43,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:43,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245875216] [2021-12-22 13:55:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:43,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 13:55:43,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245875216] [2021-12-22 13:55:43,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245875216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:43,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:43,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:55:43,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833239815] [2021-12-22 13:55:43,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:43,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:43,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:43,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:43,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:43,681 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-22 13:55:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:43,939 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2021-12-22 13:55:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:43,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2021-12-22 13:55:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:43,941 INFO L225 Difference]: With dead ends: 116 [2021-12-22 13:55:43,941 INFO L226 Difference]: Without dead ends: 114 [2021-12-22 13:55:43,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:43,941 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 92 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:43,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 355 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-22 13:55:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2021-12-22 13:55:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.130952380952381) internal successors, (95), 88 states have internal predecessors, (95), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2021-12-22 13:55:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2021-12-22 13:55:43,946 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 60 [2021-12-22 13:55:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:43,946 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2021-12-22 13:55:43,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-22 13:55:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2021-12-22 13:55:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 13:55:43,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:43,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-12-22 13:55:43,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 13:55:43,947 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2057101486, now seen corresponding path program 1 times [2021-12-22 13:55:43,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:43,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427619329] [2021-12-22 13:55:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:43,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:55:44,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:44,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427619329] [2021-12-22 13:55:44,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427619329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:44,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:44,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:55:44,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252265721] [2021-12-22 13:55:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:44,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:55:44,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:55:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:55:44,332 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-22 13:55:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:44,855 INFO L93 Difference]: Finished difference Result 173 states and 211 transitions. [2021-12-22 13:55:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:55:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 64 [2021-12-22 13:55:44,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:44,857 INFO L225 Difference]: With dead ends: 173 [2021-12-22 13:55:44,857 INFO L226 Difference]: Without dead ends: 144 [2021-12-22 13:55:44,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:55:44,858 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 184 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:44,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 296 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:55:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-22 13:55:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2021-12-22 13:55:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.1170212765957446) internal successors, (105), 99 states have internal predecessors, (105), 19 states have call successors, (19), 9 states have call predecessors, (19), 13 states have return successors, (28), 18 states have call predecessors, (28), 18 states have call successors, (28) [2021-12-22 13:55:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2021-12-22 13:55:44,869 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 64 [2021-12-22 13:55:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2021-12-22 13:55:44,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-22 13:55:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2021-12-22 13:55:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 13:55:44,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:44,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-12-22 13:55:44,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 13:55:44,870 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 777237808, now seen corresponding path program 1 times [2021-12-22 13:55:44,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:44,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7039822] [2021-12-22 13:55:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:44,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 13:55:45,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:45,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7039822] [2021-12-22 13:55:45,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7039822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:45,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377917600] [2021-12-22 13:55:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:45,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:45,265 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) [2021-12-22 13:55:45,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:55:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-22 13:55:45,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:45,758 INFO L353 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-12-22 13:55:45,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2021-12-22 13:55:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:46,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:46,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377917600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:46,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:46,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 29 [2021-12-22 13:55:46,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722424795] [2021-12-22 13:55:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:46,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 13:55:46,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 13:55:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2021-12-22 13:55:46,517 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:46,697 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2021-12-22 13:55:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:55:46,697 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2021-12-22 13:55:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:46,698 INFO L225 Difference]: With dead ends: 204 [2021-12-22 13:55:46,698 INFO L226 Difference]: Without dead ends: 163 [2021-12-22 13:55:46,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2021-12-22 13:55:46,699 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 30 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:46,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 716 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2021-12-22 13:55:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-22 13:55:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2021-12-22 13:55:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 114 states have (on average 1.131578947368421) internal successors, (129), 119 states have internal predecessors, (129), 21 states have call successors, (21), 11 states have call predecessors, (21), 16 states have return successors, (34), 21 states have call predecessors, (34), 20 states have call successors, (34) [2021-12-22 13:55:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 184 transitions. [2021-12-22 13:55:46,706 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 184 transitions. Word has length 64 [2021-12-22 13:55:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:46,706 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 184 transitions. [2021-12-22 13:55:46,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 184 transitions. [2021-12-22 13:55:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 13:55:46,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:46,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-12-22 13:55:46,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:46,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:46,927 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1069275532, now seen corresponding path program 1 times [2021-12-22 13:55:46,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:46,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896271727] [2021-12-22 13:55:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:46,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 13:55:47,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896271727] [2021-12-22 13:55:47,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896271727] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585194147] [2021-12-22 13:55:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:47,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:47,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:47,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:55:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-22 13:55:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:47,768 INFO L353 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-12-22 13:55:47,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2021-12-22 13:55:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:48,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:48,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585194147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:48,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:48,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 30 [2021-12-22 13:55:48,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313440339] [2021-12-22 13:55:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:48,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 13:55:48,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 13:55:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2021-12-22 13:55:48,686 INFO L87 Difference]: Start difference. First operand 152 states and 184 transitions. Second operand has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:48,789 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2021-12-22 13:55:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 13:55:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2021-12-22 13:55:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:48,790 INFO L225 Difference]: With dead ends: 212 [2021-12-22 13:55:48,790 INFO L226 Difference]: Without dead ends: 170 [2021-12-22 13:55:48,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-12-22 13:55:48,791 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 33 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:48,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1040 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 201 Unchecked, 0.0s Time] [2021-12-22 13:55:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-22 13:55:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2021-12-22 13:55:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.1317829457364341) internal successors, (146), 134 states have internal predecessors, (146), 21 states have call successors, (21), 12 states have call predecessors, (21), 17 states have return successors, (34), 21 states have call predecessors, (34), 20 states have call successors, (34) [2021-12-22 13:55:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 201 transitions. [2021-12-22 