./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_write_from_whole_cursor_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 573b81394e08ed105bd02e1947cc2abcc57eca4fad7f91bedb01680df3981d90 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:58:17,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:58:17,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:58:17,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:58:17,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:58:17,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:58:17,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:58:17,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:58:17,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:58:17,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:58:17,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:58:17,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:58:17,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:58:17,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:58:17,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:58:17,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:58:17,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:58:17,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:58:17,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:58:17,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:58:17,145 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:58:17,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:58:17,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:58:17,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:58:17,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:58:17,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:58:17,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:58:17,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:58:17,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:58:17,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:58:17,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:58:17,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:58:17,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:58:17,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:58:17,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:58:17,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:58:17,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:58:17,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:58:17,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:58:17,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:58:17,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:58:17,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:58:17,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:58:17,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:58:17,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:58:17,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:58:17,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:58:17,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:58:17,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:58:17,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:58:17,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:58:17,184 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:58:17,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:58:17,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:58:17,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:58:17,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:58:17,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:58:17,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:58:17,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:58:17,186 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:58:17,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:58:17,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:58:17,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:58:17,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:58:17,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:58:17,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:58:17,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:58:17,189 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573b81394e08ed105bd02e1947cc2abcc57eca4fad7f91bedb01680df3981d90 [2022-07-12 10:58:17,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:58:17,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:58:17,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:58:17,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:58:17,375 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:58:17,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i [2022-07-12 10:58:17,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e171b467/d23d5e3ad9ae41b183378b3c62aa2826/FLAG5bd97ab26 [2022-07-12 10:58:17,902 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:58:17,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i [2022-07-12 10:58:17,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e171b467/d23d5e3ad9ae41b183378b3c62aa2826/FLAG5bd97ab26 [2022-07-12 10:58:18,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e171b467/d23d5e3ad9ae41b183378b3c62aa2826 [2022-07-12 10:58:18,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:58:18,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:58:18,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:58:18,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:58:18,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:58:18,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:58:18" (1/1) ... [2022-07-12 10:58:18,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8bc93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:18, skipping insertion in model container [2022-07-12 10:58:18,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:58:18" (1/1) ... [2022-07-12 10:58:18,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:58:18,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:58:18,482 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_write_from_whole_cursor_harness.i[4510,4523] [2022-07-12 10:58:18,487 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_write_from_whole_cursor_harness.i[4570,4583] [2022-07-12 10:58:18,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,934 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,935 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,945 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:18,946 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,174 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:58:19,175 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:58:19,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:58:19,177 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:58:19,180 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:58:19,182 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:58:19,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:58:19,184 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:58:19,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:58:19,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:58:19,270 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:58:19,331 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,331 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:58:19,417 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:58:19,435 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_write_from_whole_cursor_harness.i[4510,4523] [2022-07-12 10:58:19,436 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_write_from_whole_cursor_harness.i[4570,4583] [2022-07-12 10:58:19,481 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,482 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,483 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,483 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,484 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,527 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:58:19,528 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:58:19,529 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:58:19,529 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:58:19,530 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:58:19,530 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:58:19,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:58:19,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:58:19,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:58:19,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:58:19,550 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:58:19,595 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,596 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:58:19,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:58:19,762 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:58:19,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19 WrapperNode [2022-07-12 10:58:19,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:58:19,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:58:19,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:58:19,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:58:19,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,909 INFO L137 Inliner]: procedures = 691, calls = 2653, calls flagged for inlining = 65, calls inlined = 12, statements flattened = 981 [2022-07-12 10:58:19,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:58:19,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:58:19,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:58:19,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:58:19,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:19,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:58:20,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:58:20,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:58:20,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:58:20,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (1/1) ... [2022-07-12 10:58:20,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:58:20,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:20,024 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) [2022-07-12 10:58:20,041 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 [2022-07-12 10:58:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:58:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:58:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-12 10:58:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-12 10:58:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:58:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:58:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:58:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:58:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:58:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:58:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:58:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:58:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-12 10:58:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-12 10:58:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:58:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:58:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:58:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:58:20,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:58:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:58:20,057 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:58:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:58:20,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:58:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:58:20,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:58:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:58:20,058 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:58:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:58:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:58:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-12 10:58:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-12 10:58:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:58:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:58:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:58:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 10:58:20,060 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 10:58:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:58:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:58:20,327 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:58:20,328 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:58:21,067 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:58:21,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:58:21,075 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:58:21,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:58:21 BoogieIcfgContainer [2022-07-12 10:58:21,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:58:21,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:58:21,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:58:21,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:58:21,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:58:18" (1/3) ... [2022-07-12 10:58:21,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c7152e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:58:21, skipping insertion in model container [2022-07-12 10:58:21,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:58:19" (2/3) ... [2022-07-12 10:58:21,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c7152e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:58:21, skipping insertion in model container [2022-07-12 10:58:21,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:58:21" (3/3) ... [2022-07-12 10:58:21,082 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_cursor_harness.i [2022-07-12 10:58:21,090 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:58:21,091 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:58:21,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:58:21,126 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@ddce106, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d9c3b3c [2022-07-12 10:58:21,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:58:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 125 states have (on average 1.256) internal successors, (157), 126 states have internal predecessors, (157), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-12 10:58:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 10:58:21,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:21,140 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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] [2022-07-12 10:58:21,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2029165682, now seen corresponding path program 1 times [2022-07-12 10:58:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:21,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057119145] [2022-07-12 10:58:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:58:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:58:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 10:58:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:58:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:58:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-07-12 10:58:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057119145] [2022-07-12 10:58:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057119145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:21,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:21,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:58:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814010773] [2022-07-12 10:58:21,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:21,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:58:21,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:58:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:58:21,823 INFO L87 Difference]: Start difference. First operand has 193 states, 125 states have (on average 1.256) internal successors, (157), 126 states have internal predecessors, (157), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:22,252 INFO L93 Difference]: Finished difference Result 394 states and 576 transitions. [2022-07-12 10:58:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:58:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 140 [2022-07-12 10:58:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:22,261 INFO L225 Difference]: With dead ends: 394 [2022-07-12 10:58:22,261 INFO L226 Difference]: Without dead ends: 199 [2022-07-12 10:58:22,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:58:22,267 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 175 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:22,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 321 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:58:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-12 10:58:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 187. [2022-07-12 10:58:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.225) internal successors, (147), 121 states have internal predecessors, (147), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-12 10:58:22,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 252 transitions. [2022-07-12 10:58:22,335 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 252 transitions. Word has length 140 [2022-07-12 10:58:22,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:22,336 