./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_init_copy_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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:31:38,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:31:38,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:31:39,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:31:39,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:31:39,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:31:39,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:31:39,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:31:39,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:31:39,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:31:39,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:31:39,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:31:39,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:31:39,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:31:39,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:31:39,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:31:39,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:31:39,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:31:39,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:31:39,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:31:39,078 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:31:39,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:31:39,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:31:39,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:31:39,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:31:39,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:31:39,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:31:39,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:31:39,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:31:39,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:31:39,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:31:39,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:31:39,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:31:39,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:31:39,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:31:39,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:31:39,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:31:39,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:31:39,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:31:39,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:31:39,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:31:39,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:31:39,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:31:39,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:31:39,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:31:39,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:31:39,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:31:39,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:31:39,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:31:39,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:31:39,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:31:39,136 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:31:39,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:31:39,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:31:39,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:31:39,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:31:39,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:31:39,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:31:39,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:31:39,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:31:39,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:31:39,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:31:39,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:31:39,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:31:39,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:31:39,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:31:39,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:31:39,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:31:39,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:31:39,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:31:39,147 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:31:39,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:31:39,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:31:39,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2022-07-21 09:31:39,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:31:39,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:31:39,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:31:39,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:31:39,472 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:31:39,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-07-21 09:31:39,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe30f0c98/e9e4f425d9ff4dbf82ea6f9f86746f56/FLAGd9ff6729d [2022-07-21 09:31:40,297 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:31:40,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-07-21 09:31:40,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe30f0c98/e9e4f425d9ff4dbf82ea6f9f86746f56/FLAGd9ff6729d [2022-07-21 09:31:40,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe30f0c98/e9e4f425d9ff4dbf82ea6f9f86746f56 [2022-07-21 09:31:40,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:31:40,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:31:40,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:31:40,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:31:40,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:31:40,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:31:40" (1/1) ... [2022-07-21 09:31:40,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2febcbdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:40, skipping insertion in model container [2022-07-21 09:31:40,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:31:40" (1/1) ... [2022-07-21 09:31:40,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:31:40,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:31:40,785 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_init_copy_harness.i[4496,4509] [2022-07-21 09:31:40,793 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_init_copy_harness.i[4556,4569] [2022-07-21 09:31:41,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,502 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,503 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,504 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,519 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,520 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:41,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:31:41,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:31:41,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:31:41,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:31:41,788 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:31:41,789 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:31:41,789 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:31:41,790 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:31:41,790 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:31:41,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:31:41,917 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:31:42,050 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,051 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:31:42,141 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:31:42,153 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_init_copy_harness.i[4496,4509] [2022-07-21 09:31:42,154 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_init_copy_harness.i[4556,4569] [2022-07-21 09:31:42,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,194 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,194 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,221 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:31:42,222 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:31:42,222 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:31:42,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:31:42,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:31:42,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:31:42,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:31:42,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:31:42,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:31:42,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:31:42,239 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:31:42,286 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,287 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:31:42,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:31:42,627 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:31:42,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42 WrapperNode [2022-07-21 09:31:42,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:31:42,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:31:42,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:31:42,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:31:42,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,847 INFO L137 Inliner]: procedures = 691, calls = 2624, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 937 [2022-07-21 09:31:42,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:31:42,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:31:42,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:31:42,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:31:42,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:31:42,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:31:42,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:31:42,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:31:42,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (1/1) ... [2022-07-21 09:31:42,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:31:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:42,989 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) [2022-07-21 09:31:43,021 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 [2022-07-21 09:31:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-21 09:31:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-21 09:31:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:31:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:31:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:31:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-21 09:31:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-21 09:31:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:31:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:31:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:31:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:31:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:31:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:31:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:31:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:31:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-21 09:31:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-21 09:31:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:31:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:31:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:31:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:31:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:31:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:31:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:31:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:31:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 09:31:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 09:31:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:31:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:31:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-21 09:31:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-21 09:31:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-21 09:31:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-21 09:31:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:31:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:31:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:31:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:31:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:31:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-21 09:31:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-21 09:31:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:31:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:31:43,361 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:31:43,365 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:31:44,508 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:31:44,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:31:44,514 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-21 09:31:44,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:31:44 BoogieIcfgContainer [2022-07-21 09:31:44,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:31:44,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:31:44,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:31:44,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:31:44,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:31:40" (1/3) ... [2022-07-21 09:31:44,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558d1a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:31:44, skipping insertion in model container [2022-07-21 09:31:44,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:31:42" (2/3) ... [2022-07-21 09:31:44,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558d1a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:31:44, skipping insertion in model container [2022-07-21 09:31:44,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:31:44" (3/3) ... [2022-07-21 09:31:44,526 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2022-07-21 09:31:44,538 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:31:44,540 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:31:44,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:31:44,609 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25726899, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e2c7bf9 [2022-07-21 09:31:44,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:31:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-21 09:31:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 09:31:44,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:44,629 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-21 09:31:44,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:44,635 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2022-07-21 09:31:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:44,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704461027] [2022-07-21 09:31:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:31:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:31:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:31:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 09:31:45,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:45,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704461027] [2022-07-21 