13:55:48,799 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 201 transitions. Word has length 64 [2021-12-22 13:55:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:48,800 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 201 transitions. [2021-12-22 13:55:48,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 201 transitions. [2021-12-22 13:55:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 13:55:48,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:48,801 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:48,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:49,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:49,016 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -418268106, now seen corresponding path program 1 times [2021-12-22 13:55:49,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137311104] [2021-12-22 13:55:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:49,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 13:55:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-22 13:55:49,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:49,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137311104] [2021-12-22 13:55:49,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137311104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:49,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:49,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:55:49,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109500305] [2021-12-22 13:55:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:49,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:55:49,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:55:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:55:49,374 INFO L87 Difference]: Start difference. First operand 168 states and 201 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 9 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-22 13:55:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:49,950 INFO L93 Difference]: Finished difference Result 191 states and 231 transitions. [2021-12-22 13:55:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:55:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 9 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 66 [2021-12-22 13:55:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:49,951 INFO L225 Difference]: With dead ends: 191 [2021-12-22 13:55:49,951 INFO L226 Difference]: Without dead ends: 189 [2021-12-22 13:55:49,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:55:49,952 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 87 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:49,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 310 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:55:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-22 13:55:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2021-12-22 13:55:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 138 states have internal predecessors, (150), 24 states have call successors, (24), 13 states have call predecessors, (24), 18 states have return successors, (37), 24 states have call predecessors, (37), 23 states have call successors, (37) [2021-12-22 13:55:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2021-12-22 13:55:49,960 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 66 [2021-12-22 13:55:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:49,961 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2021-12-22 13:55:49,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 9 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-22 13:55:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2021-12-22 13:55:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 13:55:49,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:49,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-12-22 13:55:49,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 13:55:49,963 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash 820275769, now seen corresponding path program 1 times [2021-12-22 13:55:49,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:49,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518624994] [2021-12-22 13:55:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:49,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 13:55:50,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:50,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518624994] [2021-12-22 13:55:50,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518624994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:50,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:50,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 13:55:50,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051520420] [2021-12-22 13:55:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:50,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 13:55:50,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 13:55:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:55:50,166 INFO L87 Difference]: Start difference. First operand 176 states and 211 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-22 13:55:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:50,535 INFO L93 Difference]: Finished difference Result 192 states and 228 transitions. [2021-12-22 13:55:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 13:55:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-12-22 13:55:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:50,538 INFO L225 Difference]: With dead ends: 192 [2021-12-22 13:55:50,538 INFO L226 Difference]: Without dead ends: 190 [2021-12-22 13:55:50,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:55:50,541 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 61 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:50,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 454 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:55:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-22 13:55:50,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2021-12-22 13:55:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 144 states have internal predecessors, (155), 24 states have call successors, (24), 13 states have call predecessors, (24), 19 states have return successors, (38), 24 states have call predecessors, (38), 23 states have call successors, (38) [2021-12-22 13:55:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 217 transitions. [2021-12-22 13:55:50,551 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 217 transitions. Word has length 66 [2021-12-22 13:55:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:50,551 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 217 transitions. [2021-12-22 13:55:50,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-22 13:55:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 217 transitions. [2021-12-22 13:55:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 13:55:50,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:50,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-12-22 13:55:50,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 13:55:50,554 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1521340347, now seen corresponding path program 1 times [2021-12-22 13:55:50,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465871544] [2021-12-22 13:55:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:50,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:55:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 13:55:50,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465871544] [2021-12-22 13:55:50,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465871544] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417142040] [2021-12-22 13:55:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:50,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:50,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:50,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:50,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:55:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:51,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-22 13:55:51,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:51,436 INFO L353 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-12-22 13:55:51,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2021-12-22 13:55:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:52,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:52,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417142040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:52,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:52,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2021-12-22 13:55:52,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839591363] [2021-12-22 13:55:52,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:52,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:55:52,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:55:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:55:52,101 INFO L87 Difference]: Start difference. First operand 182 states and 217 transitions. Second operand has 14 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:52,207 INFO L93 Difference]: Finished difference Result 224 states and 262 transitions. [2021-12-22 13:55:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:55:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 66 [2021-12-22 13:55:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:52,209 INFO L225 Difference]: With dead ends: 224 [2021-12-22 13:55:52,209 INFO L226 Difference]: Without dead ends: 185 [2021-12-22 13:55:52,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2021-12-22 13:55:52,210 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 19 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:52,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 800 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 99 Unchecked, 0.1s Time] [2021-12-22 13:55:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-22 13:55:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2021-12-22 13:55:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 145 states have internal predecessors, (156), 24 states have call successors, (24), 13 states have call predecessors, (24), 19 states have return successors, (37), 24 states have call predecessors, (37), 23 states have call successors, (37) [2021-12-22 13:55:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2021-12-22 13:55:52,218 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 66 [2021-12-22 13:55:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:52,219 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2021-12-22 13:55:52,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2021-12-22 13:55:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 13:55:52,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:52,220 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:52,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:52,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-22 13:55:52,442 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:52,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:52,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1978442555, now seen corresponding path program 1 times [2021-12-22 13:55:52,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:52,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242988887] [2021-12-22 13:55:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:52,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:55:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:55:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 13:55:52,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242988887] [2021-12-22 13:55:52,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242988887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:52,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031834897] [2021-12-22 13:55:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:52,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:52,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:52,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:53,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 13:55:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:53,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-22 13:55:53,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:53,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:53,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:53,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:53,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-22 13:55:53,860 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 13:55:53,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-12-22 13:55:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-22 