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 252 transitions. [2022-07-12 10:58:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:22,336 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 252 transitions. [2022-07-12 10:58:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 10:58:22,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:22,339 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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] [2022-07-12 10:58:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:58:22,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1107040530, now seen corresponding path program 1 times [2022-07-12 10:58:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:22,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577270425] [2022-07-12 10:58:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:58:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:58:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 10:58:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:58:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:58:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 10:58:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577270425] [2022-07-12 10:58:22,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577270425] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841346773] [2022-07-12 10:58:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:22,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:22,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:22,721 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) [2022-07-12 10:58:22,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:58:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:58:23,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-12 10:58:23,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:23,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841346773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:23,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:23,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 10:58:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511004629] [2022-07-12 10:58:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:23,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:58:23,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:58:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:23,253 INFO L87 Difference]: Start difference. First operand 187 states and 252 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, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 10:58:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:23,429 INFO L93 Difference]: Finished difference Result 360 states and 490 transitions. [2022-07-12 10:58:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:58:23,429 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, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 140 [2022-07-12 10:58:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:23,431 INFO L225 Difference]: With dead ends: 360 [2022-07-12 10:58:23,431 INFO L226 Difference]: Without dead ends: 190 [2022-07-12 10:58:23,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:58:23,433 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 286 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:23,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 537 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:58:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-12 10:58:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-07-12 10:58:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 122 states have (on average 1.221311475409836) internal successors, (149), 124 states have internal predecessors, (149), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2022-07-12 10:58:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 258 transitions. [2022-07-12 10:58:23,446 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 258 transitions. Word has length 140 [2022-07-12 10:58:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:23,446 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 258 transitions. [2022-07-12 10:58:23,446 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, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 10:58:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 258 transitions. [2022-07-12 10:58:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:58:23,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:23,448 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 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] [2022-07-12 10:58:23,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:23,667 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 [2022-07-12 10:58:23,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1531130655, now seen corresponding path program 1 times [2022-07-12 10:58:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578564783] [2022-07-12 10:58:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:58:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:58:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:58:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 10:58:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:58:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-12 10:58:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:23,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578564783] [2022-07-12 10:58:23,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578564783] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:23,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31920102] [2022-07-12 10:58:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:23,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:23,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:23,904 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) [2022-07-12 10:58:23,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:58:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:58:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-12 10:58:24,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:24,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31920102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:24,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:24,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-12 10:58:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604160218] [2022-07-12 10:58:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:24,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:58:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:58:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:58:24,411 INFO L87 Difference]: Start difference. First operand 190 states and 258 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:24,435 INFO L93 Difference]: Finished difference Result 385 states and 532 transitions. [2022-07-12 10:58:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:58:24,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 146 [2022-07-12 10:58:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:24,437 INFO L225 Difference]: With dead ends: 385 [2022-07-12 10:58:24,437 INFO L226 Difference]: Without dead ends: 212 [2022-07-12 10:58:24,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:58:24,439 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 42 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:24,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 756 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:58:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-12 10:58:24,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2022-07-12 10:58:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.217741935483871) internal successors, (151), 126 states have internal predecessors, (151), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2022-07-12 10:58:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 260 transitions. [2022-07-12 10:58:24,449 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 260 transitions. Word has length 146 [2022-07-12 10:58:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:24,450 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 260 transitions. [2022-07-12 10:58:24,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 260 transitions. [2022-07-12 10:58:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:58:24,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:24,451 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 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] [2022-07-12 10:58:24,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:24,688 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 [2022-07-12 10:58:24,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 470755615, now seen corresponding path program 1 times [2022-07-12 10:58:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306609549] [2022-07-12 10:58:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:58:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:58:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:58:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 10:58:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:58:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-12 10:58:24,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306609549] [2022-07-12 10:58:24,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306609549] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256893999] [2022-07-12 10:58:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:24,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:24,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:24,905 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) [2022-07-12 10:58:24,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:58:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:58:25,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-12 10:58:25,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:25,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256893999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:25,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:25,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-12 10:58:25,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113766720] [2022-07-12 10:58:25,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:25,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:58:25,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:25,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:58:25,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:58:25,329 INFO L87 Difference]: Start difference. First operand 192 states and 260 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:25,355 INFO L93 Difference]: Finished difference Result 377 states and 519 transitions. [2022-07-12 10:58:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:58:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 146 [2022-07-12 10:58:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:25,357 INFO L225 Difference]: With dead ends: 377 [2022-07-12 10:58:25,357 INFO L226 Difference]: Without dead ends: 202 [2022-07-12 10:58:25,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:58:25,358 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 29 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:25,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 737 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:58:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-12 10:58:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2022-07-12 10:58:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 128 states have internal predecessors, (153), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2022-07-12 10:58:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2022-07-12 10:58:25,368 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 146 [2022-07-12 10:58:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:25,369 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2022-07-12 10:58:25,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2022-07-12 10:58:25,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:58:25,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:25,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 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] [2022-07-12 10:58:25,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:25,590 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 [2022-07-12 10:58:25,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1198487517, now seen corresponding path program 1 times [2022-07-12 10:58:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:25,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443816464] [2022-07-12 10:58:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:58:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:58:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:58:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 10:58:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:58:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 10:58:25,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443816464] [2022-07-12 10:58:25,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443816464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278250269] [2022-07-12 10:58:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:25,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:25,844 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) [2022-07-12 10:58:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:58:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:58:26,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 10:58:26,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:26,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278250269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:26,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:26,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 10:58:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123549449] [2022-07-12 10:58:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:58:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:58:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:58:26,372 INFO L87 Difference]: Start difference. First operand 194 states and 262 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 10:58:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:26,588 INFO L93 Difference]: Finished difference Result 354 states and 482 transitions. [2022-07-12 10:58:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:58:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 146 [2022-07-12 10:58:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:26,590 INFO L225 Difference]: With dead ends: 354 [2022-07-12 10:58:26,590 INFO L226 Difference]: Without dead ends: 197 [2022-07-12 10:58:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:58:26,591 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 274 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 732 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:58:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-12 10:58:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-07-12 10:58:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.2109375) internal successors, (155), 131 states have internal predecessors, (155), 53 states have call successors, (53), 13 states have call predecessors, (53), 15 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2022-07-12 10:58:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 265 transitions. [2022-07-12 10:58:26,600 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 265 transitions. Word has length 146 [2022-07-12 10:58:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:26,601 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 265 transitions. [2022-07-12 10:58:26,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 10:58:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 265 transitions. [2022-07-12 10:58:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-12 10:58:26,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:26,602 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:26,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:26,822 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 [2022-07-12 10:58:26,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1388146398, now seen corresponding path program 1 times [2022-07-12 10:58:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:26,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526018910] [2022-07-12 10:58:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:58:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:58:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:58:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:58:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 10:58:27,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526018910] [2022-07-12 10:58:27,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526018910] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319381692] [2022-07-12 10:58:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:27,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:27,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:27,078 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) [2022-07-12 10:58:27,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:58:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:27,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:58:27,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 