09:31:45,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704461027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:45,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:31:45,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:31:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143293014] [2022-07-21 09:31:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:31:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:31:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:31:45,401 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 09:31:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:45,778 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2022-07-21 09:31:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:31:45,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2022-07-21 09:31:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:45,791 INFO L225 Difference]: With dead ends: 376 [2022-07-21 09:31:45,791 INFO L226 Difference]: Without dead ends: 189 [2022-07-21 09:31:45,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:31:45,809 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 76 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:45,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 294 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:31:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-21 09:31:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-07-21 09:31:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-21 09:31:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2022-07-21 09:31:45,867 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2022-07-21 09:31:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:45,867 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2022-07-21 09:31:45,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 09:31:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2022-07-21 09:31:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 09:31:45,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:45,872 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2022-07-21 09:31:45,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:31:45,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2022-07-21 09:31:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:45,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579299689] [2022-07-21 09:31:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:31:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:31:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:31:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:31:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:31:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-21 09:31:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:46,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579299689] [2022-07-21 09:31:46,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579299689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:46,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354942137] [2022-07-21 09:31:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:46,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:46,308 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) [2022-07-21 09:31:46,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:31:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:46,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:31:46,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 09:31:46,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:46,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354942137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:46,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:46,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-21 09:31:46,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965212946] [2022-07-21 09:31:46,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:46,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:31:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:31:46,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:31:46,960 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:31:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:47,026 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2022-07-21 09:31:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:31:47,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2022-07-21 09:31:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:47,035 INFO L225 Difference]: With dead ends: 248 [2022-07-21 09:31:47,036 INFO L226 Difference]: Without dead ends: 173 [2022-07-21 09:31:47,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:31:47,039 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:47,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:31:47,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-21 09:31:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-21 09:31:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-21 09:31:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-07-21 09:31:47,057 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2022-07-21 09:31:47,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:47,058 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-07-21 09:31:47,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:31:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-07-21 09:31:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 09:31:47,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:47,064 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:47,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:47,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:47,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1901749225, now seen corresponding path program 1 times [2022-07-21 09:31:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:47,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588961426] [2022-07-21 09:31:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:31:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:31:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:31:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:31:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:31:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-21 09:31:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:47,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588961426] [2022-07-21 09:31:47,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588961426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:47,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162385424] [2022-07-21 09:31:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:47,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:47,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:47,564 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) [2022-07-21 09:31:47,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:31:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 09:31:48,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 09:31:48,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:48,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162385424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:48,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:48,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2022-07-21 09:31:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133751381] [2022-07-21 09:31:48,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:48,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:31:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:31:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:31:48,141 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:31:48,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:48,326 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2022-07-21 09:31:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:31:48,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 95 [2022-07-21 09:31:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:48,329 INFO L225 Difference]: With dead ends: 249 [2022-07-21 09:31:48,329 INFO L226 Difference]: Without dead ends: 176 [2022-07-21 09:31:48,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:31:48,331 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 78 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:48,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1094 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:31:48,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-21 09:31:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-07-21 09:31:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2022-07-21 09:31:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 225 transitions. [2022-07-21 09:31:48,344 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 225 transitions. Word has length 95 [2022-07-21 09:31:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:48,344 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 225 transitions. [2022-07-21 09:31:48,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:31:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 225 transitions. [2022-07-21 09:31:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 09:31:48,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:48,347 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:48,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:48,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:31:48,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1019605314, now seen corresponding path program 1 times [2022-07-21 09:31:48,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:48,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174597373] [2022-07-21 09:31:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:48,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:31:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:31:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:31:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:31:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:31:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-21 09:31:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:48,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174597373] [2022-07-21 09:31:48,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174597373] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:48,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459878689] [2022-07-21 09:31:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:48,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:48,931 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) [2022-07-21 09:31:48,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:31:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:49,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:31:49,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 09:31:49,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:49,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459878689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:49,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:49,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-21 09:31:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981158133] [2022-07-21 09:31:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:49,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:31:49,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:31:49,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:31:49,499 INFO L87 Difference]: Start difference. First operand 176 states and 225 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:31:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:49,682 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-07-21 09:31:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:31:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2022-07-21 09:31:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:49,684 INFO L225 Difference]: With dead ends: 338 [2022-07-21 09:31:49,684 INFO L226 Difference]: Without dead ends: 176 [2022-07-21 09:31:49,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:31:49,688 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 479 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:31:49,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-21 09:31:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-07-21 09:31:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-07-21 09:31:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2022-07-21 09:31:49,712 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 101 [2022-07-21 09:31:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:49,713 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2022-07-21 09:31:49,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:31:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2022-07-21 09:31:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 09:31:49,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:49,720 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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, 1, 1] [2022-07-21 09:31:49,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:49,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:49,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2090058387, now seen corresponding path program 2 times [2022-07-21 09:31:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:49,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278775227] [2022-07-21 09:31:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:49,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:31:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:31:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:31:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:31:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:31:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:31:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:31:50,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:50,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278775227] [2022-07-21 09:31:50,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278775227] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036423818] [2022-07-21 09:31:50,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:31:50,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:50,304 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) [2022-07-21 09:31:50,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:31:50,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 09:31:50,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:31:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:31:50,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-21 09:31:50,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:50,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036423818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:50,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:50,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-21 09:31:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678419796] [2022-07-21 09:31:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:50,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:31:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:31:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:31:50,804 