13:55:53,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:53,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031834897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:53,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:53,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 30 [2021-12-22 13:55:53,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8707913] [2021-12-22 13:55:53,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:53,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:53,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:53,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-12-22 13:55:53,901 INFO L87 Difference]: Start difference. First operand 183 states and 217 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-22 13:55:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:53,993 INFO L93 Difference]: Finished difference Result 308 states and 356 transitions. [2021-12-22 13:55:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:55:53,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 70 [2021-12-22 13:55:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:53,994 INFO L225 Difference]: With dead ends: 308 [2021-12-22 13:55:53,994 INFO L226 Difference]: Without dead ends: 191 [2021-12-22 13:55:53,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2021-12-22 13:55:53,995 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 28 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:53,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 480 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2021-12-22 13:55:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-22 13:55:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-12-22 13:55:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 147 states have (on average 1.1224489795918366) internal successors, (165), 153 states have internal predecessors, (165), 24 states have call successors, (24), 13 states have call predecessors, (24), 19 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2021-12-22 13:55:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 225 transitions. [2021-12-22 13:55:54,006 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 225 transitions. Word has length 70 [2021-12-22 13:55:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:54,006 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 225 transitions. [2021-12-22 13:55:54,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-22 13:55:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 225 transitions. [2021-12-22 13:55:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 13:55:54,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:54,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:54,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:54,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:54,224 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1584075769, now seen corresponding path program 1 times [2021-12-22 13:55:54,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706307056] [2021-12-22 13:55:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:54,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:55:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:55:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:54,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:54,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706307056] [2021-12-22 13:55:54,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706307056] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:54,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764855966] [2021-12-22 13:55:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:54,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:54,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:54,803 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:54,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 13:55:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:55,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-22 13:55:55,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:55,360 INFO L353 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-12-22 13:55:55,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2021-12-22 13:55:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:55:56,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:56,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764855966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:56,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:56,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [25] total 37 [2021-12-22 13:55:56,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206899027] [2021-12-22 13:55:56,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:56,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 13:55:56,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 13:55:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2021-12-22 13:55:56,277 INFO L87 Difference]: Start difference. First operand 191 states and 225 transitions. Second operand has 15 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:56,350 INFO L93 Difference]: Finished difference Result 278 states and 318 transitions. [2021-12-22 13:55:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:55:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 70 [2021-12-22 13:55:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:56,352 INFO L225 Difference]: With dead ends: 278 [2021-12-22 13:55:56,352 INFO L226 Difference]: Without dead ends: 227 [2021-12-22 13:55:56,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2021-12-22 13:55:56,353 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 19 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:56,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 833 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 133 Unchecked, 0.0s Time] [2021-12-22 13:55:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-22 13:55:56,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 211. [2021-12-22 13:55:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 166 states have (on average 1.1204819277108433) internal successors, (186), 171 states have internal predecessors, (186), 24 states have call successors, (24), 15 states have call predecessors, (24), 20 states have return successors, (33), 24 states have call predecessors, (33), 23 states have call successors, (33) [2021-12-22 13:55:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2021-12-22 13:55:56,361 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 70 [2021-12-22 13:55:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:56,361 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2021-12-22 13:55:56,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:55:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2021-12-22 13:55:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 13:55:56,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:56,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:56,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:56,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:56,583 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 304212091, now seen corresponding path program 1 times [2021-12-22 13:55:56,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:56,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765083534] [2021-12-22 13:55:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:56,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:55:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:55:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:55:56,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765083534] [2021-12-22 13:55:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765083534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:56,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:56,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:55:56,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004153283] [2021-12-22 13:55:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:56,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:55:56,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:55:56,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:55:56,958 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-22 13:55:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:57,572 INFO L93 Difference]: Finished difference Result 271 states and 312 transitions. [2021-12-22 13:55:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 13:55:57,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 70 [2021-12-22 13:55:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:57,574 INFO L225 Difference]: With dead ends: 271 [2021-12-22 13:55:57,574 INFO L226 Difference]: Without dead ends: 230 [2021-12-22 13:55:57,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:55:57,575 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 122 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:57,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 399 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:55:57,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-22 13:55:57,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 212. [2021-12-22 13:55:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 165 states have (on average 1.1151515151515152) internal successors, (184), 172 states have internal predecessors, (184), 24 states have call successors, (24), 15 states have call predecessors, (24), 22 states have return successors, (35), 24 states have call predecessors, (35), 23 states have call successors, (35) [2021-12-22 13:55:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 243 transitions. [2021-12-22 13:55:57,583 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 243 transitions. Word has length 70 [2021-12-22 13:55:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:57,584 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 243 transitions. [2021-12-22 13:55:57,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-22 13:55:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 243 transitions. [2021-12-22 13:55:57,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 13:55:57,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:57,585 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:57,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 13:55:57,585 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash -262437571, now seen corresponding path program 1 times [2021-12-22 13:55:57,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:57,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678723803] [2021-12-22 13:55:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:57,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:55:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:55:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 13:55:57,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678723803] [2021-12-22 13:55:57,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678723803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:57,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:57,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:55:57,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218089679] [2021-12-22 13:55:57,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:57,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:55:57,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:55:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:57,752 INFO L87 Difference]: Start difference. First operand 212 states and 243 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-22 13:55:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:57,902 INFO L93 Difference]: Finished difference Result 302 states and 341 transitions. [2021-12-22 13:55:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:55:57,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2021-12-22 13:55:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:57,903 INFO L225 Difference]: With dead ends: 302 [2021-12-22 13:55:57,903 INFO L226 Difference]: Without dead ends: 192 [2021-12-22 13:55:57,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:55:57,904 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 114 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:57,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 180 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-22 13:55:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2021-12-22 13:55:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 143 states have (on average 1.06993006993007) internal successors, (153), 147 states have internal predecessors, (153), 24 states have call successors, (24), 15 states have call predecessors, (24), 19 states have return successors, (31), 24 states have call predecessors, (31), 23 states have call successors, (31) [2021-12-22 13:55:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 208 transitions. [2021-12-22 13:55:57,913 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 208 transitions. Word has length 70 [2021-12-22 