10:58:27,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:27,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319381692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:27,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:27,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-12 10:58:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176013358] [2022-07-12 10:58:27,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:27,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:58:27,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:58:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:58:27,644 INFO L87 Difference]: Start difference. First operand 197 states and 265 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 10:58:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:27,824 INFO L93 Difference]: Finished difference Result 340 states and 458 transitions. [2022-07-12 10:58:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:58:27,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 148 [2022-07-12 10:58:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:27,826 INFO L225 Difference]: With dead ends: 340 [2022-07-12 10:58:27,826 INFO L226 Difference]: Without dead ends: 197 [2022-07-12 10:58:27,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:58:27,827 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 310 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:27,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 700 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:58:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-12 10:58:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-07-12 10:58:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.2109375) internal successors, (155), 131 states have internal predecessors, (155), 53 states have call successors, (53), 13 states have call predecessors, (53), 15 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2022-07-12 10:58:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 264 transitions. [2022-07-12 10:58:27,847 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 264 transitions. Word has length 148 [2022-07-12 10:58:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:27,847 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 264 transitions. [2022-07-12 10:58:27,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 10:58:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 264 transitions. [2022-07-12 10:58:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 10:58:27,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:27,849 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:27,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:28,068 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 [2022-07-12 10:58:28,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:28,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:28,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1344379913, now seen corresponding path program 2 times [2022-07-12 10:58:28,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632240096] [2022-07-12 10:58:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:28,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:58:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:58:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:58:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:58:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 10:58:28,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:28,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632240096] [2022-07-12 10:58:28,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632240096] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:28,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423849734] [2022-07-12 10:58:28,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:58:28,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:28,336 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) [2022-07-12 10:58:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:58:29,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:58:29,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:29,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 10:58:29,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 10:58:29,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:29,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423849734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:29,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:29,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2022-07-12 10:58:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038940440] [2022-07-12 10:58:29,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:29,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:58:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:29,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:58:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:58:29,802 INFO L87 Difference]: Start difference. First operand 197 states and 264 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 10:58:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:29,941 INFO L93 Difference]: Finished difference Result 332 states and 443 transitions. [2022-07-12 10:58:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:58:29,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-12 10:58:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:29,943 INFO L225 Difference]: With dead ends: 332 [2022-07-12 10:58:29,943 INFO L226 Difference]: Without dead ends: 194 [2022-07-12 10:58:29,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:58:29,944 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 110 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:29,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1420 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:58:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-12 10:58:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-07-12 10:58:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.2063492063492063) internal successors, (152), 128 states have internal predecessors, (152), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2022-07-12 10:58:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 258 transitions. [2022-07-12 10:58:29,952 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 258 transitions. Word has length 154 [2022-07-12 10:58:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:29,953 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 258 transitions. [2022-07-12 10:58:29,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 10:58:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 258 transitions. [2022-07-12 10:58:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 10:58:29,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:29,954 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:58:30,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:30,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:30,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:30,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1133729953, now seen corresponding path program 1 times [2022-07-12 10:58:30,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:30,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236620733] [2022-07-12 10:58:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:58:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:58:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:58:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:58:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:58:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:58:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-12 10:58:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236620733] [2022-07-12 10:58:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236620733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:30,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:30,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:58:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251978088] [2022-07-12 10:58:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:58:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:30,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:58:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:58:30,390 INFO L87 Difference]: Start difference. First operand 194 states and 258 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 10:58:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:30,886 INFO L93 Difference]: Finished difference Result 343 states and 453 transitions. [2022-07-12 10:58:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:58:30,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 166 [2022-07-12 10:58:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:30,888 INFO L225 Difference]: With dead ends: 343 [2022-07-12 10:58:30,888 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 10:58:30,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:58:30,889 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 193 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:30,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 567 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:58:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 10:58:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2022-07-12 10:58:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 124 states have (on average 1.2016129032258065) internal successors, (149), 125 states have internal predecessors, (149), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-12 10:58:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 254 transitions. [2022-07-12 10:58:30,897 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 254 transitions. Word has length 166 [2022-07-12 10:58:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:30,898 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 254 transitions. [2022-07-12 10:58:30,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 10:58:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 254 transitions. [2022-07-12 10:58:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 10:58:30,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:30,899 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:30,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:58:30,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1572654396, now seen corresponding path program 1 times [2022-07-12 10:58:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:30,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11836255] [2022-07-12 10:58:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:58:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:58:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:58:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:58:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 10:58:31,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:31,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11836255] [2022-07-12 10:58:31,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11836255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:31,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:31,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:58:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812376415] [2022-07-12 10:58:31,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:31,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:58:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:58:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:58:31,210 INFO L87 Difference]: Start difference. First operand 191 states and 254 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 10:58:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:31,935 INFO L93 Difference]: Finished difference Result 215 states and 285 transitions. [2022-07-12 10:58:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:58:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 168 [2022-07-12 10:58:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:31,937 INFO L225 Difference]: With dead ends: 215 [2022-07-12 10:58:31,937 INFO L226 Difference]: Without dead ends: 213 [2022-07-12 10:58:31,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:58:31,937 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 203 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:31,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 857 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 10:58:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-12 10:58:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2022-07-12 10:58:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 54 states have call successors, (54), 14 states have call predecessors, (54), 15 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2022-07-12 10:58:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 268 transitions. [2022-07-12 10:58:31,945 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 268 transitions. Word has length 168 [2022-07-12 10:58:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:31,945 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 268 transitions. [2022-07-12 10:58:31,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 10:58:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 268 transitions. [2022-07-12 10:58:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 10:58:31,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:31,946 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:31,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:58:31,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -91188272, now seen corresponding path program 1 times [2022-07-12 10:58:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:31,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752548104] [2022-07-12 10:58:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:58:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:58:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:58:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:58:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-12 10:58:32,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:32,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752548104] [2022-07-12 10:58:32,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752548104] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:32,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753318301] [2022-07-12 10:58:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:32,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:32,556 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) [2022-07-12 10:58:32,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:58:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 10:58:33,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:33,261 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 45 treesize of output 29 [2022-07-12 10:58:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-12 10:58:33,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:33,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753318301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:33,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:33,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 22 [2022-07-12 10:58:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79319869] [2022-07-12 10:58:33,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:33,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:58:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:58:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:58:33,288 INFO L87 Difference]: Start difference. First operand 200 states and 268 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 10:58:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:33,535 INFO L93 Difference]: Finished difference Result 374 states and 502 transitions. [2022-07-12 10:58:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:58:33,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 172 [2022-07-12 10:58:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:33,537 INFO L225 Difference]: With dead ends: 374 [2022-07-12 10:58:33,537 INFO L226 Difference]: Without dead ends: 214 [2022-07-12 10:58:33,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 205 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:58:33,538 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 81 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:33,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1422 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-07-12 10:58:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-12 10:58:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2022-07-12 10:58:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 138 states have (on average 1.181159420289855) internal successors, (163), 140 states have internal predecessors, (163), 55 states have call successors, (55), 15 states have call predecessors, (55), 17 states have return successors, (63), 55 states have call predecessors, (63), 54 states have call successors, (63) [2022-07-12 10:58:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 281 transitions. [2022-07-12 10:58:33,547 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 281 transitions. Word has length 172 [2022-07-12 10:58:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:33,547 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 281 transitions. [2022-07-12 10:58:33,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 10:58:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 281 transitions. [2022-07-12 10:58:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 10:58:33,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:33,549 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:33,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:33,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1122229170, now seen corresponding path program 1 times [2022-07-12 10:58:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:33,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461760324] [2022-07-12 10:58:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:58:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:58:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:58:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:33,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:58:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:58:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:58:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-12 10:58:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:34,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461760324] [2022-07-12 10:58:34,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461760324] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:34,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118178898] [2022-07-12 10:58:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:34,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:34,205 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) [2022-07-12 10:58:34,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:58:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:58:34,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:34,714 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 [2022-07-12 10:58:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-12 10:58:34,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:34,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118178898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:34,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:34,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-07-12 10:58:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416302792] [2022-07-12 10:58:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:58:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:58:34,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:58:34,906 INFO L87 Difference]: Start difference. First operand 211 states and 281 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 10:58:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:35,017 INFO L93 Difference]: Finished difference Result 420 states and 556 transitions. [2022-07-12 10:58:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:58:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 172 [2022-07-12 10:58:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:35,020 INFO L225 Difference]: With dead ends: 420 [2022-07-12 10:58:35,020 INFO L226 Difference]: Without dead ends: 222 [2022-07-12 10:58:35,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:58:35,021 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 120 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:35,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1288 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 78 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2022-07-12 10:58:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-12 10:58:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2022-07-12 10:58:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 144 states have internal predecessors, (170), 55 states have call successors, (55), 16 states have call predecessors, (55), 17 states have return successors, (62), 55 states have call predecessors, (62), 54 states have call successors, (62) [2022-07-12 10:58:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2022-07-12 10:58:35,037 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 172 [2022-07-12 10:58:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2022-07-12 10:58:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 10:58:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2022-07-12 10:58:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 10:58:35,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:35,039 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:35,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:35,239 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,SelfDestructingSolverStorable10 [2022-07-12 10:58:35,239 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1686734910, now seen corresponding path program 2 times [2022-07-12 10:58:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271668490] [2022-07-12 10:58:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:58:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:58:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:58:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:58:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:58:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 10:58:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:58:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-12 10:58:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271668490] [2022-07-12 10:58:35,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271668490] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390821698] [2022-07-12 10:58:35,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:58:35,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:35,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:35,748 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) [2022-07-12 10:58:35,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:58:36,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:58:36,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:36,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-12 10:58:36,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:37,001 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 10 treesize of output 8 [2022-07-12 10:58:37,138 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 [2022-07-12 10:58:38,326 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 36 treesize of output 34 [2022-07-12 10:58:38,330 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 [2022-07-12 10:58:38,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-07-12 10:58:38,896 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 [2022-07-12 10:58:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 10:58:39,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:39,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390821698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:39,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:39,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [17] total 37 [2022-07-12 10:58:39,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044458063] [2022-07-12 10:58:39,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:39,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 10:58:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:39,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 10:58:39,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 10:58:39,026 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 22 states, 21 states have (on average 4.476190476190476) internal successors, (94), 19 states have internal predecessors, (94), 9 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2022-07-12 10:58:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:39,297 INFO L93 Difference]: Finished difference Result 446 states and 581 transitions. [2022-07-12 10:58:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:58:39,298 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.476190476190476) internal successors, (94), 19 states have internal predecessors, (94), 9 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) Word has length 176 [2022-07-12 10:58:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:39,299 INFO L225 Difference]: With dead ends: 446 [2022-07-12 10:58:39,299 INFO L226 Difference]: Without dead ends: 285 [2022-07-12 10:58:39,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 186 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 10:58:39,301 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 79 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:39,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2515 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 272 Invalid, 0 Unknown, 348 Unchecked, 0.2s Time] [2022-07-12 10:58:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-12 10:58:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2022-07-12 10:58:39,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.1666666666666667) internal successors, (224), 196 states have internal predecessors, (224), 63 states have call successors, (63), 23 states have call predecessors, (63), 27 states have return successors, (75), 63 states have call predecessors, (75), 62 states have call successors, (75) [2022-07-12 10:58:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 362 transitions. [2022-07-12 10:58:39,316 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 362 transitions. Word has length 176 [2022-07-12 10:58:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:39,317 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 362 transitions. [2022-07-12 10:58:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.476190476190476) internal successors, (94), 19 states have internal predecessors, (94), 9 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2022-07-12 10:58:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 362 transitions. [2022-07-12 10:58:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 10:58:39,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:39,319 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:39,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:39,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:39,535 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1842715452, now seen corresponding path program 1 times [2022-07-12 10:58:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083796623] [2022-07-12 10:58:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:58:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:58:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:58:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:58:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:58:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 10:58:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:58:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-12 10:58:39,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:39,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083796623] [2022-07-12 10:58:39,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083796623] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:39,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973596556] [2022-07-12 10:58:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:39,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:39,828 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) [2022-07-12 10:58:39,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:58:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:58:40,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-12 10:58:40,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:40,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973596556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:40,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:40,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-07-12 10:58:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958235683] [2022-07-12 10:58:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:40,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:58:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:40,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:58:40,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:58:40,347 INFO L87 Difference]: Start difference. First operand 283 states and 362 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:40,502 INFO L93 Difference]: Finished difference Result 491 states and 650 transitions. [2022-07-12 10:58:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:58:40,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-12 10:58:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:40,504 INFO L225 Difference]: With dead ends: 491 [2022-07-12 10:58:40,504 INFO L226 Difference]: Without dead ends: 288 [2022-07-12 10:58:40,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:40,505 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 24 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:40,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 864 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2022-07-12 10:58:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-07-12 10:58:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 279. [2022-07-12 10:58:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 189 states have (on average 1.1587301587301588) internal successors, (219), 192 states have internal predecessors, (219), 63 states have call successors, (63), 23 states have call predecessors, (63), 26 states have return successors, (74), 63 states have call predecessors, (74), 62 states have call successors, (74) [2022-07-12 10:58:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 356 transitions. [2022-07-12 10:58:40,517 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 356 transitions. Word has length 176 [2022-07-12 10:58:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:40,517 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 356 transitions. [2022-07-12 10:58:40,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 10:58:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 356 transitions. [2022-07-12 10:58:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 10:58:40,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:40,519 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:40,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-12 10:58:40,738 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,SelfDestructingSolverStorable12 [2022-07-12 10:58:40,739 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash -701843514, now seen corresponding path program 3 times [2022-07-12 10:58:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:40,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607412047] [2022-07-12 10:58:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:40,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:58:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:58:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:58:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:58:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:58:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:58:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:58:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 10:58:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:58:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-12 10:58:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607412047] [2022-07-12 10:58:41,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607412047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960123936] [2022-07-12 10:58:41,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:58:41,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:41,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:41,062 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) [2022-07-12 10:58:41,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:58:42,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:58:42,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:42,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:58:42,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 8 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-12 10:58:42,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:42,767 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:58:42,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 10:58:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 10:58:42,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960123936] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:42,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:42,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 24 [2022-07-12 10:58:42,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818586472] [2022-07-12 10:58:42,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:58:42,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:58:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:58:42,807 INFO L87 Difference]: Start difference. First operand 279 states and 356 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 21 states have internal predecessors, (134), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2022-07-12 10:58:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:44,827 INFO L93 Difference]: Finished difference Result 539 states and 716 transitions. [2022-07-12 10:58:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:58:44,828 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 21 states have internal predecessors, (134), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 176 [2022-07-12 10:58:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:44,844 INFO L225 Difference]: With dead ends: 539 [2022-07-12 10:58:44,845 INFO