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 09:31:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:50,907 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2022-07-21 09:31:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:31:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2022-07-21 09:31:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:50,909 INFO L225 Difference]: With dead ends: 188 [2022-07-21 09:31:50,910 INFO L226 Difference]: Without dead ends: 186 [2022-07-21 09:31:50,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:31:50,911 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 22 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:50,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1482 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:31:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-21 09:31:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-07-21 09:31:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-07-21 09:31:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 237 transitions. [2022-07-21 09:31:50,924 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 237 transitions. Word has length 107 [2022-07-21 09:31:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:50,925 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 237 transitions. [2022-07-21 09:31:50,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 09:31:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 237 transitions. [2022-07-21 09:31:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 09:31:50,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:50,938 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:50,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:51,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1813963275, now seen corresponding path program 1 times [2022-07-21 09:31:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:51,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997099728] [2022-07-21 09:31:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:31:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:31:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:31:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:31:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:31:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:31:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:31:51,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997099728] [2022-07-21 09:31:51,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997099728] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233574730] [2022-07-21 09:31:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:51,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:51,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:51,516 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) [2022-07-21 09:31:51,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:31:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:51,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:31:52,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-21 09:31:52,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:52,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233574730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:52,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:52,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-21 09:31:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918432696] [2022-07-21 09:31:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:52,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:31:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:31:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:31:52,147 INFO L87 Difference]: Start difference. First operand 185 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 09:31:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:52,410 INFO L93 Difference]: Finished difference Result 342 states and 429 transitions. [2022-07-21 09:31:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:31:52,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2022-07-21 09:31:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:52,412 INFO L225 Difference]: With dead ends: 342 [2022-07-21 09:31:52,412 INFO L226 Difference]: Without dead ends: 182 [2022-07-21 09:31:52,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:31:52,413 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:52,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 769 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:31:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-21 09:31:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-21 09:31:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-21 09:31:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2022-07-21 09:31:52,428 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 111 [2022-07-21 09:31:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:52,429 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2022-07-21 09:31:52,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 09:31:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2022-07-21 09:31:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 09:31:52,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:52,433 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:52,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 09:31:52,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:52,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash 693216864, now seen corresponding path program 1 times [2022-07-21 09:31:52,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121667190] [2022-07-21 09:31:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:31:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:31:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:31:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:31:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:31:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:31:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:31:53,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:53,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121667190] [2022-07-21 09:31:53,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121667190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:53,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:31:53,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:31:53,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560156797] [2022-07-21 09:31:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:31:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:31:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:31:53,023 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:31:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:53,582 INFO L93 Difference]: Finished difference Result 286 states and 361 transitions. [2022-07-21 09:31:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:31:53,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-07-21 09:31:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:53,584 INFO L225 Difference]: With dead ends: 286 [2022-07-21 09:31:53,584 INFO L226 Difference]: Without dead ends: 200 [2022-07-21 09:31:53,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:31:53,585 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 166 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:53,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 427 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:31:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-21 09:31:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-07-21 09:31:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-21 09:31:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-07-21 09:31:53,597 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 117 [2022-07-21 09:31:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:53,598 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-07-21 09:31:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:31:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-07-21 09:31:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 09:31:53,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:53,600 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:31:53,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1457718631, now seen corresponding path program 1 times [2022-07-21 09:31:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:53,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875339778] [2022-07-21 09:31:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:31:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:31:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:31:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:31:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:31:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:31:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:31:53,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:53,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875339778] [2022-07-21 09:31:53,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875339778] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846575428] [2022-07-21 09:31:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:53,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:53,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:53,924 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) [2022-07-21 09:31:53,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:31:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:54,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:31:54,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 09:31:54,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:54,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846575428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:54,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:54,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-21 09:31:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062414047] [2022-07-21 09:31:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:31:54,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:31:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:31:54,503 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 09:31:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:54,704 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2022-07-21 09:31:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:31:54,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-07-21 09:31:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:54,706 INFO L225 Difference]: With dead ends: 370 [2022-07-21 09:31:54,706 INFO L226 Difference]: Without dead ends: 201 [2022-07-21 09:31:54,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:31:54,707 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 40 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:54,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-07-21 09:31:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-21 09:31:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-07-21 09:31:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-21 09:31:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2022-07-21 09:31:54,720 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 118 [2022-07-21 09:31:54,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:54,720 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2022-07-21 09:31:54,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 09:31:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2022-07-21 09:31:54,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 09:31:54,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:54,722 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:54,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:54,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1199553193, now seen corresponding path program 1 times [2022-07-21 09:31:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:54,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189292241] [2022-07-21 09:31:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:31:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:31:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:31:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:31:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:31:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:31:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:31:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:55,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189292241] [2022-07-21 09:31:55,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189292241] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:55,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744699589] [2022-07-21 09:31:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:55,303 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) [2022-07-21 09:31:55,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:31:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:55,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-21 09:31:55,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:55,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:31:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 09:31:56,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:31:56,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-21 09:31:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-21 09:31:56,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744699589] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:31:56,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:31:56,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 11] total 26 [2022-07-21 09:31:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729221672] [2022-07-21 09:31:56,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:31:56,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:31:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:31:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:31:56,881 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 26 states, 24 states have (on average 5.875) internal successors, (141), 22 states have internal predecessors, (141), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-21 09:31:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:58,775 INFO L93 Difference]: Finished difference Result 471 states and 618 transitions. [2022-07-21 09:31:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 09:31:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.875) internal successors, (141), 22 states have internal predecessors, (141), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 118 [2022-07-21 09:31:58,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:58,778 INFO L225 Difference]: With dead ends: 471 [2022-07-21 09:31:58,778 INFO L226 Difference]: Without dead ends: 309 [2022-07-21 09:31:58,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 232 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 09:31:58,780 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 253 