13:55:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:57,913 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 208 transitions. [2021-12-22 13:55:57,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-22 13:55:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 208 transitions. [2021-12-22 13:55:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 13:55:57,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:57,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:55:57,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 13:55:57,914 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1542301249, now seen corresponding path program 1 times [2021-12-22 13:55:57,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:57,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947224052] [2021-12-22 13:55:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:57,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:55:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:55:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:55:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 13:55:58,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:58,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947224052] [2021-12-22 13:55:58,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947224052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245007610] [2021-12-22 13:55:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:58,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:58,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:58,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 13:55:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:59,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-22 13:55:59,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:59,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:59,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:59,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:59,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-22 13:56:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:56:00,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:56:00,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245007610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:00,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:56:00,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [22] total 33 [2021-12-22 13:56:00,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298364384] [2021-12-22 13:56:00,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:00,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:56:00,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:56:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-12-22 13:56:00,068 INFO L87 Difference]: Start difference. First operand 187 states and 208 transitions. Second operand has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:56:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:00,167 INFO L93 Difference]: Finished difference Result 255 states and 287 transitions. [2021-12-22 13:56:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:56:00,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 70 [2021-12-22 13:56:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:00,170 INFO L225 Difference]: With dead ends: 255 [2021-12-22 13:56:00,170 INFO L226 Difference]: Without dead ends: 209 [2021-12-22 13:56:00,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2021-12-22 13:56:00,172 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 18 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:00,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 532 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 127 Unchecked, 0.0s Time] [2021-12-22 13:56:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-22 13:56:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 188. [2021-12-22 13:56:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 144 states have (on average 1.0555555555555556) internal successors, (152), 148 states have internal predecessors, (152), 24 states have call successors, (24), 15 states have call predecessors, (24), 19 states have return successors, (30), 24 states have call predecessors, (30), 23 states have call successors, (30) [2021-12-22 13:56:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 206 transitions. [2021-12-22 13:56:00,186 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 206 transitions. Word has length 70 [2021-12-22 13:56:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 206 transitions. [2021-12-22 13:56:00,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:56:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 206 transitions. [2021-12-22 13:56:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-22 13:56:00,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:00,204 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:00,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 13:56:00,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-22 13:56:00,405 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:00,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2083530690, now seen corresponding path program 1 times [2021-12-22 13:56:00,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:00,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574690959] [2021-12-22 13:56:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:00,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:56:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:56:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 13:56:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:56:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-22 13:56:00,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:00,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574690959] [2021-12-22 13:56:00,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574690959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:00,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:00,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:56:00,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320816789] [2021-12-22 13:56:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:00,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:56:00,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:56:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:56:00,758 INFO L87 Difference]: Start difference. First operand 188 states and 206 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-22 13:56:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:01,461 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2021-12-22 13:56:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:56:01,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 72 [2021-12-22 13:56:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:01,463 INFO L225 Difference]: With dead ends: 207 [2021-12-22 13:56:01,463 INFO L226 Difference]: Without dead ends: 205 [2021-12-22 13:56:01,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:56:01,463 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 86 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:01,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 310 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 13:56:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-22 13:56:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 194. [2021-12-22 13:56:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 148 states have (on average 1.054054054054054) internal successors, (156), 152 states have internal predecessors, (156), 25 states have call successors, (25), 16 states have call predecessors, (25), 20 states have return successors, (31), 25 states have call predecessors, (31), 24 states have call successors, (31) [2021-12-22 13:56:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 212 transitions. [2021-12-22 13:56:01,476 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 212 transitions. Word has length 72 [2021-12-22 13:56:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:01,477 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 212 transitions. [2021-12-22 13:56:01,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-22 13:56:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 212 transitions. [2021-12-22 13:56:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 13:56:01,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:01,479 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:01,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 13:56:01,479 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash 683060159, now seen corresponding path program 1 times [2021-12-22 13:56:01,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:01,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278584119] [2021-12-22 13:56:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:01,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:56:01,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:01,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278584119] [2021-12-22 13:56:01,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278584119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:01,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:01,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:56:01,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425628645] [2021-12-22 13:56:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:01,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:56:01,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:56:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:56:01,779 INFO L87 Difference]: Start difference. First operand 194 states and 212 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 13:56:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:02,538 INFO L93 Difference]: Finished difference Result 247 states and 271 transitions. [2021-12-22 13:56:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 13:56:02,539 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2021-12-22 13:56:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:02,540 INFO L225 Difference]: With dead ends: 247 [2021-12-22 13:56:02,540 INFO L226 Difference]: Without dead ends: 200 [2021-12-22 13:56:02,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:56:02,541 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 89 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:02,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 268 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 13:56:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-22 13:56:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2021-12-22 13:56:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 143 states have (on average 1.048951048951049) internal successors, (150), 147 states have internal predecessors, (150), 25 states have call successors, (25), 16 states have call predecessors, (25), 20 states have return successors, (31), 25 states have call predecessors, (31), 24 states have call successors, (31) [2021-12-22 13:56:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2021-12-22 13:56:02,559 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 70 [2021-12-22 13:56:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:02,559 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2021-12-22 13:56:02,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 13:56:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2021-12-22 13:56:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-22 13:56:02,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:02,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:02,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 13:56:02,560 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2084807610, now seen corresponding path program 1 times [2021-12-22 13:56:02,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:02,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156091476] [2021-12-22 13:56:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:02,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:56:03,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:03,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156091476] [2021-12-22 13:56:03,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156091476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:03,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:03,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-22 13:56:03,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549097283] [2021-12-22 13:56:03,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:03,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-22 13:56:03,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:03,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-22 13:56:03,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2021-12-22 13:56:03,150 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand has 22 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 