L226 Difference]: Without dead ends: 297 [2022-07-12 10:58:44,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 380 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 10:58:44,856 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 359 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:44,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1546 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2862 Invalid, 0 Unknown, 503 Unchecked, 1.4s Time] [2022-07-12 10:58:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-12 10:58:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 281. [2022-07-12 10:58:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.16580310880829) internal successors, (225), 198 states have internal predecessors, (225), 61 states have call successors, (61), 21 states have call predecessors, (61), 26 states have return successors, (91), 61 states have call predecessors, (91), 60 states have call successors, (91) [2022-07-12 10:58:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 377 transitions. [2022-07-12 10:58:44,874 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 377 transitions. Word has length 176 [2022-07-12 10:58:44,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:44,876 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 377 transitions. [2022-07-12 10:58:44,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 21 states have internal predecessors, (134), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2022-07-12 10:58:44,876 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 377 transitions. [2022-07-12 10:58:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 10:58:44,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:44,880 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:44,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 10:58:45,093 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,SelfDestructingSolverStorable13 [2022-07-12 10:58:45,094 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1134555975, now seen corresponding path program 1 times [2022-07-12 10:58:45,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:45,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645579953] [2022-07-12 10:58:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:45,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:58:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:58:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:58:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:58:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:58:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:58:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-12 10:58:45,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:45,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645579953] [2022-07-12 10:58:45,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645579953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:45,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:45,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:58:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985612654] [2022-07-12 10:58:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:45,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:58:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:58:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:58:45,419 INFO L87 Difference]: Start difference. First operand 281 states and 377 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 10:58:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:46,007 INFO L93 Difference]: Finished difference Result 526 states and 729 transitions. [2022-07-12 10:58:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:58:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 178 [2022-07-12 10:58:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:46,009 INFO L225 Difference]: With dead ends: 526 [2022-07-12 10:58:46,009 INFO L226 Difference]: Without dead ends: 286 [2022-07-12 10:58:46,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:46,010 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 219 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:46,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 543 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:58:46,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-12 10:58:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 281. [2022-07-12 10:58:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.160621761658031) internal successors, (224), 198 states have internal predecessors, (224), 61 states have call successors, (61), 21 states have call predecessors, (61), 26 states have return successors, (91), 61 states have call predecessors, (91), 60 states have call successors, (91) [2022-07-12 10:58:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 376 transitions. [2022-07-12 10:58:46,039 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 376 transitions. Word has length 178 [2022-07-12 10:58:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:46,040 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 376 transitions. [2022-07-12 10:58:46,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 10:58:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 376 transitions. [2022-07-12 10:58:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 10:58:46,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:46,041 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:46,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:58:46,043 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash -876390537, now seen corresponding path program 1 times [2022-07-12 10:58:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:46,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673831731] [2022-07-12 10:58:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:58:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:58:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:58:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:58:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:58:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:58:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-12 10:58:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673831731] [2022-07-12 10:58:46,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673831731] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102586694] [2022-07-12 10:58:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:46,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:46,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:46,533 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) [2022-07-12 10:58:46,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:58:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:46,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 130 conjunts are in the unsatisfiable core [2022-07-12 10:58:46,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:46,991 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 10 treesize of output 8 [2022-07-12 10:58:47,108 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 [2022-07-12 10:58:47,780 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 23 treesize of output 22 [2022-07-12 10:58:47,787 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 19 treesize of output 21 [2022-07-12 10:58:47,791 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 [2022-07-12 10:58:48,496 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 15 treesize of output 11 [2022-07-12 10:58:48,517 INFO L356 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-07-12 10:58:48,517 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 2 case distinctions, treesize of input 30 treesize of output 41 [2022-07-12 10:58:48,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 11 [2022-07-12 10:58:48,534 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:48,534 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 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 10:58:48,540 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 10 treesize of output 9 [2022-07-12 10:58:48,548 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 10 treesize of output 6 [2022-07-12 10:58:48,561 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 15 treesize of output 11 [2022-07-12 10:58:48,569 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 7 treesize of output 3 [2022-07-12 10:58:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 103 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 10:58:51,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:51,800 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 [2022-07-12 10:58:51,814 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:58:51,814 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-07-12 10:58:51,837 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_1673 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| Int)) (not (= (mod (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| v_ArrVal_1673) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 18446744073709551616) 0))))) (and (forall ((v_ArrVal_1673 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| Int)) (or (= |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8|) (not (= (mod (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| v_ArrVal_1673) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)))) (or .cse0 (= (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|) 8)) (forall ((v_ArrVal_1673 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| Int)) (or (not (= (mod (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| v_ArrVal_1673) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)) (forall ((v_arrayElimArr_1 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_8| v_arrayElimArr_1) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 0) (not (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.offset|)) (select v_arrayElimArr_1 8))))))) (or (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.offset|)) 0) .cse0))) is different from false [2022-07-12 10:58:51,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102586694] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:51,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:51,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 28] total 43 [2022-07-12 10:58:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468973991] [2022-07-12 10:58:51,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:51,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-12 10:58:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-12 10:58:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2456, Unknown=1, NotChecked=100, Total=2756 [2022-07-12 10:58:51,875 INFO L87 Difference]: Start difference. First operand 281 states and 376 transitions. Second operand has 43 states, 41 states have (on average 4.317073170731708) internal successors, (177), 36 states have internal predecessors, (177), 14 states have call successors, (44), 11 states have call predecessors, (44), 10 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2022-07-12 10:58:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:55,853 INFO L93 Difference]: Finished difference Result 744 states and 1075 transitions. [2022-07-12 10:58:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-12 10:58:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 4.317073170731708) internal successors, (177), 36 states have internal predecessors, (177), 14 states have call successors, (44), 11 states have call predecessors, (44), 10 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) Word has length 178 [2022-07-12 10:58:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:55,858 INFO L225 Difference]: With dead ends: 744 [2022-07-12 10:58:55,858 INFO L226 Difference]: Without dead ends: 573 [2022-07-12 10:58:55,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 253 SyntacticMatches, 24 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2898 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=734, Invalid=8971, Unknown=1, NotChecked=194, Total=9900 [2022-07-12 10:58:55,861 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 561 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 7138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2463 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:55,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 2968 Invalid, 7138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 4253 Invalid, 0 Unknown, 2463 Unchecked, 2.2s Time] [2022-07-12 10:58:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-07-12 10:58:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 485. [2022-07-12 10:58:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 329 states have (on average 1.1519756838905775) internal successors, (379), 338 states have internal predecessors, (379), 110 states have call successors, (110), 34 states have call predecessors, (110), 45 states have return successors, (225), 112 states have call predecessors, (225), 109 states have call successors, (225) [2022-07-12 10:58:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 714 transitions. [2022-07-12 10:58:55,890 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 714 transitions. Word has length 178 [2022-07-12 10:58:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:55,890 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 714 transitions. [2022-07-12 10:58:55,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 4.317073170731708) internal successors, (177), 36 states have internal predecessors, (177), 14 states have call successors, (44), 11 states have call predecessors, (44), 10 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2022-07-12 10:58:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 714 transitions. [2022-07-12 10:58:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 10:58:55,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:55,892 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:55,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:56,112 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,SelfDestructingSolverStorable15 [2022-07-12 10:58:56,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash -657535819, now seen corresponding path program 1 times [2022-07-12 10:58:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:56,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711668754] [2022-07-12 10:58:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:58:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:58:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:58:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:58:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:58:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:58:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:58:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:58:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:58:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:58:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-12 10:58:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711668754] [2022-07-12 10:58:56,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711668754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:56,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619529371] [2022-07-12 10:58:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:56,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:56,680 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) [2022-07-12 10:58:56,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:58:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-12 10:58:57,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:57,161 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 10 treesize of output 8 [2022-07-12 10:58:57,297 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 [2022-07-12 10:58:57,699 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 24 treesize of output 23 [2022-07-12 10:58:57,703 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 [2022-07-12 10:58:58,176 INFO L356 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-07-12 10:58:58,176 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 31 treesize of output 46 [2022-07-12 10:58:58,181 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 15 treesize of output 11 [2022-07-12 10:58:58,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 11 [2022-07-12 10:58:58,193 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 10 treesize of output 9 [2022-07-12 10:58:58,219 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 8 treesize of output 4 [2022-07-12 10:58:58,227 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 15 treesize of output 11 [2022-07-12 10:59:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 122 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:59:26,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:27,334 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:59:27,334 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-07-12 10:59:27,338 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 [2022-07-12 10:59:27,362 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_9| Int) (v_arrayElimArr_2 (Array Int Int))) (or (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.offset|)) (select v_arrayElimArr_2 8))) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_9| v_arrayElimArr_2) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 0)))))) (and (or (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.offset|)) 0) .cse0) (forall ((v_arrayElimArr_2 (Array Int Int))) (or (forall ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_9| Int)) (or (= |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_9|) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_9| v_arrayElimArr_2) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 0)))) (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.offset|)) (select v_arrayElimArr_2 8))))) (or .cse0 (= (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|) 8)))) is different from false [2022-07-12 10:59:27,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619529371] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:27,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:27,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 45 [2022-07-12 10:59:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733416152] [2022-07-12 10:59:27,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:27,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-12 10:59:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-12 10:59:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2991, Unknown=1, NotChecked=110, Total=3306 [2022-07-12 10:59:27,391 INFO L87 Difference]: Start difference. First operand 485 states and 714 transitions. Second operand has 45 states, 41 states have (on average 4.560975609756097) internal successors, (187), 37 states have internal predecessors, (187), 15 states have call successors, (44), 11 states have call predecessors, (44), 10 states have return successors, (41), 13 states have call predecessors, (41), 14 states have call successors, (41) [2022-07-12 10:59:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:33,330 INFO L93 Difference]: Finished difference Result 910 states and 1332 transitions. [2022-07-12 10:59:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:59:33,331 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 4.560975609756097) internal successors, (187), 37 states have internal predecessors, (187), 15 states have call successors, (44), 11 states have call predecessors, (44), 10 states have return successors, (41), 13 states have call predecessors, (41), 14 states have call successors, (41) Word has length 178 [2022-07-12 10:59:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:33,334 INFO L225 Difference]: With dead ends: 910 [2022-07-12 10:59:33,334 INFO L226 Difference]: Without dead ends: 754 [2022-07-12 10:59:33,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 249 SyntacticMatches, 24 SemanticMatches, 117 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3866 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=1108, Invalid=12701, Unknown=1, NotChecked=232, Total=14042 [2022-07-12 10:59:33,337 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 494 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 4668 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 7856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 4668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2875 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:33,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 3476 Invalid, 7856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 4668 Invalid, 0 Unknown, 2875 Unchecked, 2.9s Time] [2022-07-12 10:59:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-07-12 10:59:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 625. [2022-07-12 10:59:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 433 states have (on average 1.1570438799076213) internal successors, (501), 447 states have internal predecessors, (501), 132 states have call successors, (132), 43 states have call predecessors, (132), 59 states have return successors, (272), 134 states have call predecessors, (272), 131 states have call successors, (272) [2022-07-12 10:59:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 905 transitions. [2022-07-12 10:59:33,367 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 905 transitions. Word has length 178 [2022-07-12 10:59:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:33,367 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 905 transitions. [2022-07-12 10:59:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 4.560975609756097) internal successors, (187), 37 states have internal predecessors, (187), 15 states have call successors, (44), 11 states have call predecessors, (44), 10 states have return successors, (41), 13 states have call predecessors, (41), 14 states have call successors, (41) [2022-07-12 10:59:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 905 transitions. [2022-07-12 10:59:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 10:59:33,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:33,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:33,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 10:59:33,587 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,SelfDestructingSolverStorable16 [2022-07-12 10:59:33,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1578757065, now seen corresponding path program 2 times [2022-07-12 10:59:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:33,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942415879] [2022-07-12 10:59:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:59:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:59:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:59:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:59:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:59:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:59:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:59:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:59:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:59:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:59:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:59:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:59:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 10:59:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:59:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:59:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 24 proven. 32 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 10:59:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:34,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942415879] [2022-07-12 10:59:34,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942415879] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:34,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088770038] [2022-07-12 10:59:34,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:59:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:34,007 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) [2022-07-12 10:59:34,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:59:34,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:59:34,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:59:34,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-12 10:59:34,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 161 proven. 18 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:00:31,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:32,071 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 11:00:32,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 11:00:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-12 11:00:32,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088770038] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:00:32,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:00:32,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 28 [2022-07-12 11:00:32,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765358668] [2022-07-12 11:00:32,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:32,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 11:00:32,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 11:00:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=662, Unknown=4, NotChecked=0, Total=756 [2022-07-12 11:00:32,114 INFO L87 Difference]: Start difference. First operand 625 states and 905 transitions. Second operand has 28 states, 27 states have (on average 5.777777777777778) internal successors, (156), 24 states have internal predecessors, (156), 6 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:00:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:35,912 INFO L93 Difference]: Finished difference Result 1048 states and 1518 transitions. [2022-07-12 11:00:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 11:00:35,912 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.777777777777778) internal successors, (156), 24 states have internal predecessors, (156), 6 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) Word has length 182 [2022-07-12 11:00:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:35,916 INFO L225 Difference]: With dead ends: 1048 [2022-07-12 11:00:35,916 INFO L226 Difference]: Without dead ends: 798 [2022-07-12 11:00:35,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 388 SyntacticMatches, 15 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=539, Invalid=2997, Unknown=4, NotChecked=0, Total=3540 [2022-07-12 11:00:35,918 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 486 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 4835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 815 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:35,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1524 Invalid, 4835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3756 Invalid, 0 Unknown, 815 Unchecked, 2.4s Time] [2022-07-12 11:00:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-07-12 11:00:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 702. [2022-07-12 11:00:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 487 states have (on average 1.1457905544147844) internal successors, (558), 502 states have internal predecessors, (558), 147 states have call successors, (147), 51 states have call predecessors, (147), 67 states have return successors, (289), 148 states have call predecessors, (289), 146 states have call successors, (289) [2022-07-12 11:00:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 994 transitions. [2022-07-12 11:00:35,994 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 994 transitions. Word has length 182 [2022-07-12 11:00:35,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:35,994 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 994 transitions. [2022-07-12 11:00:35,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.777777777777778) internal successors, (156), 24 states have internal predecessors, (156), 6 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:00:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 994 transitions. [2022-07-12 11:00:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 11:00:35,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:35,997 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:36,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:36,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:36,218 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1011401663, now seen corresponding path program 2 times [2022-07-12 11:00:36,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:36,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257046074] [2022-07-12 11:00:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:36,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:00:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:00:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:00:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:00:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:00:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:00:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:00:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:00:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:00:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 11:00:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 11:00:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:00:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 24 proven. 32 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 11:00:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257046074] [2022-07-12 11:00:36,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257046074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076396101] [2022-07-12 11:00:36,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:00:36,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:36,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:36,746 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) [2022-07-12 11:00:36,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 11:00:37,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:00:37,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:37,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-12 11:00:37,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 11:00:38,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:38,308 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 26 treesize of output 14 [2022-07-12 11:00:38,386 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:00:38,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 11:00:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 24 proven. 34 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-12 11:00:38,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076396101] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:00:38,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:00:38,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 27 [2022-07-12 11:00:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431215574] [2022-07-12 11:00:38,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:38,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 11:00:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 11:00:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-07-12 11:00:38,421 INFO L87 Difference]: Start difference. First operand 702 states and 994 transitions. Second operand has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 4 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-12 11:00:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:40,588 INFO L93 Difference]: Finished difference Result 1015 states and 1441 transitions. [2022-07-12 11:00:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 11:00:40,588 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), 4 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 182 [2022-07-12 11:00:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:40,612 INFO L225 Difference]: With dead ends: 1015 [2022-07-12 11:00:40,612 INFO L226 Difference]: Without dead ends: 732 [2022-07-12 11:00:40,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 386 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=447, Invalid=1905, Unknown=0, NotChecked=0, Total=2352 [2022-07-12 11:00:40,615 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 451 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:40,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1062 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2068 Invalid, 0 Unknown, 686 Unchecked, 1.2s Time] [2022-07-12 11:00:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-12 11:00:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 696. [2022-07-12 11:00:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 483 states have (on average 1.1366459627329193) internal successors, (549), 500 states have internal predecessors, (549), 141 states have call successors, (141), 54 states have call predecessors, (141), 71 states have return successors, (277), 141 states have call predecessors, (277), 140 states have call successors, (277) [2022-07-12 11:00:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 967 transitions. [2022-07-12 11:00:40,662 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 967 transitions. Word has length 182 [2022-07-12 11:00:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:40,663 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 967 transitions. [2022-07-12 11:00:40,663 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), 4 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-12 11:00:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 967 transitions. [2022-07-12 11:00:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 11:00:40,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:40,666 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:40,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-12 11:00:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:40,886 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 921182923, now seen corresponding path program 1 times [2022-07-12 11:00:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017458954] [2022-07-12 11:00:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:00:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:00:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:00:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:00:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:00:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:00:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:00:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:00:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 11:00:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 11:00:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:00:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 11:00:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-12 