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:58,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1223 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2190 Invalid, 0 Unknown, 340 Unchecked, 1.6s Time] [2022-07-21 09:31:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-21 09:31:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 228. [2022-07-21 09:31:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 153 states have (on average 1.1633986928104576) internal successors, (178), 157 states have internal predecessors, (178), 52 states have call successors, (52), 20 states have call predecessors, (52), 22 states have return successors, (59), 50 states have call predecessors, (59), 51 states have call successors, (59) [2022-07-21 09:31:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 289 transitions. [2022-07-21 09:31:58,798 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 289 transitions. Word has length 118 [2022-07-21 09:31:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:58,799 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 289 transitions. [2022-07-21 09:31:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.875) internal successors, (141), 22 states have internal predecessors, (141), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-21 09:31:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 289 transitions. [2022-07-21 09:31:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 09:31:58,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:58,801 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:31:58,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 09:31:59,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:59,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:59,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1264569920, now seen corresponding path program 1 times [2022-07-21 09:31:59,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:59,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580312980] [2022-07-21 09:31:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:59,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:31:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:31:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:31:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:31:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:31:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:31:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:31:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:31:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:31:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:31:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-21 09:31:59,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580312980] [2022-07-21 09:31:59,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580312980] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460322882] [2022-07-21 09:31:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:59,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:59,221 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) [2022-07-21 09:31:59,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:31:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:59,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:31:59,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-21 09:31:59,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:59,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460322882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:59,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:59,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-21 09:31:59,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675758673] [2022-07-21 09:31:59,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:59,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:31:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:59,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:31:59,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:31:59,714 INFO L87 Difference]: Start difference. First operand 228 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:31:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:59,744 INFO L93 Difference]: Finished difference Result 451 states and 576 transitions. [2022-07-21 09:31:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:31:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-07-21 09:31:59,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:59,746 INFO L225 Difference]: With dead ends: 451 [2022-07-21 09:31:59,746 INFO L226 Difference]: Without dead ends: 237 [2022-07-21 09:31:59,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:31:59,748 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 20 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 649 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 [2022-07-21 09:31:59,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:31:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-21 09:31:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2022-07-21 09:31:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 150 states have (on average 1.1533333333333333) internal successors, (173), 153 states have internal predecessors, (173), 52 states have call successors, (52), 20 states have call predecessors, (52), 21 states have return successors, (57), 50 states have call predecessors, (57), 51 states have call successors, (57) [2022-07-21 09:31:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 282 transitions. [2022-07-21 09:31:59,766 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 282 transitions. Word has length 119 [2022-07-21 09:31:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:59,767 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 282 transitions. [2022-07-21 09:31:59,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:31:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 282 transitions. [2022-07-21 09:31:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 09:31:59,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:59,769 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-07-21 09:31:59,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:59,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:31:59,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:59,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:59,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1982077188, now seen corresponding path program 2 times [2022-07-21 09:31:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:59,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558164902] [2022-07-21 09:31:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:32:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:32:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:32:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:32:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:32:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:32:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 09:32:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558164902] [2022-07-21 09:32:00,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558164902] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975153804] [2022-07-21 09:32:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:32:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:00,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:00,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:32:01,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:32:01,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:32:01,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 09:32:01,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:32:01,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:01,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975153804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:01,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:01,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-21 09:32:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154375330] [2022-07-21 09:32:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:32:01,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:32:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:32:01,312 INFO L87 Difference]: Start difference. First operand 224 states and 282 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:32:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:01,373 INFO L93 Difference]: Finished difference Result 394 states and 495 transitions. [2022-07-21 09:32:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:32:01,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-21 09:32:01,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:01,375 INFO L225 Difference]: With dead ends: 394 [2022-07-21 09:32:01,375 INFO L226 Difference]: Without dead ends: 229 [2022-07-21 09:32:01,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:32:01,376 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 10 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:01,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1317 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:32:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-21 09:32:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-07-21 09:32:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 154 states have (on average 1.1493506493506493) internal successors, (177), 158 states have internal predecessors, (177), 52 states have call successors, (52), 20 states have call predecessors, (52), 22 states have return successors, (62), 50 states have call predecessors, (62), 51 states have call successors, (62) [2022-07-21 09:32:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 291 transitions. [2022-07-21 09:32:01,391 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 291 transitions. Word has length 123 [2022-07-21 09:32:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:01,391 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 291 transitions. [2022-07-21 09:32:01,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:32:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 291 transitions. [2022-07-21 09:32:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 09:32:01,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:01,393 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:01,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:01,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:01,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1351230667, now seen corresponding path program 1 times [2022-07-21 09:32:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:01,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884489967] [2022-07-21 09:32:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:32:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:32:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:32:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:32:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 09:32:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 09:32:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 09:32:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:01,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884489967] [2022-07-21 09:32:01,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884489967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:01,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168644012] [2022-07-21 09:32:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:01,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:01,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:01,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:32:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:02,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:32:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:02,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-21 09:32:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 09:32:02,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:02,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168644012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:02,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:02,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-07-21 09:32:02,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486775065] [2022-07-21 09:32:02,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:02,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:32:02,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:32:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:32:02,908 INFO L87 Difference]: Start difference. First operand 229 states and 291 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 09:32:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:03,596 INFO L93 Difference]: Finished difference Result 524 states and 702 transitions. [2022-07-21 09:32:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:32:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 126 [2022-07-21 09:32:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:03,599 INFO L225 Difference]: With dead ends: 524 [2022-07-21 09:32:03,599 INFO L226 Difference]: Without dead ends: 347 [2022-07-21 09:32:03,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:32:03,601 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 192 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:03,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1862 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 426 Invalid, 0 Unknown, 98 Unchecked, 0.5s Time] [2022-07-21 09:32:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-21 09:32:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 267. [2022-07-21 09:32:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 182 states have (on average 1.1373626373626373) internal successors, (207), 188 states have internal predecessors, (207), 56 states have call successors, (56), 23 states have call predecessors, (56), 28 states have return successors, (79), 55 states have call predecessors, (79), 55 states have call successors, (79) [2022-07-21 09:32:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2022-07-21 09:32:03,620 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 126 [2022-07-21 09:32:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:03,621 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2022-07-21 09:32:03,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 09:32:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2022-07-21 09:32:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 09:32:03,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:03,623 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:03,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:03,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:32:03,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1989755287, now seen corresponding path program 1 times [2022-07-21 09:32:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:03,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942537684] [2022-07-21 09:32:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:32:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:32:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:32:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:32:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:32:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:32:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 