16 states have internal predecessors, (54), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:56:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:04,177 INFO L93 Difference]: Finished difference Result 210 states and 229 transitions. [2021-12-22 13:56:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 13:56:04,182 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 16 states have internal predecessors, (54), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 72 [2021-12-22 13:56:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:04,186 INFO L225 Difference]: With dead ends: 210 [2021-12-22 13:56:04,186 INFO L226 Difference]: Without dead ends: 208 [2021-12-22 13:56:04,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-12-22 13:56:04,191 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 109 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:04,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 714 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 13:56:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-22 13:56:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 192. [2021-12-22 13:56:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 146 states have (on average 1.047945205479452) internal successors, (153), 150 states have internal predecessors, (153), 24 states have call successors, (24), 17 states have call predecessors, (24), 21 states have return successors, (30), 24 states have call predecessors, (30), 23 states have call successors, (30) [2021-12-22 13:56:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 207 transitions. [2021-12-22 13:56:04,204 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 207 transitions. Word has length 72 [2021-12-22 13:56:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:04,204 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 207 transitions. [2021-12-22 13:56:04,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 16 states have internal predecessors, (54), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 13:56:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 207 transitions. [2021-12-22 13:56:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-22 13:56:04,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:04,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:04,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 13:56:04,206 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1210932874, now seen corresponding path program 1 times [2021-12-22 13:56:04,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:04,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652508842] [2021-12-22 13:56:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:04,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 13:56:04,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:04,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652508842] [2021-12-22 13:56:04,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652508842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:04,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:04,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 13:56:04,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105958865] [2021-12-22 13:56:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:04,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 13:56:04,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 13:56:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:56:04,478 INFO L87 Difference]: Start difference. First operand 192 states and 207 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 13:56:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:04,893 INFO L93 Difference]: Finished difference Result 239 states and 259 transitions. [2021-12-22 13:56:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 13:56:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2021-12-22 13:56:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:04,895 INFO L225 Difference]: With dead ends: 239 [2021-12-22 13:56:04,895 INFO L226 Difference]: Without dead ends: 196 [2021-12-22 13:56:04,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:56:04,895 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 97 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:04,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 253 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:56:04,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-22 13:56:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2021-12-22 13:56:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 141 states have (on average 1.0425531914893618) internal successors, (147), 144 states have internal predecessors, (147), 23 states have call successors, (23), 17 states have call predecessors, (23), 20 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-22 13:56:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 198 transitions. [2021-12-22 13:56:04,907 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 198 transitions. Word has length 72 [2021-12-22 13:56:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:04,907 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 198 transitions. [2021-12-22 13:56:04,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 13:56:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 198 transitions. [2021-12-22 13:56:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 13:56:04,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:04,924 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:04,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 13:56:04,924 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1862370124, now seen corresponding path program 1 times [2021-12-22 13:56:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806522975] [2021-12-22 13:56:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:56:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:56:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 13:56:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:56:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-22 13:56:05,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806522975] [2021-12-22 13:56:05,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806522975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:05,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:05,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 13:56:05,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58644104] [2021-12-22 13:56:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:05,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:56:05,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:56:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:56:05,207 INFO L87 Difference]: Start difference. First operand 185 states and 198 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 13:56:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:05,524 INFO L93 Difference]: Finished difference Result 191 states and 203 transitions. [2021-12-22 13:56:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:56:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2021-12-22 13:56:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:05,525 INFO L225 Difference]: With dead ends: 191 [2021-12-22 13:56:05,526 INFO L226 Difference]: Without dead ends: 189 [2021-12-22 13:56:05,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:56:05,527 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 74 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:05,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 222 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:56:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-22 13:56:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-22 13:56:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 144 states have (on average 1.0416666666666667) internal successors, (150), 147 states have internal predecessors, (150), 23 states have call successors, (23), 18 states have call predecessors, (23), 21 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-22 13:56:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 201 transitions. [2021-12-22 13:56:05,548 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 201 transitions. Word has length 78 [2021-12-22 13:56:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:05,548 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 201 transitions. [2021-12-22 13:56:05,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 13:56:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 201 transitions. [2021-12-22 13:56:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 13:56:05,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:05,550 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:05,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 13:56:05,551 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1313070, now seen corresponding path program 1 times [2021-12-22 13:56:05,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:05,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330566342] [2021-12-22 13:56:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:05,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 13:56:05,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:05,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330566342] [2021-12-22 13:56:05,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330566342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:05,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:05,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-22 13:56:05,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36330312] [2021-12-22 13:56:05,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:05,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 13:56:05,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 13:56:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:56:05,947 INFO L87 Difference]: Start difference. First operand 189 states and 201 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-22 13:56:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:06,420 INFO L93 Difference]: Finished difference Result 237 states and 255 transitions. [2021-12-22 13:56:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:56:06,421 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 78 [2021-12-22 13:56:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:06,422 INFO L225 Difference]: With dead ends: 237 [2021-12-22 13:56:06,422 INFO L226 Difference]: Without dead ends: 194 [2021-12-22 13:56:06,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-22 13:56:06,422 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 129 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:06,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 458 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:56:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-22 13:56:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 172. [2021-12-22 13:56:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 128 states have (on average 1.0390625) internal successors, (133), 131 states have internal predecessors, (133), 23 states have call successors, (23), 17 states have call predecessors, (23), 20 states have return successors, (27), 23 states have call predecessors, (27), 22 states have call successors, (27) [2021-12-22 13:56:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 183 transitions. [2021-12-22 13:56:06,433 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 183 transitions. Word has length 78 [2021-12-22 13:56:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:06,433 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 183 transitions. [2021-12-22 13:56:06,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-22 13:56:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 183 transitions. [2021-12-22 13:56:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 13:56:06,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:06,435 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:06,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 13:56:06,435 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:06,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1589660972, now seen corresponding path program 1 times [2021-12-22 13:56:06,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:06,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306841494] [2021-12-22 13:56:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:06,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-22 13:56:06,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:06,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306841494] [2021-12-22 13:56:06,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306841494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:06,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:06,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:56:06,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514180904] [2021-12-22 