11:00:41,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:41,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017458954] [2022-07-12 11:00:41,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017458954] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:41,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601973509] [2022-07-12 11:00:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:41,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:41,212 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) [2022-07-12 11:00:41,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 11:00:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 11:00:41,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:41,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:00:41,829 INFO L356 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2022-07-12 11:00:41,829 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 1 case distinctions, treesize of input 30 treesize of output 39 [2022-07-12 11:00:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 11:00:42,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:42,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601973509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:42,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:42,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-07-12 11:00:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600901800] [2022-07-12 11:00:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:00:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:00:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:00:42,123 INFO L87 Difference]: Start difference. First operand 696 states and 967 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:00:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:42,641 INFO L93 Difference]: Finished difference Result 978 states and 1357 transitions. [2022-07-12 11:00:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:00:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 186 [2022-07-12 11:00:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:42,645 INFO L225 Difference]: With dead ends: 978 [2022-07-12 11:00:42,645 INFO L226 Difference]: Without dead ends: 747 [2022-07-12 11:00:42,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 218 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-07-12 11:00:42,646 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 103 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:42,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 674 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 453 Invalid, 0 Unknown, 484 Unchecked, 0.4s Time] [2022-07-12 11:00:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-07-12 11:00:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 740. [2022-07-12 11:00:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 517 states have (on average 1.1353965183752417) internal successors, (587), 535 states have internal predecessors, (587), 147 states have call successors, (147), 58 states have call predecessors, (147), 75 states have return successors, (293), 146 states have call predecessors, (293), 146 states have call successors, (293) [2022-07-12 11:00:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1027 transitions. [2022-07-12 11:00:42,690 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1027 transitions. Word has length 186 [2022-07-12 11:00:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:42,690 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1027 transitions. [2022-07-12 11:00:42,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:00:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1027 transitions. [2022-07-12 11:00:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 11:00:42,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:42,693 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:42,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:42,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:42,910 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1202661328, now seen corresponding path program 1 times [2022-07-12 11:00:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:42,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321876915] [2022-07-12 11:00:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:42,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:00:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:00:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:00:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:00:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:00:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:00:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:00:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 11:00:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 11:00:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 11:00:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 11:00:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 11:00:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-12 11:00:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321876915] [2022-07-12 11:00:43,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321876915] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745013298] [2022-07-12 11:00:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:43,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:43,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:43,416 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) [2022-07-12 11:00:43,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 11:00:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 11:00:43,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-12 11:00:44,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:44,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745013298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:44,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:44,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-07-12 11:00:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345574074] [2022-07-12 11:00:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:00:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:00:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:00:44,022 INFO L87 Difference]: Start difference. First operand 740 states and 1027 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:00:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:44,207 INFO L93 Difference]: Finished difference Result 1145 states and 1652 transitions. [2022-07-12 11:00:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:00:44,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 188 [2022-07-12 11:00:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:44,211 INFO L225 Difference]: With dead ends: 1145 [2022-07-12 11:00:44,211 INFO L226 Difference]: Without dead ends: 740 [2022-07-12 11:00:44,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:00:44,213 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 17 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:44,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 855 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-07-12 11:00:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-07-12 11:00:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2022-07-12 11:00:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 517 states have (on average 1.1295938104448742) internal successors, (584), 535 states have internal predecessors, (584), 147 states have call successors, (147), 58 states have call predecessors, (147), 75 states have return successors, (293), 146 states have call predecessors, (293), 146 states have call successors, (293) [2022-07-12 11:00:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1024 transitions. [2022-07-12 11:00:44,255 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1024 transitions. Word has length 188 [2022-07-12 11:00:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:44,256 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1024 transitions. [2022-07-12 11:00:44,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:00:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1024 transitions. [2022-07-12 11:00:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 11:00:44,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:44,259 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:44,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:44,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:44,479 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1787563713, now seen corresponding path program 2 times [2022-07-12 11:00:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:44,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072577304] [2022-07-12 11:00:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:00:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:00:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:00:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:00:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:00:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:00:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:00:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 11:00:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:00:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 11:00:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 11:00:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:00:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 50 proven. 10 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-12 11:00:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072577304] [2022-07-12 11:00:45,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072577304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441344055] [2022-07-12 11:00:45,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:00:45,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:45,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:45,373 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) [2022-07-12 11:00:45,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 11:00:46,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:00:46,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:46,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 11:00:46,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:00:46,531 INFO L356 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2022-07-12 11:00:46,531 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 1 case distinctions, treesize of input 30 treesize of output 39 [2022-07-12 11:00:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 11:00:46,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:46,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441344055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:46,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:46,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 30 [2022-07-12 11:00:46,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674590980] [2022-07-12 11:00:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:00:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:00:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2022-07-12 11:00:46,939 INFO L87 Difference]: Start difference. First operand 740 states and 1024 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:00:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:47,491 INFO L93 Difference]: Finished difference Result 981 states and 1332 transitions. [2022-07-12 11:00:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:00:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 182 [2022-07-12 11:00:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:47,495 INFO L225 Difference]: With dead ends: 981 [2022-07-12 11:00:47,495 INFO L226 Difference]: Without dead ends: 765 [2022-07-12 11:00:47,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 211 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 11:00:47,496 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 96 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 282 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:47,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 572 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 445 Invalid, 0 Unknown, 282 Unchecked, 0.4s Time] [2022-07-12 11:00:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-07-12 11:00:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 761. [2022-07-12 11:00:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 534 states have (on average 1.1329588014981273) internal successors, (605), 552 states have internal predecessors, (605), 149 states have call successors, (149), 60 states have call predecessors, (149), 77 states have return successors, (296), 148 states have call predecessors, (296), 148 states have call successors, (296) [2022-07-12 11:00:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1050 transitions. [2022-07-12 11:00:47,533 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1050 transitions. Word has length 182 [2022-07-12 11:00:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:47,533 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1050 transitions. [2022-07-12 11:00:47,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:00:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1050 transitions. [2022-07-12 11:00:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 11:00:47,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:47,536 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:47,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:47,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:47,758 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:47,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2097802361, now seen corresponding path program 3 times [2022-07-12 11:00:47,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:47,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473451756] [2022-07-12 11:00:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:47,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:00:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:00:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:00:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:00:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:00:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:00:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:00:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:00:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 11:00:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 11:00:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:00:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 11:00:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-12 11:00:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473451756] [2022-07-12 11:00:48,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473451756] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033001344] [2022-07-12 11:00:48,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:00:48,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:48,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:48,300 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) [2022-07-12 11:00:48,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 11:00:49,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 11:00:49,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:49,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 11:00:49,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 121 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 11:00:50,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:50,608 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 11:00:50,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 11:00:50,613 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 11:00:50,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-12 11:00:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-12 11:00:50,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033001344] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:00:50,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:00:50,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 11] total 35 [2022-07-12 11:00:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099969648] [2022-07-12 11:00:50,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-12 11:00:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-12 11:00:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 11:00:50,655 INFO L87 Difference]: Start difference. First operand 761 states and 1050 transitions. Second operand has 35 states, 32 states have (on average 4.53125) internal successors, (145), 32 states have internal predecessors, (145), 9 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (37), 6 states have call predecessors, (37), 8 states have call successors, (37) [2022-07-12 11:00:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:56,267 INFO L93 Difference]: Finished difference Result 1326 states and 1922 transitions. [2022-07-12 11:00:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-12 11:00:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.53125) internal successors, (145), 32 states have internal predecessors, (145), 9 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (37), 6 states have call predecessors, (37), 8 states have call successors, (37) Word has length 186 [2022-07-12 11:00:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:56,282 INFO L225 Difference]: With dead ends: 1326 [2022-07-12 11:00:56,283 INFO L226 Difference]: Without dead ends: 1138 [2022-07-12 11:00:56,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 406 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=881, Invalid=5925, Unknown=0, NotChecked=0, Total=6806 [2022-07-12 11:00:56,299 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 558 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 5749 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 6719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 5749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:56,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1881 Invalid, 6719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 5749 Invalid, 0 Unknown, 548 Unchecked, 3.4s Time] [2022-07-12 11:00:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-07-12 11:00:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 989. [2022-07-12 11:00:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 687 states have (on average 1.1426491994177583) internal successors, (785), 709 states have internal predecessors, (785), 212 states have call successors, (212), 74 states have call predecessors, (212), 89 states have return successors, (427), 205 states have call predecessors, (427), 211 states have call successors, (427) [2022-07-12 11:00:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1424 transitions. [2022-07-12 11:00:56,409 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1424 transitions. Word has length 186 [2022-07-12 11:00:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:56,410 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1424 transitions. [2022-07-12 11:00:56,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.53125) internal successors, (145), 32 states have internal predecessors, (145), 9 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (37), 6 states have call predecessors, (37), 8 states have call successors, (37) [2022-07-12 11:00:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1424 transitions. [2022-07-12 11:00:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 11:00:56,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:56,413 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:56,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:56,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:56,634 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -7463595, now seen corresponding path program 1 times [2022-07-12 11:00:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:56,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475065336] [2022-07-12 11:00:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:00:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:00:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:00:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:00:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:00:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:00:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:00:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 11:00:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:00:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 11:00:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:00:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 11:00:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 23 proven. 19 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-07-12 11:00:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:57,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475065336] [2022-07-12 11:00:57,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475065336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:57,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049600417] [2022-07-12 11:00:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:57,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:57,007 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) [2022-07-12 11:00:57,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 11:00:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-12 11:00:57,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:57,584 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 10 treesize of output 8 [2022-07-12 11:00:57,920 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 16 treesize of output 18 [2022-07-12 11:01:03,154 INFO L356 Elim1Store]: treesize reduction 58, result has 31.8 percent of original size [2022-07-12 11:01:03,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 51 [2022-07-12 11:01:09,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,304 INFO L356 Elim1Store]: treesize reduction 146, result has 0.7 percent of original size [2022-07-12 11:01:09,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 92 treesize of output 44 [2022-07-12 11:01:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 218 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 11:01:09,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:11,834 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2645 Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_12| Int)) (let ((.cse1 (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_12| (store (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_~#src#1.base_12|) 0 (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#src~0#1.offset|)) 8 v_ArrVal_2645)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.base|))) (let ((.cse0 (mod (select .cse1 (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|)) 18446744073709551616))) (or (= .cse0 0) (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_cursor_harness_~#buf~3#1.offset|) 18446744073709551616))))))) is different from false [2022-07-12 11:01:11,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049600417] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:11,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:01:11,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 30 [2022-07-12 11:01:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286951109] [2022-07-12 11:01:11,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 11:01:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:11,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 11:01:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1190, Unknown=8, NotChecked=70, Total=1406 [2022-07-12 11:01:11,850 INFO L87 Difference]: Start difference. First operand 989 states and 1424 transitions. Second operand has 30 states, 28 states have (on average 5.714285714285714) internal successors, (160), 26 states have internal predecessors, (160), 8 states have call successors, (43), 8 states have call predecessors, (43), 9 states have return successors, (41), 7 states have call predecessors, (41), 8 states have call successors, (41) [2022-07-12 11:01:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:39,457 INFO L93 Difference]: Finished difference Result 1719 states and 2613 transitions. [2022-07-12 11:01:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 11:01:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.714285714285714) internal successors, (160), 26 states have internal predecessors, (160), 8 states have call successors, (43), 8 states have call predecessors, (43), 9 states have return successors, (41), 7 states have call predecessors, (41), 8 states have call successors, (41) Word has length 186 [2022-07-12 11:01:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:39,475 INFO L225 Difference]: With dead ends: 1719 [2022-07-12 11:01:39,491 INFO L226 Difference]: Without dead ends: 1067 [2022-07-12 11:01:39,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 283 SyntacticMatches, 11 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=649, Invalid=4157, Unknown=28, NotChecked=136, Total=4970 [2022-07-12 11:01:39,496 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 381 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 846 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:39,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1932 Invalid, 3815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2707 Invalid, 0 Unknown, 846 Unchecked, 1.3s Time] [2022-07-12 11:01:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-07-12 11:01:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 929. [2022-07-12 11:01:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 646 states have (on average 1.1377708978328174) internal successors, (735), 669 states have internal predecessors, (735), 197 states have call successors, (197), 69 states have call predecessors, (197), 85 states have return successors, (454), 190 states have call predecessors, (454), 196 states have call successors, (454) [2022-07-12 11:01:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1386 transitions. [2022-07-12 11:01:39,589 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1386 transitions. Word has length 186 [2022-07-12 11:01:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:39,589 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1386 transitions. [2022-07-12 11:01:39,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.714285714285714) internal successors, (160), 26 states have internal predecessors, (160), 8 states have call successors, (43), 8 states have call predecessors, (43), 9 states have return successors, (41), 7 states have call predecessors, (41), 8 states have call successors, (41) [2022-07-12 11:01:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1386 transitions. [2022-07-12 11:01:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 11:01:39,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:39,593 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:39,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-12 11:01:39,814 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -924236102, now seen corresponding path program 2 times [2022-07-12 11:01:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:39,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972351555] [2022-07-12 11:01:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:01:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:01:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:01:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:01:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:01:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:01:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:01:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:01:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:01:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:01:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:01:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:01:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 11:01:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 11:01:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 11:01:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-07-12 11:01:40,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972351555] [2022-07-12 11:01:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972351555] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848913582] [2022-07-12 11:01:40,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:01:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:40,148 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:01:40,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 11:01:40,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:01:40,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:01:40,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-12 11:01:40,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:41,080 INFO L356 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2022-07-12 11:01:41,080 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 2 case distinctions, treesize of input 30 treesize of output 39 [2022-07-12 11:01:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 184 proven. 14 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 11:01:41,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:42,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848913582] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:42,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:01:42,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2022-07-12 11:01:42,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370332883] [2022-07-12 11:01:42,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 11:01:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 11:01:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:01:42,156 INFO L87 Difference]: Start difference. First operand 929 states and 1386 transitions. Second operand has 24 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 8 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2022-07-12 11:01:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:44,127 INFO L93 Difference]: Finished difference Result 1773 states and 2764 transitions. [2022-07-12 11:01:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 11:01:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 8 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) Word has length 188 [2022-07-12 11:01:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:44,138 INFO L225 Difference]: With dead ends: 1773 [2022-07-12 11:01:44,138 INFO L226 Difference]: Without dead ends: 1371 [2022-07-12 11:01:44,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 274 SyntacticMatches, 14 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=350, Invalid=2956, Unknown=0, NotChecked=0, Total=3306 [2022-07-12 11:01:44,142 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 299 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1822 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:44,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1569 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 2192 Invalid, 0 Unknown, 1822 Unchecked, 1.1s Time] [2022-07-12 11:01:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2022-07-12 11:01:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1306. [2022-07-12 11:01:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 895 states have (on average 1.1418994413407821) internal successors, (1022), 916 states have internal predecessors, (1022), 296 states have call successors, (296), 95 states have call predecessors, (296), 114 states have return successors, (638), 294 states have call predecessors, (638), 295 states have call successors, (638) [2022-07-12 11:01:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1956 transitions. [2022-07-12 11:01:44,212 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1956 transitions. Word has length 188 [2022-07-12 11:01:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:44,212 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1956 transitions. [2022-07-12 11:01:44,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 8 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2022-07-12 11:01:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1956 transitions. [2022-07-12 11:01:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 11:01:44,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:44,219 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:44,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:44,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 11:01:44,437 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash -189621539, now seen corresponding path program 1 times [2022-07-12 11:01:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851254016] [2022-07-12 11:01:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:01:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:01:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:01:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:01:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:01:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:01:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:01:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:01:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:01:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:01:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:01:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:01:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:01:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:01:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 11:01:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-07-12 11:01:44,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:44,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851254016] [2022-07-12 11:01:44,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851254016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:44,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564069978] [2022-07-12 11:01:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:44,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:44,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:44,821 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:01:44,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 11:01:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:45,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-12 11:01:45,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:45,359 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 10 treesize of output 8 [2022-07-12 11:01:45,718 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 26 treesize of output 26 [2022-07-12 11:01:51,388 INFO L356 Elim1Store]: treesize reduction 58, result has 31.8 percent of original size [2022-07-12 11:01:51,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 57