09:32:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942537684] [2022-07-21 09:32:04,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942537684] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512397333] [2022-07-21 09:32:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:04,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:04,074 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:04,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:32:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:32:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-21 09:32:04,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:04,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512397333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:04,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:04,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-21 09:32:04,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552327596] [2022-07-21 09:32:04,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:04,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:32:04,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:32:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:32:04,570 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:32:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:04,603 INFO L93 Difference]: Finished difference Result 518 states and 665 transitions. [2022-07-21 09:32:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:32:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-21 09:32:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:04,606 INFO L225 Difference]: With dead ends: 518 [2022-07-21 09:32:04,606 INFO L226 Difference]: Without dead ends: 265 [2022-07-21 09:32:04,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:32:04,608 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 9 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 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 [2022-07-21 09:32:04,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:32:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-21 09:32:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2022-07-21 09:32:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 178 states have (on average 1.1292134831460674) internal successors, (201), 183 states have internal predecessors, (201), 56 states have call successors, (56), 23 states have call predecessors, (56), 27 states have return successors, (72), 55 states have call predecessors, (72), 55 states have call successors, (72) [2022-07-21 09:32:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 329 transitions. [2022-07-21 09:32:04,625 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 329 transitions. Word has length 125 [2022-07-21 09:32:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:04,626 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 329 transitions. [2022-07-21 09:32:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:32:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 329 transitions. [2022-07-21 09:32:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 09:32:04,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:04,629 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:04,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:32:04,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 44113837, now seen corresponding path program 1 times [2022-07-21 09:32:04,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:04,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191444606] [2022-07-21 09:32:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:04,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:32:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:32:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:32:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:32:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:32:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:32:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 09:32:05,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:05,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191444606] [2022-07-21 09:32:05,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191444606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:05,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069884244] [2022-07-21 09:32:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:05,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:05,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:05,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:32:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:32:05,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 09:32:05,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:05,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069884244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:05,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:05,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-21 09:32:05,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629203669] [2022-07-21 09:32:05,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:05,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:32:05,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:32:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:32:05,553 INFO L87 Difference]: Start difference. First operand 262 states and 329 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:32:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:05,582 INFO L93 Difference]: Finished difference Result 488 states and 627 transitions. [2022-07-21 09:32:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:32:05,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-21 09:32:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:05,585 INFO L225 Difference]: With dead ends: 488 [2022-07-21 09:32:05,585 INFO L226 Difference]: Without dead ends: 259 [2022-07-21 09:32:05,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:32:05,587 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 26 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:05,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 657 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:32:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-21 09:32:05,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 252. [2022-07-21 09:32:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 169 states have (on average 1.1124260355029585) internal successors, (188), 173 states have internal predecessors, (188), 56 states have call successors, (56), 23 states have call predecessors, (56), 26 states have return successors, (71), 55 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-21 09:32:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 315 transitions. [2022-07-21 09:32:05,616 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 315 transitions. Word has length 125 [2022-07-21 09:32:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:05,618 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 315 transitions. [2022-07-21 09:32:05,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:32:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 315 transitions. [2022-07-21 09:32:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 09:32:05,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:05,620 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:05,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:05,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:32:05,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -308974545, now seen corresponding path program 1 times [2022-07-21 09:32:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:05,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791199200] [2022-07-21 09:32:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:32:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:32:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:32:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:32:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:32:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:32:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 09:32:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:06,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791199200] [2022-07-21 09:32:06,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791199200] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:06,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142009141] [2022-07-21 09:32:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:06,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:06,164 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:06,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:32:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:06,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-21 09:32:06,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:06,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:32:07,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-21 09:32:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 09:32:07,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:32:07,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-21 09:32:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-21 09:32:07,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142009141] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:32:07,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:32:07,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 20 [2022-07-21 09:32:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089350234] [2022-07-21 09:32:07,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:32:07,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 09:32:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 09:32:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:32:07,387 INFO L87 Difference]: Start difference. First operand 252 states and 315 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 16 states have internal predecessors, (140), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-21 09:32:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:09,107 INFO L93 Difference]: Finished difference Result 461 states and 586 transitions. [2022-07-21 09:32:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:32:09,108 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 16 states have internal predecessors, (140), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 125 [2022-07-21 09:32:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:09,110 INFO L225 Difference]: With dead ends: 461 [2022-07-21 09:32:09,110 INFO L226 Difference]: Without dead ends: 346 [2022-07-21 09:32:09,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 252 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:32:09,111 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 219 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:09,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1336 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2044 Invalid, 0 Unknown, 326 Unchecked, 1.4s Time] [2022-07-21 09:32:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-21 09:32:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 277. [2022-07-21 09:32:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 193 states have (on average 1.1139896373056994) internal successors, (215), 197 states have internal predecessors, (215), 56 states have call successors, (56), 23 states have call predecessors, (56), 27 states have return successors, (68), 56 states have call predecessors, (68), 55 states have call successors, (68) [2022-07-21 09:32:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 339 transitions. [2022-07-21 09:32:09,129 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 339 transitions. Word has length 125 [2022-07-21 09:32:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:09,129 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 339 transitions. [2022-07-21 09:32:09,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 16 states have internal predecessors, (140), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-21 09:32:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 339 transitions. [2022-07-21 09:32:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 09:32:09,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:09,131 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:09,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:09,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 09:32:09,359 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash -564182680, now seen corresponding path program 1 times [2022-07-21 09:32:09,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:09,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269844143] [2022-07-21 09:32:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:09,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:32:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:32:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:32:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:32:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:32:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:32:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:32:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:32:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 09:32:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269844143] [2022-07-21 09:32:09,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269844143] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600236853] [2022-07-21 09:32:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:09,740 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:09,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:32:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:32:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-21 09:32:10,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:10,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600236853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:10,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:10,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-07-21 09:32:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298255193] [2022-07-21 09:32:10,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:32:10,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:10,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:32:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:32:10,370 INFO L87 Difference]: Start difference. First operand 277 states and 339 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 09:32:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:10,531 INFO L93 Difference]: Finished difference Result 544 states and 659 transitions. [2022-07-21 09:32:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:32:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-07-21 09:32:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:10,534 INFO L225 Difference]: With dead ends: 544 [2022-07-21 09:32:10,534 INFO L226 Difference]: Without dead ends: 263 [2022-07-21 