13:56:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:06,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:56:06,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:56:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:56:06,789 INFO L87 Difference]: Start difference. First operand 172 states and 183 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-22 13:56:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:07,365 INFO L93 Difference]: Finished difference Result 189 states and 203 transitions. [2021-12-22 13:56:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:56:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2021-12-22 13:56:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:07,366 INFO L225 Difference]: With dead ends: 189 [2021-12-22 13:56:07,366 INFO L226 Difference]: Without dead ends: 187 [2021-12-22 13:56:07,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:56:07,367 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 51 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:07,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 494 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:56:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-22 13:56:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 176. [2021-12-22 13:56:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 134 states have internal predecessors, (136), 23 states have call successors, (23), 18 states have call predecessors, (23), 21 states have return successors, (27), 23 states have call predecessors, (27), 22 states have call successors, (27) [2021-12-22 13:56:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2021-12-22 13:56:07,381 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 78 [2021-12-22 13:56:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:07,381 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2021-12-22 13:56:07,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-22 13:56:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2021-12-22 13:56:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 13:56:07,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:07,383 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:07,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 13:56:07,384 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1440681711, now seen corresponding path program 1 times [2021-12-22 13:56:07,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:07,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022418564] [2021-12-22 13:56:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:07,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 13:56:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:56:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 13:56:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:56:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:56:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:56:07,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:07,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022418564] [2021-12-22 13:56:07,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022418564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:07,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:07,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:56:07,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449572137] [2021-12-22 13:56:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:07,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:56:07,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:56:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:56:07,634 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 13:56:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:07,942 INFO L93 Difference]: Finished difference Result 200 states and 211 transitions. [2021-12-22 13:56:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:56:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 85 [2021-12-22 13:56:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:07,943 INFO L225 Difference]: With dead ends: 200 [2021-12-22 13:56:07,943 INFO L226 Difference]: Without dead ends: 84 [2021-12-22 13:56:07,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:56:07,944 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 65 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:07,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 271 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:56:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-22 13:56:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-12-22 13:56:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-22 13:56:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-12-22 13:56:07,950 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 85 [2021-12-22 13:56:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:07,950 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-12-22 13:56:07,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 13:56:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-12-22 13:56:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 13:56:07,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:07,951 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:07,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 13:56:07,952 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash 61222880, now seen corresponding path program 1 times [2021-12-22 13:56:07,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983137509] [2021-12-22 13:56:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:07,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:56:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-22 13:56:08,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983137509] [2021-12-22 13:56:08,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983137509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:08,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:08,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:56:08,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089741646] [2021-12-22 13:56:08,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:08,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:56:08,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:56:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:56:08,319 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-22 13:56:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:08,781 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2021-12-22 13:56:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:56:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 84 [2021-12-22 13:56:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:08,782 INFO L225 Difference]: With dead ends: 90 [2021-12-22 13:56:08,782 INFO L226 Difference]: Without dead ends: 88 [2021-12-22 13:56:08,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:56:08,783 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 44 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:08,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 201 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:56:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-22 13:56:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-12-22 13:56:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 62 states have internal predecessors, (62), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-22 13:56:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2021-12-22 13:56:08,789 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 84 [2021-12-22 13:56:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:08,789 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2021-12-22 13:56:08,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-22 13:56:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2021-12-22 13:56:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-22 13:56:08,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:08,790 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:08,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 13:56:08,790 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:08,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:08,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2072795247, now seen corresponding path program 1 times [2021-12-22 13:56:08,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:08,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653470756] [2021-12-22 13:56:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:08,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:56:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:56:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 13:56:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-22 13:56:09,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:09,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653470756] [2021-12-22 13:56:09,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653470756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:09,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:09,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 13:56:09,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398009220] [2021-12-22 13:56:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:09,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 13:56:09,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 13:56:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:56:09,088 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-22 13:56:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:09,618 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2021-12-22 13:56:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:56:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 97 [2021-12-22 13:56:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:09,619 INFO L225 Difference]: With dead ends: 94 [2021-12-22 13:56:09,619 INFO L226 Difference]: Without dead ends: 90 [2021-12-22 13:56:09,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:56:09,620 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 46 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:09,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 264 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:56:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-22 13:56:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-12-22 13:56:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 63 states have (on average 1.0) internal successors, (63), 63 states have internal predecessors, (63), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-22 13:56:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2021-12-22 13:56:09,625 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 97 [2021-12-22 13:56:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:09,626 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2021-12-22 13:56:09,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-22 13:56:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2021-12-22 13:56:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-22 13:56:09,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:56:09,626 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 13:56:09,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 13:56:09,627 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:56:09,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:56:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 654673100, now seen corresponding path program 1 times [2021-12-22 13:56:09,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:56:09,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518590348] [2021-12-22 13:56:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:56:09,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:56:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:56:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:56:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:56:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:56:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 13:56:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 13:56:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:56:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:56:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:56:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 13:56:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 13:56:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 13:56:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 13:56:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:56:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-22 13:56:10,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:56:10,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518590348] [2021-12-22 13:56:10,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518590348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:56:10,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:56:10,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-22 13:56:10,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355692926] [2021-12-22 13:56:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:56:10,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 13:56:10,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:56:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 13:56:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:56:10,508 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 17 states, 15 states have (on average 3.2) internal successors, (48), 12 states have internal predecessors, (48), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-22 13:56:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:56:11,018 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-12-22 13:56:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:56:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 12 states have internal predecessors, (48), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 114 [2021-12-22 13:56:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:56:11,018 INFO L225 Difference]: With dead ends: 90 [2021-12-22 13:56:11,018 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 13:56:11,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-12-22 13:56:11,019 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 68 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:56:11,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 260 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:56:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 13:56:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 13:56:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:56:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 13:56:11,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2021-12-22 13:56:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:56:11,020 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 13:56:11,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 12 states have internal predecessors, (48), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-22 13:56:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 13:56:11,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 13:56:11,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 13:56:11,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 13:56:11,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 13:56:13,705 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-12-22 13:56:13,705 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-12-22 13:56:13,705 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-12-22 13:56:13,706 INFO L861 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7375 7381) the Hoare annotation is: true [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L7377-3(line 7377) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L7377-1(line 7377) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L7377(lines 7377 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L7377-7(lines 7377 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L7377-6(lines 7377 7378) no Hoare annotation was computed. [2021-12-22 13:56:13,706 INFO L858 garLoopResultBuilder]: For program point L7377-4(lines 7377 7378) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7377-11(lines 7377 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7377-9(lines 7377 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7375 7381) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7375 7381) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7380-2(line 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7380(line 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7380-6(line 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7380-4(line 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,707 INFO L858 garLoopResultBuilder]: For program point L7380-3(line 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,708 INFO L858 garLoopResultBuilder]: For program point L7380-8(line 7380) no Hoare annotation was computed. [2021-12-22 13:56:13,708 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-22 13:56:13,709 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-22 13:56:13,709 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-22 13:56:13,709 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-22 13:56:13,709 INFO L854 garLoopResultBuilder]: At program point L8214(line 8214) the Hoare annotation is: (let ((.cse17 (select |#memory_int| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse12 (select .cse17 |aws_byte_buf_from_array_~#buf~1.offset|)) (.cse11 (select .cse17 (+ |aws_byte_buf_from_array_~#buf~1.offset| 16))) (.cse14 (+ |aws_byte_buf_from_array_~#buf~1.offset| 24)) (.cse15 (select |#memory_$Pointer$.offset| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse13 (select |#memory_$Pointer$.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse16 (+ |aws_byte_buf_from_array_~#buf~1.offset| 8))) (let ((.cse5 (select .cse13 .cse16)) (.cse1 (select .cse15 .cse16)) (.cse0 (= (select .cse15 .cse14) 0)) (.cse2 (= (select .cse13 .cse14) 0)) (.cse3 (<= .cse12 .cse11)) (.cse4 (= |aws_byte_buf_from_array_~#buf~1.offset| 0)) (.cse6 (not (= |aws_byte_buf_from_array_~#buf~1.base| 0))) (.cse7 (= |aws_byte_buf_from_array_#in~len| .cse12)) (.cse8 (<= .cse11 .cse12)) (.cse9 (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|)) (.cse10 (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) (or (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) .cse0 (= .cse1 |aws_byte_buf_from_array_#in~bytes.offset|) .cse2 (< 0 (mod |aws_byte_buf_from_array_#in~len| 18446744073709551616)) .cse3 .cse4 (= .cse5 |aws_byte_buf_from_array_#in~bytes.base|) .cse6 .cse7 .cse8 .cse9 .cse10) (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and (= .cse5 0) (= .cse1 0) .cse0 .cse2 .cse3 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 (<= (mod aws_byte_buf_from_array_~len 18446744073709551616) 0)))))) [2021-12-22 13:56:13,709 INFO L858 garLoopResultBuilder]: For program point L8214-2(line 8214) no Hoare annotation was computed. [2021-12-22 13:56:13,710 INFO L854 garLoopResultBuilder]: At program point L8214-1(line 8214) the Hoare annotation is: (let ((.cse20 (select |#memory_int| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse15 (select .cse20 |aws_byte_buf_from_array_~#buf~1.offset|)) (.cse14 (select .cse20 (+ |aws_byte_buf_from_array_~#buf~1.offset| 16))) (.cse17 (+ |aws_byte_buf_from_array_~#buf~1.offset| 24)) (.cse18 (select |#memory_$Pointer$.offset| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse16 (select |#memory_$Pointer$.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse19 (+ |aws_byte_buf_from_array_~#buf~1.offset| 8))) (let ((.cse7 (select .cse16 .cse19)) (.cse2 (select .cse18 .cse19)) (.cse0 (<= 1 |aws_byte_buf_from_array_#t~ret1053|)) (.cse1 (= (select .cse18 .cse17) 0)) (.cse3 (= (select .cse16 .cse17) 0)) (.cse4 (<= |aws_byte_buf_from_array_#t~ret1053| 1)) (.cse5 (<= .cse15 .cse14)) (.cse6 (= |aws_byte_buf_from_array_~#buf~1.offset| 0)) (.cse8 (not (= |aws_byte_buf_from_array_~#buf~1.base| 0))) (.cse9 (not (= aws_byte_buf_from_array_~bytes.base 0))) (.cse10 (= |aws_byte_buf_from_array_#in~len| .cse15)) (.cse11 (<= .cse14 .cse15)) (.cse12 (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|)) (.cse13 (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) (or (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) .cse0 .cse1 (= .cse2 |aws_byte_buf_from_array_#in~bytes.offset|) .cse3 .cse4 (< 0 (mod |aws_byte_buf_from_array_#in~len| 18446744073709551616)) .cse5 .cse6 (= .cse7 |aws_byte_buf_from_array_#in~bytes.base|) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and (= .cse7 0) (= .cse2 0) .cse0 .cse1 (<= 0 (+ |aws_byte_buf_from_array_#in~len| (* (div (* (- 1) |aws_byte_buf_from_array_#in~len|) 18446744073709551616) 18446744073709551616))) .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))))) [2021-12-22 13:56:13,711 INFO L858 garLoopResultBuilder]: For program point L8206(lines 8206 8207) no Hoare annotation was computed. [2021-12-22 13:56:13,711 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayFINAL(lines 8203 8216) no Hoare annotation was computed. [2021-12-22 13:56:13,711 INFO L858 garLoopResultBuilder]: For program point L8204-1(line 8204) no Hoare annotation was computed. [2021-12-22 13:56:13,711 INFO L854 garLoopResultBuilder]: At program point L8204(line 8204) the Hoare annotation is: (or (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) [2021-12-22 13:56:13,711 INFO L858 garLoopResultBuilder]: For program point L8206-2(lines 8206 8207) no Hoare annotation was computed. [2021-12-22 13:56:13,711 INFO L854 garLoopResultBuilder]: At program point aws_byte_buf_from_arrayENTRY(lines 8203 8216) the Hoare annotation is: (or (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) (= |aws_byte_buf_from_array_#in~bytes.base| 0)) [2021-12-22 13:56:13,711 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayEXIT(lines 8203 8216) no Hoare annotation was computed. [2021-12-22 13:56:13,711 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-22 13:56:13,712 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-22 13:56:13,712 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-22 13:56:13,712 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 13:56:13,712 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-12-22 13:56:13,712 INFO L858 garLoopResultBuilder]: For program point L8962-1(line 8962) no Hoare annotation was computed. [2021-12-22 13:56:13,712 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-12-22 13:56:13,712 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (select .cse0 .cse4)) (.cse2 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (= (select .cse2 .cse1) 0) (not (= .cse3 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse3) (= (select .cse2 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0)))) [2021-12-22 13:56:13,712 INFO L854 garLoopResultBuilder]: At program point L8971(lines 8971 8973) the Hoare annotation is: (let ((.cse10 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse11 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse9 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse12 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse9 .cse12) 0)) (.cse2 (= (select .cse11 .cse12) 0)) (.cse3 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1213#1.base| 0)) (.cse6 (= (select .cse11 .cse10) 0)) (.cse7 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1213#1.offset| 0)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse5 (select .cse9 .cse10))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse3 .cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse5) .cse6 .cse7 .cse8 (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 .cse7 .cse8 (= .cse5 0))))) [2021-12-22 13:56:13,713 INFO L858 garLoopResultBuilder]: For program point L8971-1(lines 8971 8973) no Hoare annotation was computed. [2021-12-22 13:56:13,713 INFO L854 garLoopResultBuilder]: At program point L8965(line 8965) the Hoare annotation is: (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) [2021-12-22 13:56:13,713 INFO L858 garLoopResultBuilder]: For program point L8965-1(line 8965) no Hoare annotation was computed. [2021-12-22 13:56:13,713 INFO L854 garLoopResultBuilder]: At program point L8969(line 8969) the Hoare annotation is: (let ((.cse14 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse9 (select .cse14 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse12 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse11 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse13 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse15 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse13 .cse15) 0)) (.cse2 (= (select .cse11 .cse15) 0)) (.cse3 (= (select .cse14 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse4 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse10 (select .cse13 .cse12)) (.cse5 (= (select .cse11 .cse12) 0)) (.cse6 (= .cse9 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse7 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1211#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= .cse9 (* (div .cse9 18446744073709551616) 18446744073709551616)) (= .cse10 0)) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse10) .cse5 .cse6 .cse7 .cse8 (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)))))) [2021-12-22 13:56:13,713 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-12-22 13:56:13,713 INFO L858 garLoopResultBuilder]: For program point L8969-1(line 8969) no Hoare annotation was computed. [2021-12-22 13:56:13,713 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (select .cse0 .cse4)) (.cse2 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (= (select .cse2 .cse1) 0) (not (= .cse3 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse3) (= (select .cse2 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0)))) [2021-12-22 13:56:13,714 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 13:56:13,714 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 13:56:13,715 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 13:56:13,715 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-12-22 13:56:13,715 INFO L858 garLoopResultBuilder]: For program point L8959(lines 8959 8977) no Hoare annotation was computed. [2021-12-22 13:56:13,715 INFO L861 garLoopResultBuilder]: At program point L8978(line 8978) the Hoare annotation is: true [2021-12-22 13:56:13,715 INFO L858 garLoopResultBuilder]: For program point L8974-2(lines 8974 8976) no Hoare annotation was computed. [2021-12-22 13:56:13,715 INFO L854 garLoopResultBuilder]: At program point L8970(line 8970) the Hoare annotation is: (let ((.cse12 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse13 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse14 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse11 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse15 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse10 (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616)) (.