09:32:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:32:10,536 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 12 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1628 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:32:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-21 09:32:10,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-07-21 09:32:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 180 states have (on average 1.1) internal successors, (198), 183 states have internal predecessors, (198), 56 states have call successors, (56), 23 states have call predecessors, (56), 26 states have return successors, (67), 56 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-21 09:32:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 321 transitions. [2022-07-21 09:32:10,551 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 321 transitions. Word has length 131 [2022-07-21 09:32:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:10,551 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 321 transitions. [2022-07-21 09:32:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 09:32:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 321 transitions. [2022-07-21 09:32:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:32:10,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:10,553 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:10,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:10,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:10,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:10,776 INFO L85 PathProgramCache]: Analyzing trace with hash 418439313, now seen corresponding path program 1 times [2022-07-21 09:32:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:10,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143422447] [2022-07-21 09:32:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:10,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:32:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:32:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:32:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:32:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:32:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:32:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:32:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 09:32:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:11,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143422447] [2022-07-21 09:32:11,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143422447] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:11,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158519547] [2022-07-21 09:32:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:11,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:11,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:11,145 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:11,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:32:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:11,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 2791 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-21 09:32:11,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:11,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:32:12,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-21 09:32:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:32:12,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:12,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158519547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:12,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:12,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-07-21 09:32:12,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775505167] [2022-07-21 09:32:12,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:12,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:32:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:12,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:32:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:32:12,098 INFO L87 Difference]: Start difference. First operand 263 states and 321 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-21 09:32:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:12,623 INFO L93 Difference]: Finished difference Result 512 states and 650 transitions. [2022-07-21 09:32:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:32:12,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 133 [2022-07-21 09:32:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:12,625 INFO L225 Difference]: With dead ends: 512 [2022-07-21 09:32:12,626 INFO L226 Difference]: Without dead ends: 334 [2022-07-21 09:32:12,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:32:12,627 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 168 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:12,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1626 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 329 Invalid, 0 Unknown, 63 Unchecked, 0.4s Time] [2022-07-21 09:32:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-21 09:32:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 269. [2022-07-21 09:32:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 185 states have (on average 1.0972972972972972) internal successors, (203), 189 states have internal predecessors, (203), 56 states have call successors, (56), 23 states have call predecessors, (56), 27 states have return successors, (72), 56 states have call predecessors, (72), 55 states have call successors, (72) [2022-07-21 09:32:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 331 transitions. [2022-07-21 09:32:12,647 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 331 transitions. Word has length 133 [2022-07-21 09:32:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:12,647 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 331 transitions. [2022-07-21 09:32:12,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-21 09:32:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 331 transitions. [2022-07-21 09:32:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:32:12,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:12,649 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:12,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:12,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 09:32:12,863 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1769824531, now seen corresponding path program 1 times [2022-07-21 09:32:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:12,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755909303] [2022-07-21 09:32:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:12,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:32:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:32:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:32:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:32:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:32:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:32:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:32:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 09:32:13,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:13,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755909303] [2022-07-21 09:32:13,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755909303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:13,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402391900] [2022-07-21 09:32:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:13,223 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:13,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:32:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-21 09:32:13,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:13,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:32:13,983 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:32:13,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 09:32:14,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:32:14,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 09:32:22,681 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:32:22,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:32:22,805 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:32:22,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:32:22,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-21 09:32:30,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-21 09:32:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 49 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 09:32:50,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:32:52,411 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1836 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1836) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-07-21 09:32:52,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402391900] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:52,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:32:52,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 27 [2022-07-21 09:32:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031958263] [2022-07-21 09:32:52,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:32:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:32:52,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:32:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=948, Unknown=3, NotChecked=62, Total=1122 [2022-07-21 09:32:52,418 INFO L87 Difference]: Start difference. First operand 269 states and 331 transitions. Second operand has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 9 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-21 09:33:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:09,093 INFO L93 Difference]: Finished difference Result 571 states and 679 transitions. [2022-07-21 09:33:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 09:33:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 9 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) Word has length 133 [2022-07-21 09:33:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:09,096 INFO L225 Difference]: With dead ends: 571 [2022-07-21 09:33:09,096 INFO L226 Difference]: Without dead ends: 374 [2022-07-21 09:33:09,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 188 SyntacticMatches, 17 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=239, Invalid=2110, Unknown=7, NotChecked=94, Total=2450 [2022-07-21 09:33:09,098 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 297 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1474 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:09,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1336 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 949 Invalid, 0 Unknown, 1474 Unchecked, 0.8s Time] [2022-07-21 09:33:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-21 09:33:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-07-21 09:33:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 243 states have (on average 1.0823045267489713) internal successors, (263), 246 states have internal predecessors, (263), 63 states have call successors, (63), 35 states have call predecessors, (63), 38 states have return successors, (79), 63 states have call predecessors, (79), 62 states have call successors, (79) [2022-07-21 09:33:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 405 transitions. [2022-07-21 09:33:09,117 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 405 transitions. Word has length 133 [2022-07-21 09:33:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:09,118 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 405 transitions. [2022-07-21 09:33:09,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 9 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-21 09:33:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 405 transitions. [2022-07-21 09:33:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 09:33:09,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:09,120 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:09,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:09,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 09:33:09,336 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1405584563, now seen corresponding path program 1 times [2022-07-21 09:33:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:09,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161598031] [2022-07-21 09:33:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:33:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:33:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:33:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:33:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:33:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:33:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:33:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 09:33:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-21 09:33:09,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:09,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161598031] [2022-07-21 09:33:09,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161598031] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:09,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354664335] [2022-07-21 09:33:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:09,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:09,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:09,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:33:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:10,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-21 09:33:10,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:10,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:33:10,481 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:33:10,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:33:10,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:33:10,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 09:33:17,012 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:33:17,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:33:17,164 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:33:17,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:33:17,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-21 09:33:19,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-21 09:33:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 59 proven. 53 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 09:33:25,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:33:26,067 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2038 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2038) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-21 09:33:26,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354664335] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:26,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:33:26,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21] total 29 [2022-07-21 09:33:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252106308] [2022-07-21 09:33:26,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:33:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 09:33:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 09:33:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1013, Unknown=3, NotChecked=64, Total=1190 [2022-07-21 09:33:26,076 INFO L87 Difference]: Start difference. First operand 345 states and 405 transitions. Second operand has 29 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-21 09:33:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:45,913 INFO L93 Difference]: Finished difference Result 657 states and 781 transitions. [2022-07-21 09:33:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:33:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 140 [2022-07-21 09:33:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:45,917 INFO L225 Difference]: With dead ends: 657 [2022-07-21 09:33:45,917 INFO L226 Difference]: Without dead ends: 454 [2022-07-21 09:33:45,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 203 SyntacticMatches, 19 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=255, Invalid=2290, Unknown=9, NotChecked=98, Total=2652 [2022-07-21 09:33:45,919 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 231 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1501 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:45,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1508 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1325 Invalid, 0 Unknown, 1501 Unchecked, 1.1s Time] [2022-07-21 09:33:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-21 09:33:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 420. [2022-07-21 09:33:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 299 states have (on average 1.080267558528428) internal successors, (323), 302 states have internal predecessors, (323), 76 states have call successors, (76), 43 states have call predecessors, (76), 44 states have return successors, (94), 74 states have call predecessors, (94), 75 states have call successors, (94) [2022-07-21 09:33:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 493 transitions. [2022-07-21 09:33:45,946 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 493 transitions. Word has length 140 [2022-07-21 09:33:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:45,947 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 493 transitions. [2022-07-21 09:33:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-21 09:33:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 493 transitions. [2022-07-21 09:33:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:33:45,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:45,949 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:45,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:46,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:46,163 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2053572832, now seen corresponding path program 1 times [2022-07-21 09:33:46,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:46,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740282508] [2022-07-21 09:33:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:46,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:33:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:33:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:33:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:33:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:33:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:33:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:33:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:33:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-21 09:33:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740282508] [2022-07-21 09:33:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740282508] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149751604] [2022-07-21 09:33:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:46,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:46,577 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:46,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 09:33:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-21 09:33:47,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:47,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:33:47,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 09:33:47,337 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:33:47,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 09:33:47,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:33:47,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 09:33:58,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:33:58,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:33:58,169 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:33:58,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:33:58,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-21 09:34:04,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-21 09:34:26,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-07-21 09:34:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 09:34:26,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:34:26,411 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2265 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2265) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-07-21 09:34:26,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149751604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:26,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:34:26,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 29 [2022-07-21 09:34:26,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756678500] [2022-07-21 09:34:26,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:34:26,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 09:34:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:26,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 09:34:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=823, Unknown=7, NotChecked=58, Total=992 [2022-07-21 09:34:26,421 INFO L87 Difference]: Start difference. First operand 420 states and 493 transitions. Second operand has 29 states, 29 states have (on average 5.275862068965517) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-07-21 09:34:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:35,561 INFO L93 Difference]: Finished difference Result 585 states and 678 transitions. [2022-07-21 09:34:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 09:34:35,561 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.275862068965517) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 141 [2022-07-21 09:34:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:35,563 INFO L225 Difference]: With dead ends: 585 [2022-07-21 09:34:35,563 INFO L226 Difference]: Without dead ends: 462 [2022-07-21 09:34:35,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 210 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=197, Invalid=1520, Unknown=9, NotChecked=80, Total=1806 [2022-07-21 09:34:35,565 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 273 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 795 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:35,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1141 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1018 Invalid, 0 Unknown, 795 Unchecked, 0.8s Time] [2022-07-21 09:34:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-21 09:34:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 406. [2022-07-21 09:34:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 291 states have (on average 1.0721649484536082) internal successors, (312), 297 states have internal predecessors, (312), 70 states have call successors, (70), 41 states have call predecessors, (70), 44 states have return successors, (78), 67 states have call predecessors, (78), 69 states have call successors, (78) [2022-07-21 09:34:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 460 transitions. [2022-07-21 09:34:35,588 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 460 transitions. Word has length 141 [2022-07-21 09:34:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 460 transitions. [2022-07-21 09:34:35,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.275862068965517) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-07-21 09:34:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 460 transitions. [2022-07-21 09:34:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-21 09:34:35,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:35,591 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:35,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 09:34:35,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:35,820 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1088816893, now seen corresponding path program 1 times [2022-07-21 09:34:35,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:35,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032349766] [2022-07-21 09:34:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:34:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:34:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:34:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:34:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:34:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:34:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:34:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:34:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:34:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:34:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 09:34:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:34:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:34:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 09:34:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:34:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:34:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 09:34:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-21 09:34:36,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:36,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032349766] [2022-07-21 09:34:36,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032349766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:34:36,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:34:36,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:34:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845511668] [2022-07-21 09:34:36,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:34:36,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:34:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:34:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:34:36,235 INFO L87 Difference]: Start difference. First operand 406 states and 460 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-21 09:34:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:37,065 INFO L93 Difference]: Finished difference Result 535 states and 616 transitions. [2022-07-21 09:34:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:34:37,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 183 [2022-07-21 09:34:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:37,068 INFO L225 Difference]: With dead ends: 535 [2022-07-21 09:34:37,068 INFO L226 Difference]: Without dead ends: 426 [2022-07-21 09:34:37,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:34:37,069 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 156 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:37,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 572 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:34:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-21 09:34:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 411. [2022-07-21 09:34:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 295 states have (on average 1.071186440677966) internal successors, (316), 301 states have internal predecessors, (316), 70 states have call successors, (70), 41 states have call predecessors, (70), 45 states have return successors, (79), 68 states have call predecessors, (79), 69 states have call successors, (79) [2022-07-21 09:34:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 465 transitions. [2022-07-21 09:34:37,092 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 465 transitions. Word has length 183 [2022-07-21 09:34:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:37,093 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 465 transitions. [2022-07-21 09:34:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-21 09:34:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 465 transitions. [2022-07-21 09:34:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-21 09:34:37,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:37,095 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:37,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 09:34:37,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash -508799490, now seen corresponding path program 1 times [2022-07-21 09:34:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918316400] [2022-07-21 09:34:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:34:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:34:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:34:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:34:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:34:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:34:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:34:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:34:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:34:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:34:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 09:34:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:34:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:34:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:34:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 09:34:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:34:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:34:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 09:34:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-21 09:34:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:37,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918316400] [2022-07-21 09:34:37,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918316400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:34:37,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:34:37,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:34:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045780521] [2022-07-21 09:34:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:34:37,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:34:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:34:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:34:37,510 INFO L87 Difference]: Start difference. First operand 411 states and 465 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 09:34:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:38,348 INFO L93 Difference]: Finished difference Result 532 states and 612 transitions. [2022-07-21 09:34:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:34:38,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 189 [2022-07-21 09:34:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:38,351 INFO L225 Difference]: With dead ends: 532 [2022-07-21 09:34:38,351 INFO L226 Difference]: Without dead ends: 407 [2022-07-21 09:34:38,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:34:38,352 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 237 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:38,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 570 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:34:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-21 09:34:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2022-07-21 09:34:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 287 states have (on average 1.0662020905923344) internal successors, (306), 293 states have internal predecessors, (306), 69 states have call successors, (69), 40 states have call predecessors, (69), 43 states have return successors, (77), 66 states have call predecessors, (77), 68 states have call successors, (77) [2022-07-21 09:34:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 452 transitions. [2022-07-21 09:34:38,373 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 452 transitions. Word has length 189 [2022-07-21 09:34:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:38,375 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 452 transitions. [2022-07-21 09:34:38,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 09:34:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 452 transitions. [2022-07-21 09:34:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-21 09:34:38,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:38,377 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:38,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 09:34:38,377 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1874827005, now seen corresponding path program 1 times [2022-07-21 09:34:38,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:38,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422008073] [2022-07-21 09:34:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:38,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:34:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:34:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:34:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:34:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:34:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:34:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 09:34:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:34:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:34:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:34:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 09:34:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:34:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:34:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 09:34:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-21 09:34:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422008073] [2022-07-21 09:34:38,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422008073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:34:38,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:34:38,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:34:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826611081] [2022-07-21 09:34:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:34:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:34:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:34:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:34:38,820 INFO L87 Difference]: Start difference. First operand 400 states and 452 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-21 09:34:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:39,570 INFO L93 Difference]: Finished difference Result 419 states and 474 transitions. [2022-07-21 09:34:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:34:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 189 [2022-07-21 09:34:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:39,572 INFO L225 Difference]: With dead ends: 419 [2022-07-21 09:34:39,572 INFO L226 Difference]: Without dead ends: 417 [2022-07-21 09:34:39,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:34:39,573 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 159 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:39,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 696 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:34:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-21 09:34:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2022-07-21 09:34:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 293 states have (on average 1.0648464163822526) internal successors, (312), 300 states have internal predecessors, (312), 70 states have call successors, (70), 41 states have call predecessors, (70), 45 states have return successors, (81), 67 states have call predecessors, (81), 69 states have call successors, (81) [2022-07-21 09:34:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2022-07-21 09:34:39,596 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 189 [2022-07-21 09:34:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:39,597 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2022-07-21 09:34:39,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-21 09:34:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2022-07-21 09:34:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 09:34:39,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:39,599 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:39,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 09:34:39,599 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1285146295, now seen corresponding path program 1 times [2022-07-21 09:34:39,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:39,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16711836] [2022-07-21 09:34:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:39,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:34:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:34:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:34:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:34:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:34:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:34:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 09:34:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:34:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:34:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:34:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 09:34:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:34:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:34:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 09:34:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-21 09:34:40,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:40,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16711836] [2022-07-21 09:34:40,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16711836] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:40,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65000421] [2022-07-21 09:34:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:40,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:40,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:34:40,288 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:34:40,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 09:34:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:40,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-21 09:34:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:34:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:34:40,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-07-21 09:34:40,935 INFO L356 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-07-21 09:34:40,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-07-21 09:34:42,059 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_1| Int)) (and (< (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9| 1) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_1| 16)) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset|))))) is different from true [2022-07-21 09:34:49,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:34:49,482 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-21 09:34:49,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2022-07-21 09:34:51,701 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset|)))) (and (not (= (mod .cse0 18446744073709551616) 0)) (< (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11| 1) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11|) (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_3| 16)) .cse0)))) is different from true [2022-07-21 09:35:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 114 proven. 9 refuted. 27 times theorem prover too weak. 164 trivial. 8 not checked. [2022-07-21 09:35:07,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:35:15,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65000421] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:15,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:35:15,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23] total 35 [2022-07-21 09:35:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575712778] [2022-07-21 09:35:15,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:35:15,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 09:35:15,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 09:35:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1819, Unknown=18, NotChecked=174, Total=2162 [2022-07-21 09:35:15,744 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand has 35 states, 34 states have (on average 4.676470588235294) internal successors, (159), 29 states have internal predecessors, (159), 14 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2022-07-21 09:35:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:37,938 INFO L93 Difference]: Finished difference Result 622 states and 717 transitions. [2022-07-21 09:35:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-21 09:35:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.676470588235294) internal successors, (159), 29 states have internal predecessors, (159), 14 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) Word has length 193 [2022-07-21 09:35:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:37,941 INFO L225 Difference]: With dead ends: 622 [2022-07-21 09:35:37,941 INFO L226 Difference]: Without dead ends: 408 [2022-07-21 09:35:37,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 55.2s TimeCoverageRelationStatistics Valid=328, Invalid=3942, Unknown=28, NotChecked=258, Total=4556 [2022-07-21 09:35:37,943 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 233 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2132 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:37,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1687 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1379 Invalid, 0 Unknown, 2132 Unchecked, 1.0s Time] [2022-07-21 09:35:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-21 09:35:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 384. [2022-07-21 09:35:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 275 states have (on average 1.0654545454545454) internal successors, (293), 280 states have internal predecessors, (293), 65 states have call successors, (65), 40 states have call predecessors, (65), 43 states have return successors, (73), 63 states have call predecessors, (73), 64 states have call successors, (73) [2022-07-21 09:35:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 431 transitions. [2022-07-21 09:35:37,969 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 431 transitions. Word has length 193 [2022-07-21 09:35:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:37,969 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 431 transitions. [2022-07-21 09:35:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.676470588235294) internal successors, (159), 29 states have internal predecessors, (159), 14 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2022-07-21 09:35:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 431 transitions. [2022-07-21 09:35:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-21 09:35:37,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:37,973 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:38,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 09:35:38,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:38,191 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:38,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:38,192 INFO L85 PathProgramCache]: Analyzing trace with hash -982458048, now seen corresponding path program 1 times [2022-07-21 09:35:38,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:38,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847163028] [2022-07-21 09:35:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:38,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:35:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:35:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:35:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:35:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:35:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 09:35:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 09:35:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:35:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:35:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:35:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 09:35:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:35:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:35:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 09:35:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-21 09:35:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:38,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847163028] [2022-07-21 09:35:38,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847163028] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:38,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912003398] [2022-07-21 09:35:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:38,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:38,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:38,988 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:35:38,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 09:35:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:39,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-21 09:35:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:39,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:35:39,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:35:40,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-21 09:35:40,537 INFO L356 Elim1Store]: treesize reduction 288, result has 17.5 percent of original size [2022-07-21 09:35:40,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 75 [2022-07-21 09:35:41,810 INFO L356 Elim1Store]: treesize reduction 50, result has 33.3 percent of original size [2022-07-21 09:35:41,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2022-07-21 09:35:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 19 proven. 277 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:35:42,890 INFO L328 TraceCheckSpWp]: Computing backward predicates...