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse11 .cse15) 0)) (.cse2 (= (select .cse14 .cse15) 0)) (.cse3 (= (select .cse13 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse4 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse6 (= (select .cse14 .cse12) 0)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse7 (select .cse13 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse5 (select .cse11 .cse12)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1212#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse5) .cse6 (= .cse7 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse8 .cse9 (<= (+ .cse10 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (and (<= |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| .cse10) .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 .cse8 (<= .cse7 (* (div .cse7 18446744073709551616) 18446744073709551616)) (= .cse5 0) .cse9)))) [2021-12-22 13:56:13,715 INFO L858 garLoopResultBuilder]: For program point L8974(lines 8974 8976) no Hoare annotation was computed. [2021-12-22 13:56:13,715 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (select .cse0 .cse4)) (.cse2 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (= (select .cse2 .cse1) 0) (not (= .cse3 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse3) (= (select .cse2 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_#t~mem589#1| |ULTIMATE.start_assert_bytes_match_#t~mem588#1|) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0)))) [2021-12-22 13:56:13,716 INFO L861 garLoopResultBuilder]: At program point L8962(line 8962) the Hoare annotation is: true [2021-12-22 13:56:13,716 INFO L858 garLoopResultBuilder]: For program point L8970-1(line 8970) no Hoare annotation was computed. [2021-12-22 13:56:13,716 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (select .cse0 .cse4)) (.cse2 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (= (select .cse2 .cse1) 0) (not (= .cse3 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse3) (= (select .cse2 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0)))) [2021-12-22 13:56:13,716 INFO L854 garLoopResultBuilder]: At program point L8968(line 8968) the Hoare annotation is: (let ((.cse17 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse15 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse2 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse7 (select .cse2 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse9 (select .cse17 .cse15)) (.cse14 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (= (select .cse17 .cse16) 0)) (.cse1 (= (select .cse14 .cse16) 0)) (.cse8 (= .cse9 0)) (.cse3 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse4 (= (select .cse14 .cse15) 0)) (.cse5 (= .cse7 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse6 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0))) (or (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) .cse0 .cse1 (= (select .cse2 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse3 .cse4 .cse5 .cse6 (<= .cse7 (* (div .cse7 18446744073709551616) 18446744073709551616)) .cse8) (and .cse0 .cse1 (not .cse8) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse9) .cse4 .cse5 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_15| Int)) (let ((.cse13 (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_15|))) (let ((.cse10 (select .cse13 0)) (.cse11 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse12 (select .cse13 16))) (and (= .cse10 (select .cse11 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (= .cse10 .cse12) (= (select .cse11 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) .cse12))))) .cse6 (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)))))) [2021-12-22 13:56:13,717 INFO L854 garLoopResultBuilder]: At program point L8968-1(line 8968) the Hoare annotation is: (let ((.cse15 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse9 (select .cse15 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse13 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse12 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse14 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse14 .cse16) 0)) (.cse2 (= (select .cse12 .cse16) 0)) (.cse3 (= (select .cse15 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse4 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse10 (select .cse14 .cse13)) (.cse5 (= (select .cse12 .cse13) 0)) (.cse6 (= .cse9 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse7 (<= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1210#1| 1)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse11 (<= 1 |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1210#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= .cse9 (* (div .cse9 18446744073709551616) 18446744073709551616)) (= .cse10 0) .cse11) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse10) .cse5 .cse6 .cse7 .cse8 (<= (+ (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616) 1) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse11))))) [2021-12-22 13:56:13,717 INFO L858 garLoopResultBuilder]: For program point L8968-2(line 8968) no Hoare annotation was computed. [2021-12-22 13:56:13,717 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-12-22 13:56:13,717 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-22 13:56:13,721 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-22 13:56:13,722 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-22 13:56:13,722 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-22 13:56:13,722 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-22 13:56:13,722 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-22 13:56:13,725 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:56:13,726 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:56:13,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:56:13 BoogieIcfgContainer [2021-12-22 13:56:13,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:56:13,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:56:13,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:56:13,757 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:56:13,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:55:33" (3/4) ... [2021-12-22 13:56:13,761 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 13:56:13,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-12-22 13:56:13,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_from_array [2021-12-22 13:56:13,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-22 13:56:13,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2021-12-22 13:56:13,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-22 13:56:13,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-22 13:56:13,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 122 nodes and edges [2021-12-22 13:56:13,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 58 nodes and edges [2021-12-22 13:56:13,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-12-22 13:56:13,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-12-22 13:56:13,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-22 13:56:13,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-22 13:56:13,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 13:56:13,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 13:56:14,598 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:56:14,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:56:14,598 INFO L158 Benchmark]: Toolchain (without parser) took 44217.59ms. Allocated memory was 86.0MB in the beginning and 639.6MB in the end (delta: 553.6MB). Free memory was 49.2MB in the beginning and 437.5MB in the end (delta: -388.3MB). Peak memory consumption was 406.9MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,598 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:56:14,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1549.93ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 48.9MB in the beginning and 74.7MB in the end (delta: -25.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.18ms. Allocated memory is still 125.8MB. Free memory was 74.7MB in the beginning and 63.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,599 INFO L158 Benchmark]: Boogie Preprocessor took 82.13ms. Allocated memory is still 125.8MB. Free memory was 63.4MB in the beginning and 57.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,599 INFO L158 Benchmark]: RCFGBuilder took 968.04ms. Allocated memory was 125.8MB in the beginning and 182.5MB in the end (delta: 56.6MB). Free memory was 57.1MB in the beginning and 75.4MB in the end (delta: -18.3MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,599 INFO L158 Benchmark]: TraceAbstraction took 40598.47ms. Allocated memory was 182.5MB in the beginning and 639.6MB in the end (delta: 457.2MB). Free memory was 75.4MB in the beginning and 412.4MB in the end (delta: -336.9MB). Peak memory consumption was 326.6MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,599 INFO L158 Benchmark]: Witness Printer took 841.23ms. Allocated memory is still 639.6MB. Free memory was 412.4MB in the beginning and 437.5MB in the end (delta: -25.1MB). Peak memory consumption was 214.7MB. Max. memory is 16.1GB. [2021-12-22 13:56:14,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1549.93ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 48.9MB in the beginning and 74.7MB in the end (delta: -25.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 167.18ms. Allocated memory is still 125.8MB. Free memory was 74.7MB in the beginning and 63.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.13ms. Allocated memory is still 125.8MB. Free memory was 63.4MB in the beginning and 57.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 968.04ms. Allocated memory was 125.8MB in the beginning and 182.5MB in the end (delta: 56.6MB). Free memory was 57.1MB in the beginning and 75.4MB in the end (delta: -18.3MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * TraceAbstraction took 40598.47ms. Allocated memory was 182.5MB in the beginning and 639.6MB in the end (delta: 457.2MB). Free memory was 75.4MB in the beginning and 412.4MB in the end (delta: -336.9MB). Peak memory consumption was 326.6MB. Max. memory is 16.1GB. * Witness Printer took 841.23ms. Allocated memory is still 639.6MB. Free memory was 412.4MB in the beginning and 437.5MB in the end (delta: -25.1MB). Peak memory consumption was 214.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.5s, OverallIterations: 39, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2964 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2759 mSDsluCounter, 14719 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 770 IncrementalHoareTripleChecker+Unchecked, 11775 mSDsCounter, 1026 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14402 IncrementalHoareTripleChecker+Invalid, 16198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1026 mSolverCounterUnsat, 2944 mSDtfsCounter, 14402 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1656 GetRequests, 977 SyntacticMatches, 17 SemanticMatches, 662 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=26, InterpolantAutomatonStates: 445, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 39 MinimizatonAttempts, 376 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 288 PreInvPairs, 310 NumberOfFragments, 1649 HoareAnnotationTreeSize, 288 FomulaSimplifications, 5316 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 207892 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 2895 NumberOfCodeBlocks, 2895 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 2848 ConstructedInterpolants, 216 QuantifiedInterpolants, 18190 SizeOfPredicates, 81 NumberOfNonLiveVariables, 20017 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 47 InterpolantComputations, 39 PerfectInterpolantSequences, 868/918 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8978]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-22 13:56:14,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE