./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:23:39,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:23:39,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:23:39,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:23:39,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:23:39,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:23:39,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:23:39,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:23:39,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:23:39,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:23:39,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:23:39,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:23:39,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:23:39,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:23:39,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:23:39,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:23:39,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:23:39,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:23:39,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:23:39,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:23:39,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:23:39,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:23:39,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:23:39,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:23:39,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:23:39,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:23:39,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:23:39,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:23:39,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:23:39,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:23:39,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:23:39,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:23:39,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:23:39,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:23:39,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:23:39,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:23:39,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:23:39,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:23:39,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:23:39,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:23:39,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:23:39,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:23:39,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:23:39,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:23:39,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:23:39,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:23:39,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:23:39,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:23:39,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:23:39,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:23:39,238 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:23:39,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:23:39,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:23:39,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:23:39,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:23:39,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:23:39,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:23:39,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:23:39,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:23:39,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:23:39,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:23:39,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:23:39,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:23:39,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:23:39,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:23:39,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:23:39,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:23:39,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:23:39,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:23:39,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:23:39,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:23:39,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:23:39,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:23:39,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa [2021-12-18 01:23:39,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:23:39,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:23:39,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:23:39,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:23:39,437 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:23:39,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2021-12-18 01:23:39,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba48b40f/bdec561a4ca946c7bcd3c8c79bea64c6/FLAG5f41ea5ce [2021-12-18 01:23:40,084 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:23:40,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2021-12-18 01:23:40,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba48b40f/bdec561a4ca946c7bcd3c8c79bea64c6/FLAG5f41ea5ce [2021-12-18 01:23:40,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba48b40f/bdec561a4ca946c7bcd3c8c79bea64c6 [2021-12-18 01:23:40,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:23:40,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:23:40,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:23:40,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:23:40,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:23:40,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:23:40" (1/1) ... [2021-12-18 01:23:40,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1387825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:40, skipping insertion in model container [2021-12-18 01:23:40,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:23:40" (1/1) ... [2021-12-18 01:23:40,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:23:40,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:23:40,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2021-12-18 01:23:40,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2021-12-18 01:23:41,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,583 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:23:41,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:23:41,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:23:41,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:23:41,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:23:41,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:23:41,592 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:23:41,592 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:23:41,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:23:41,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:23:41,710 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:23:41,801 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,802 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:23:41,967 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:23:41,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2021-12-18 01:23:41,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2021-12-18 01:23:41,993 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,994 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,994 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,994 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:41,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:42,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:23:42,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:23:42,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:23:42,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:23:42,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:23:42,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:23:42,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:23:42,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:23:42,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:23:42,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:23:42,036 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:23:42,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:42,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:42,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:23:42,272 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:23:42,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42 WrapperNode [2021-12-18 01:23:42,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:23:42,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:23:42,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:23:42,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:23:42,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,418 INFO L137 Inliner]: procedures = 690, calls = 2737, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 793 [2021-12-18 01:23:42,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:23:42,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:23:42,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:23:42,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:23:42,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:23:42,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:23:42,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:23:42,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:23:42,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (1/1) ... [2021-12-18 01:23:42,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:23:42,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:42,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 01:23:42,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 01:23:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-18 01:23:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-18 01:23:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:23:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:23:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:23:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-18 01:23:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-18 01:23:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-18 01:23:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 01:23:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 01:23:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:23:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 01:23:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 01:23:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 01:23:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 01:23:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:23:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:23:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:23:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:23:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:23:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:23:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:23:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:23:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:23:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-18 01:23:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-18 01:23:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 01:23:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 01:23:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-18 01:23:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-18 01:23:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:23:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:23:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-18 01:23:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-18 01:23:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:23:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-18 01:23:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-18 01:23:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:23:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-12-18 01:23:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-12-18 01:23:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:23:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:23:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-18 01:23:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-18 01:23:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 01:23:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 01:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-18 01:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:23:42,788 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:23:42,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:23:42,902 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-12-18 01:23:43,339 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:23:43,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:23:43,346 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 01:23:43,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:43 BoogieIcfgContainer [2021-12-18 01:23:43,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:23:43,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:23:43,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:23:43,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:23:43,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:23:40" (1/3) ... [2021-12-18 01:23:43,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56db9e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:23:43, skipping insertion in model container [2021-12-18 01:23:43,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:42" (2/3) ... [2021-12-18 01:23:43,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56db9e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:23:43, skipping insertion in model container [2021-12-18 01:23:43,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:43" (3/3) ... [2021-12-18 01:23:43,355 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_array_harness.i [2021-12-18 01:23:43,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:23:43,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:23:43,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:23:43,409 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 01:23:43,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:23:43,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-18 01:23:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-18 01:23:43,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:43,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-18 01:23:43,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2057633121, now seen corresponding path program 1 times [2021-12-18 01:23:43,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:43,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105514049] [2021-12-18 01:23:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:43,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 01:23:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 01:23:43,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:43,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105514049] [2021-12-18 01:23:43,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105514049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:43,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:43,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:23:43,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531442955] [2021-12-18 01:23:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:43,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:23:43,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:23:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:23:43,933 INFO L87 Difference]: Start difference. First operand has 133 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 01:23:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:44,270 INFO L93 Difference]: Finished difference Result 277 states and 358 transitions. [2021-12-18 01:23:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:23:44,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 71 [2021-12-18 01:23:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:44,279 INFO L225 Difference]: With dead ends: 277 [2021-12-18 01:23:44,280 INFO L226 Difference]: Without dead ends: 144 [2021-12-18 01:23:44,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:23:44,285 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:44,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 214 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:23:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-18 01:23:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2021-12-18 01:23:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 78 states have internal predecessors, (88), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-18 01:23:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2021-12-18 01:23:44,349 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 71 [2021-12-18 01:23:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:44,349 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2021-12-18 01:23:44,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 01:23:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2021-12-18 01:23:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-18 01:23:44,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:44,353 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-18 01:23:44,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:23:44,354 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash 866247645, now seen corresponding path program 1 times [2021-12-18 01:23:44,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073715334] [2021-12-18 01:23:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:44,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 01:23:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 01:23:44,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:44,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073715334] [2021-12-18 01:23:44,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073715334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:44,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:44,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:23:44,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606715445] [2021-12-18 01:23:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:44,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:23:44,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:23:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:23:44,697 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 01:23:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:45,209 INFO L93 Difference]: Finished difference Result 188 states and 225 transitions. [2021-12-18 01:23:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:23:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 71 [2021-12-18 01:23:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:45,212 INFO L225 Difference]: With dead ends: 188 [2021-12-18 01:23:45,212 INFO L226 Difference]: Without dead ends: 149 [2021-12-18 01:23:45,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:23:45,213 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 59 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:45,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 453 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:23:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-18 01:23:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 132. [2021-12-18 01:23:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 82 states have internal predecessors, (92), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2021-12-18 01:23:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2021-12-18 01:23:45,233 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 71 [2021-12-18 01:23:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:45,233 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2021-12-18 01:23:45,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 01:23:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2021-12-18 01:23:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-18 01:23:45,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:45,235 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-18 01:23:45,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 01:23:45,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1202353843, now seen corresponding path program 1 times [2021-12-18 01:23:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621148433] [2021-12-18 01:23:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:45,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 01:23:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 01:23:45,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:45,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621148433] [2021-12-18 01:23:45,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621148433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:45,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:45,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:23:45,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830764413] [2021-12-18 01:23:45,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:45,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:23:45,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:23:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:23:45,498 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 01:23:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:46,008 INFO L93 Difference]: Finished difference Result 203 states and 248 transitions. [2021-12-18 01:23:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:23:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 77 [2021-12-18 01:23:46,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:46,011 INFO L225 Difference]: With dead ends: 203 [2021-12-18 01:23:46,011 INFO L226 Difference]: Without dead ends: 162 [2021-12-18 01:23:46,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:46,014 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 131 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:46,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 473 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:23:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-18 01:23:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 127. [2021-12-18 01:23:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-18 01:23:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2021-12-18 01:23:46,024 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 77 [2021-12-18 01:23:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:46,025 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2021-12-18 01:23:46,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 01:23:46,025 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2021-12-18 01:23:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-18 01:23:46,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:46,027 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:46,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 01:23:46,027 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash 845366680, now seen corresponding path program 1 times [2021-12-18 01:23:46,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:46,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961940909] [2021-12-18 01:23:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:46,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:23:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:23:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:23:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 01:23:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 01:23:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 01:23:46,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961940909] [2021-12-18 01:23:46,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961940909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:46,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:46,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:23:46,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069815045] [2021-12-18 01:23:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:46,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:23:46,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:23:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:46,490 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 01:23:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:47,294 INFO L93 Difference]: Finished difference Result 206 states and 248 transitions. [2021-12-18 01:23:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:23:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 121 [2021-12-18 01:23:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:47,296 INFO L225 Difference]: With dead ends: 206 [2021-12-18 01:23:47,296 INFO L226 Difference]: Without dead ends: 152 [2021-12-18 01:23:47,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-12-18 01:23:47,298 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 83 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:47,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 580 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 01:23:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-18 01:23:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 132. [2021-12-18 01:23:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 82 states have internal predecessors, (90), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2021-12-18 01:23:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2021-12-18 01:23:47,315 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 121 [2021-12-18 01:23:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:47,316 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2021-12-18 01:23:47,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 01:23:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2021-12-18 01:23:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 01:23:47,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:47,318 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:47,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 01:23:47,318 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 606085033, now seen corresponding path program 1 times [2021-12-18 01:23:47,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453714997] [2021-12-18 01:23:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:47,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:23:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:23:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:23:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 01:23:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:23:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 01:23:47,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:47,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453714997] [2021-12-18 01:23:47,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453714997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:47,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:47,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:23:47,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285992556] [2021-12-18 01:23:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:47,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:23:47,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:23:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:23:47,690 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 01:23:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:48,586 INFO L93 Difference]: Finished difference Result 212 states and 256 transitions. [2021-12-18 01:23:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 01:23:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 127 [2021-12-18 01:23:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:48,588 INFO L225 Difference]: With dead ends: 212 [2021-12-18 01:23:48,588 INFO L226 Difference]: Without dead ends: 144 [2021-12-18 01:23:48,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-12-18 01:23:48,590 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 109 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:48,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 569 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 01:23:48,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-18 01:23:48,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 125. [2021-12-18 01:23:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 77 states have internal predecessors, (83), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-18 01:23:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2021-12-18 01:23:48,598 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 127 [2021-12-18 01:23:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:48,599 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2021-12-18 01:23:48,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 01:23:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2021-12-18 01:23:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-18 01:23:48,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:48,600 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-18 01:23:48,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 01:23:48,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1368893272, now seen corresponding path program 1 times [2021-12-18 01:23:48,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:48,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510286681] [2021-12-18 01:23:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:48,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:23:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:23:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:23:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:23:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 01:23:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-18 01:23:49,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510286681] [2021-12-18 01:23:49,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510286681] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:23:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977855844] [2021-12-18 01:23:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:49,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:23:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:49,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:23:49,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 01:23:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-18 01:23:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:51,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:23:51,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 80 [2021-12-18 01:23:51,207 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-18 01:23:51,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 79 [2021-12-18 01:23:51,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:51,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 11 [2021-12-18 01:23:51,952 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-12-18 01:23:51,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 198 treesize of output 123 [2021-12-18 01:23:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-18 01:23:52,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:24:22,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2021-12-18 01:24:22,249 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-18 01:24:22,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 312 treesize of output 294 [2021-12-18 01:24:22,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2021-12-18 01:24:22,274 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-18 01:24:22,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 578 treesize of output 1 [2021-12-18 01:24:22,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2021-12-18 01:24:22,282 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-18 01:24:22,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 1 [2021-12-18 01:24:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-18 01:24:23,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977855844] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:24:23,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 01:24:23,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32, 19] total 68 [2021-12-18 01:24:23,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007963977] [2021-12-18 01:24:23,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 01:24:23,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-18 01:24:23,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-18 01:24:23,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4353, Unknown=7, NotChecked=0, Total=4556 [2021-12-18 01:24:23,118 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand has 68 states, 57 states have (on average 2.491228070175439) internal successors, (142), 48 states have internal predecessors, (142), 24 states have call successors, (55), 14 states have call predecessors, (55), 17 states have return successors, (53), 29 states have call predecessors, (53), 19 states have call successors, (53) [2021-12-18 01:24:27,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:24:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:30,377 INFO L93 Difference]: Finished difference Result 226 states and 274 transitions. [2021-12-18 01:24:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-18 01:24:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 57 states have (on average 2.491228070175439) internal successors, (142), 48 states have internal predecessors, (142), 24 states have call successors, (55), 14 states have call predecessors, (55), 17 states have return successors, (53), 29 states have call predecessors, (53), 19 states have call successors, (53) Word has length 132 [2021-12-18 01:24:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:30,379 INFO L225 Difference]: With dead ends: 226 [2021-12-18 01:24:30,379 INFO L226 Difference]: Without dead ends: 180 [2021-12-18 01:24:30,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 255 SyntacticMatches, 10 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=517, Invalid=9576, Unknown=7, NotChecked=0, Total=10100 [2021-12-18 01:24:30,382 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 143 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 4298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:30,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 3055 Invalid, 4298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3511 Invalid, 1 Unknown, 686 Unchecked, 5.6s Time] [2021-12-18 01:24:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-18 01:24:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 155. [2021-12-18 01:24:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 101 states have internal predecessors, (107), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2021-12-18 01:24:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 181 transitions. [2021-12-18 01:24:30,391 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 181 transitions. Word has length 132 [2021-12-18 01:24:30,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:30,392 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 181 transitions. [2021-12-18 01:24:30,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 57 states have (on average 2.491228070175439) internal successors, (142), 48 states have internal predecessors, (142), 24 states have call successors, (55), 14 states have call predecessors, (55), 17 states have return successors, (53), 29 states have call predecessors, (53), 19 states have call successors, (53) [2021-12-18 01:24:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 181 transitions. [2021-12-18 01:24:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-18 01:24:30,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:30,394 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:30,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 01:24:30,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 01:24:30,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1120489894, now seen corresponding path program 1 times [2021-12-18 01:24:30,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:30,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454543109] [2021-12-18 01:24:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:30,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:24:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:24:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:24:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:24:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:24:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:24:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:24:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:24:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:24:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:24:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:24:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 01:24:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:24:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-18 01:24:31,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:31,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454543109] [2021-12-18 01:24:31,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454543109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:31,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:31,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-18 01:24:31,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150903636] [2021-12-18 01:24:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:31,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 01:24:31,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 01:24:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-12-18 01:24:31,118 INFO L87 Difference]: Start difference. First operand 155 states and 181 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 12 states have internal predecessors, (64), 3 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:24:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:32,516 INFO L93 Difference]: Finished difference Result 217 states and 256 transitions. [2021-12-18 01:24:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 01:24:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 12 states have internal predecessors, (64), 3 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 2 states have call successors, (22) Word has length 138 [2021-12-18 01:24:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:32,518 INFO L225 Difference]: With dead ends: 217 [2021-12-18 01:24:32,518 INFO L226 Difference]: Without dead ends: 163 [2021-12-18 01:24:32,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 01:24:32,519 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 142 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:32,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1143 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 01:24:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-18 01:24:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2021-12-18 01:24:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 99 states have (on average 1.0909090909090908) internal successors, (108), 103 states have internal predecessors, (108), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2021-12-18 01:24:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2021-12-18 01:24:32,528 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 138 [2021-12-18 01:24:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:32,528 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2021-12-18 01:24:32,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 12 states have internal predecessors, (64), 3 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:24:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2021-12-18 01:24:32,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 01:24:32,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:32,530 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:32,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 01:24:32,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:32,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1108978750, now seen corresponding path program 1 times [2021-12-18 01:24:32,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:32,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470515429] [2021-12-18 01:24:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:32,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:24:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:24:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:24:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:24:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:24:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:24:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:24:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:24:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:24:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:24:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:24:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:24:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 01:24:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 01:24:32,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:32,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470515429] [2021-12-18 01:24:32,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470515429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:32,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:32,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:24:32,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045689735] [2021-12-18 01:24:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:32,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:24:32,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:24:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:24:32,886 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 01:24:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:33,578 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2021-12-18 01:24:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:24:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 133 [2021-12-18 01:24:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:33,579 INFO L225 Difference]: With dead ends: 208 [2021-12-18 01:24:33,579 INFO L226 Difference]: Without dead ends: 158 [2021-12-18 01:24:33,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:24:33,580 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 188 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:33,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 351 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:24:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-18 01:24:33,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-12-18 01:24:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 100 states have (on average 1.09) internal successors, (109), 104 states have internal predecessors, (109), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2021-12-18 01:24:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2021-12-18 01:24:33,588 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 133 [2021-12-18 01:24:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:33,589 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2021-12-18 01:24:33,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 01:24:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2021-12-18 01:24:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 01:24:33,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:33,590 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:33,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 01:24:33,591 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1489473318, now seen corresponding path program 1 times [2021-12-18 01:24:33,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809242014] [2021-12-18 01:24:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:33,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:24:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:24:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:24:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:24:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:24:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:24:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:24:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:24:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:24:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:24:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:24:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:24:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 01:24:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-18 01:24:34,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809242014] [2021-12-18 01:24:34,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809242014] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106379598] [2021-12-18 01:24:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:34,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:24:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:34,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:24:34,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 01:24:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:35,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 126 conjunts are in the unsatisfiable core [2021-12-18 01:24:35,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:38,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:25:14,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:25:14,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:25:14,178 INFO L354 Elim1Store]: treesize reduction 28, result has 41.7 percent of original size [2021-12-18 01:25:14,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 42 [2021-12-18 01:25:14,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 95 [2021-12-18 01:25:14,310 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-18 01:25:14,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 90 [2021-12-18 01:25:14,335 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 01:25:14,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 59 [2021-12-18 01:25:19,141 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-12-18 01:25:19,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 228 treesize of output 145 [2021-12-18 01:25:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-18 01:25:21,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:25:46,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106379598] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:25:46,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:25:46,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 37] total 58 [2021-12-18 01:25:46,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760963047] [2021-12-18 01:25:46,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:25:46,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-18 01:25:46,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:25:46,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-18 01:25:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=4225, Unknown=27, NotChecked=0, Total=4422 [2021-12-18 01:25:46,098 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand has 58 states, 50 states have (on average 2.22) internal successors, (111), 40 states have internal predecessors, (111), 17 states have call successors, (43), 11 states have call predecessors, (43), 14 states have return successors, (40), 23 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-18 01:26:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:17,344 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2021-12-18 01:26:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-18 01:26:17,345 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 50 states have (on average 2.22) internal successors, (111), 40 states have internal predecessors, (111), 17 states have call successors, (43), 11 states have call predecessors, (43), 14 states have return successors, (40), 23 states have call predecessors, (40), 14 states have call successors, (40) Word has length 134 [2021-12-18 01:26:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:17,349 INFO L225 Difference]: With dead ends: 252 [2021-12-18 01:26:17,349 INFO L226 Difference]: Without dead ends: 198 [2021-12-18 01:26:17,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 146 SyntacticMatches, 7 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 86.2s TimeCoverageRelationStatistics Valid=462, Invalid=9800, Unknown=40, NotChecked=0, Total=10302 [2021-12-18 01:26:17,352 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 130 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 958 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:17,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 2903 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3421 Invalid, 0 Unknown, 958 Unchecked, 3.2s Time] [2021-12-18 01:26:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-18 01:26:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 164. [2021-12-18 01:26:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 110 states have internal predecessors, (117), 36 states have call successors, (36), 18 states have call predecessors, (36), 22 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2021-12-18 01:26:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 192 transitions. [2021-12-18 01:26:17,368 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 192 transitions. Word has length 134 [2021-12-18 01:26:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:17,369 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 192 transitions. [2021-12-18 01:26:17,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 50 states have (on average 2.22) internal successors, (111), 40 states have internal predecessors, (111), 17 states have call successors, (43), 11 states have call predecessors, (43), 14 states have return successors, (40), 23 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-18 01:26:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 192 transitions. [2021-12-18 01:26:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-18 01:26:17,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:17,371 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:26:17,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 01:26:17,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-18 01:26:17,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 982362820, now seen corresponding path program 2 times [2021-12-18 01:26:17,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:26:17,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881466499] [2021-12-18 01:26:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:17,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:26:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:26:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:26:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:26:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:26:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:26:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:26:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:26:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:26:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:26:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:26:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:26:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:26:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:26:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:26:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:26:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:26:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:26:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:26:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:26:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:26:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:26:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 01:26:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-18 01:26:18,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:26:18,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881466499] [2021-12-18 01:26:18,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881466499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:26:18,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991931875] [2021-12-18 01:26:18,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:26:18,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:26:18,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:26:18,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:26:18,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 01:26:19,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:26:19,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:26:19,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-18 01:26:19,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:19,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:26:22,031 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1293 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_16| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_17| Int) (v_ArrVal_1290 Int)) (and (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1327_16|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1327_16|) v_ArrVal_1290) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1327_17|) v_ArrVal_1293))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_16| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_17|))) is different from true [2021-12-18 01:26:25,114 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1293 Int) (v_ArrVal_1297 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_16| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1336_16| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_17| Int) (v_ArrVal_1290 Int)) (and (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1327_16|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1327_16|) v_ArrVal_1290) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1327_17|) v_ArrVal_1293) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1336_16|) v_ArrVal_1297))) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1336_16|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_16| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_17|))) is different from true [2021-12-18 01:26:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:26:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:26:25,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:26:25,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:26:25,224 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-12-18 01:26:25,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 48 [2021-12-18 01:26:25,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 80 [2021-12-18 01:26:25,267 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-18 01:26:25,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 79 [2021-12-18 01:26:25,285 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 01:26:25,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 48 [2021-12-18 01:26:25,972 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-12-18 01:26:25,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 119 [2021-12-18 01:26:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 83 trivial. 3 not checked. [2021-12-18 01:26:26,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:27:03,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991931875] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:27:03,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:27:03,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 34] total 53 [2021-12-18 01:27:03,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260711141] [2021-12-18 01:27:03,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:27:03,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-18 01:27:03,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:27:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-18 01:27:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3378, Unknown=18, NotChecked=234, Total=3782 [2021-12-18 01:27:03,009 INFO L87 Difference]: Start difference. First operand 164 states and 192 transitions. Second operand has 53 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 39 states have internal predecessors, (107), 14 states have call successors, (37), 10 states have call predecessors, (37), 13 states have return successors, (35), 19 states have call predecessors, (35), 12 states have call successors, (35) [2021-12-18 01:27:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:15,139 INFO L93 Difference]: Finished difference Result 271 states and 317 transitions. [2021-12-18 01:27:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-18 01:27:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 39 states have internal predecessors, (107), 14 states have call successors, (37), 10 states have call predecessors, (37), 13 states have return successors, (35), 19 states have call predecessors, (35), 12 states have call successors, (35) Word has length 135 [2021-12-18 01:27:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:15,148 INFO L225 Difference]: With dead ends: 271 [2021-12-18 01:27:15,148 INFO L226 Difference]: Without dead ends: 212 [2021-12-18 01:27:15,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 151 SyntacticMatches, 8 SemanticMatches, 104 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=519, Invalid=10181, Unknown=20, NotChecked=410, Total=11130 [2021-12-18 01:27:15,151 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 225 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1217 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:27:15,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 2802 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3020 Invalid, 0 Unknown, 1217 Unchecked, 3.0s Time] [2021-12-18 01:27:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-18 01:27:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2021-12-18 01:27:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 106 states have (on average 1.1226415094339623) internal successors, (119), 111 states have internal predecessors, (119), 36 states have call successors, (36), 18 states have call predecessors, (36), 22 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2021-12-18 01:27:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 194 transitions. [2021-12-18 01:27:15,166 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 194 transitions. Word has length 135 [2021-12-18 01:27:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:15,166 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 194 transitions. [2021-12-18 01:27:15,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 39 states have internal predecessors, (107), 14 states have call successors, (37), 10 states have call predecessors, (37), 13 states have return successors, (35), 19 states have call predecessors, (35), 12 states have call successors, (35) [2021-12-18 01:27:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 194 transitions. [2021-12-18 01:27:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-18 01:27:15,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:15,168 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:27:15,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 01:27:15,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:27:15,375 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1057350606, now seen corresponding path program 1 times [2021-12-18 01:27:15,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:27:15,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392436070] [2021-12-18 01:27:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:15,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:27:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:27:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:27:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:27:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:27:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:27:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:27:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:27:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:27:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:27:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:27:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:27:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:27:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:27:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:27:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:27:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 01:27:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 01:27:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-18 01:27:15,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:27:15,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392436070] [2021-12-18 01:27:15,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392436070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:27:15,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:27:15,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 01:27:15,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362587642] [2021-12-18 01:27:15,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:27:15,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 01:27:15,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:27:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 01:27:15,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:27:15,669 INFO L87 Difference]: Start difference. First operand 165 states and 194 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:27:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:16,455 INFO L93 Difference]: Finished difference Result 267 states and 310 transitions. [2021-12-18 01:27:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:27:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 141 [2021-12-18 01:27:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:16,457 INFO L225 Difference]: With dead ends: 267 [2021-12-18 01:27:16,457 INFO L226 Difference]: Without dead ends: 128 [2021-12-18 01:27:16,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-18 01:27:16,458 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 164 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:27:16,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 559 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 01:27:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-18 01:27:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-12-18 01:27:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 80 states have (on average 1.0875) internal successors, (87), 82 states have internal predecessors, (87), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-18 01:27:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2021-12-18 01:27:16,464 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 141 [2021-12-18 01:27:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:16,464 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2021-12-18 01:27:16,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:27:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2021-12-18 01:27:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-18 01:27:16,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:16,466 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:27:16,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 01:27:16,466 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash 299871770, now seen corresponding path program 3 times [2021-12-18 01:27:16,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:27:16,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49863803] [2021-12-18 01:27:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:16,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:27:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:27:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:27:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:27:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:27:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:27:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:27:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:27:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:27:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:27:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:27:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:27:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:27:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:27:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:27:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:27:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 01:27:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 01:27:17,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:27:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49863803] [2021-12-18 01:27:17,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49863803] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:27:17,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566444902] [2021-12-18 01:27:17,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 01:27:17,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:27:17,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:27:17,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:27:17,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 01:27:19,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 01:27:19,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:27:19,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-18 01:27:19,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:27:19,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:27:26,169 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2150 Int) (v_ArrVal_2144 Int) (v_ArrVal_2135 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_28| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_29| Int)) (and (<= 1 |v_#Ultimate.C_memcpy_#t~loopctr1327_28|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) |c_#Ultimate.C_memcpy_dest.offset| v_ArrVal_2135) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1327_28|) v_ArrVal_2144) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1327_29|) v_ArrVal_2150))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_28| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_29|))) is different from true [2021-12-18 01:27:33,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:27:33,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:27:33,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:27:33,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:27:33,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:27:33,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:27:33,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2021-12-18 01:27:33,426 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:27:33,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-12-18 01:27:35,530 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-18 01:27:35,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 59 [2021-12-18 01:27:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 3 refuted. 1 times theorem prover too weak. 121 trivial. 3 not checked. [2021-12-18 01:27:35,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:27:40,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566444902] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:27:40,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:27:40,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 52 [2021-12-18 01:27:40,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968402630] [2021-12-18 01:27:40,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:27:40,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-18 01:27:40,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:27:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-18 01:27:40,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=3389, Unknown=7, NotChecked=116, Total=3660 [2021-12-18 01:27:40,027 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 39 states have internal predecessors, (108), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-18 01:27:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:58,569 INFO L93 Difference]: Finished difference Result 185 states and 219 transitions. [2021-12-18 01:27:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 01:27:58,569 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 39 states have internal predecessors, (108), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) Word has length 136 [2021-12-18 01:27:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:58,570 INFO L225 Difference]: With dead ends: 185 [2021-12-18 01:27:58,570 INFO L226 Difference]: Without dead ends: 130 [2021-12-18 01:27:58,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=341, Invalid=7308, Unknown=11, NotChecked=172, Total=7832 [2021-12-18 01:27:58,572 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 63 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 923 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:27:58,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 2236 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2378 Invalid, 0 Unknown, 923 Unchecked, 2.3s Time] [2021-12-18 01:27:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-18 01:27:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2021-12-18 01:27:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 83 states have internal predecessors, (88), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-18 01:27:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2021-12-18 01:27:58,579 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 136 [2021-12-18 01:27:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:58,579 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2021-12-18 01:27:58,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 39 states have internal predecessors, (108), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-18 01:27:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2021-12-18 01:27:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-18 01:27:58,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:58,580 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:27:58,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-18 01:27:58,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:27:58,789 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 617485700, now seen corresponding path program 4 times [2021-12-18 01:27:58,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:27:58,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273595181] [2021-12-18 01:27:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:58,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:27:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:27:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:27:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:27:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:27:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:27:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:27:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:27:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:27:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:27:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:27:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:27:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:27:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:27:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:27:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:27:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:27:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 01:27:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 01:27:59,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:27:59,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273595181] [2021-12-18 01:27:59,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273595181] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:27:59,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160691625] [2021-12-18 01:27:59,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-18 01:27:59,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:27:59,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:27:59,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:27:59,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 01:28:00,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-18 01:28:00,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:28:00,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3287 conjuncts, 166 conjunts are in the unsatisfiable core [2021-12-18 01:28:00,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:28:01,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:28:31,406 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1327_41| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_42| Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_43| Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| Int) (v_ArrVal_2980 Int) (v_ArrVal_2995 Int) (v_ArrVal_2987 Int) (v_ArrVal_2989 Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67|))) (and (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616)) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_41|) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_41| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_42|) (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67|)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| 18446744073709551616) |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2980) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_41| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2987) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_42| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2989) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_43| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2995))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_42| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_43|)))) is different from true [2021-12-18 01:28:36,055 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1327_41| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_42| Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_43| Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| Int) (v_ArrVal_2980 Int) (v_ArrVal_2995 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1336_28| Int) (v_ArrVal_3002 Int) (v_ArrVal_2987 Int) (v_ArrVal_2989 Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67|))) (and (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| 18446744073709551616) |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2980) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_41| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2987) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_42| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2989) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_43| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2995) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1336_28|) v_ArrVal_3002))) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1336_28|) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_41|) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_41| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_42|) (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_40_67|)) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_42| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_43|)))) is different from true [2021-12-18 01:28:36,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,559 INFO L354 Elim1Store]: treesize reduction 93, result has 39.2 percent of original size [2021-12-18 01:28:36,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 81 [2021-12-18 01:28:36,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 81 [2021-12-18 01:28:36,835 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-18 01:28:36,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 80 [2021-12-18 01:28:36,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:28:36,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 11 [2021-12-18 01:28:38,582 WARN L322 ript$VariableManager]: TermVariabe |aux_mod_ULTIMATE.start_aws_string_new_from_array_harness_~alloc_size~2#1_125| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-18 01:28:38,679 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-12-18 01:28:38,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 200 treesize of output 125 [2021-12-18 01:28:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 37 refuted. 3 times theorem prover too weak. 74 trivial. 5 not checked. [2021-12-18 01:28:39,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:28:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160691625] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:28:57,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:28:57,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 46] total 67 [2021-12-18 01:28:57,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146500584] [2021-12-18 01:28:57,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:28:57,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-18 01:28:57,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:28:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-18 01:28:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=5209, Unknown=18, NotChecked=290, Total=5700 [2021-12-18 01:28:57,490 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand has 67 states, 58 states have (on average 2.1379310344827585) internal successors, (124), 49 states have internal predecessors, (124), 19 states have call successors, (44), 10 states have call predecessors, (44), 15 states have return successors, (41), 24 states have call predecessors, (41), 17 states have call successors, (41) [2021-12-18 01:29:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:29:28,222 INFO L93 Difference]: Finished difference Result 186 states and 219 transitions. [2021-12-18 01:29:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-18 01:29:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 58 states have (on average 2.1379310344827585) internal successors, (124), 49 states have internal predecessors, (124), 19 states have call successors, (44), 10 states have call predecessors, (44), 15 states have return successors, (41), 24 states have call predecessors, (41), 17 states have call successors, (41) Word has length 137 [2021-12-18 01:29:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:29:28,224 INFO L225 Difference]: With dead ends: 186 [2021-12-18 01:29:28,224 INFO L226 Difference]: Without dead ends: 131 [2021-12-18 01:29:28,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 133 SyntacticMatches, 5 SemanticMatches, 110 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 77.8s TimeCoverageRelationStatistics Valid=451, Invalid=11523, Unknown=24, NotChecked=434, Total=12432 [2021-12-18 01:29:28,225 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 194 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1308 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:29:28,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 2905 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2324 Invalid, 0 Unknown, 1308 Unchecked, 2.6s Time] [2021-12-18 01:29:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-18 01:29:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-12-18 01:29:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 84 states have internal predecessors, (89), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-18 01:29:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2021-12-18 01:29:28,232 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 137 [2021-12-18 01:29:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:29:28,233 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2021-12-18 01:29:28,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 58 states have (on average 2.1379310344827585) internal successors, (124), 49 states have internal predecessors, (124), 19 states have call successors, (44), 10 states have call predecessors, (44), 15 states have return successors, (41), 24 states have call predecessors, (41), 17 states have call successors, (41) [2021-12-18 01:29:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2021-12-18 01:29:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-18 01:29:28,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:29:28,234 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:29:28,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 01:29:28,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-18 01:29:28,441 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:29:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:29:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1873582938, now seen corresponding path program 5 times [2021-12-18 01:29:28,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:29:28,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151695540] [2021-12-18 01:29:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:29:28,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:29:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:29:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:29:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:29:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:29:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:29:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:29:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:29:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:29:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:29:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:29:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:29:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:29:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:29:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:29:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:29:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:29:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:29:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:29:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:29:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:29:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:29:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:29:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:29:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 01:29:29,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:29:29,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151695540] [2021-12-18 01:29:29,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151695540] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:29:29,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247105429] [2021-12-18 01:29:29,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-18 01:29:29,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:29:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:29:29,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:29:29,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 01:29:50,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-18 01:29:50,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:29:50,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 3415 conjuncts, 184 conjunts are in the unsatisfiable core [2021-12-18 01:29:50,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:29:52,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:30:19,568 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1327_63| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_61| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_62| Int) (v_ArrVal_4005 Int) (v_ArrVal_4016 Int) (v_ArrVal_4014 Int) (v_ArrVal_4022 Int) (v_ArrVal_4031 Int)) (and (<= 2 |v_#Ultimate.C_memcpy_#t~loopctr1327_61|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_61| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_62|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_62| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_63|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) |c_#Ultimate.C_memcpy_dest.offset| v_ArrVal_4005) (+ |c_#Ultimate.C_memcpy_dest.offset| 1) v_ArrVal_4014) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_61| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_4016) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_62| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_4022) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_63| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_4031))))) is different from true [2021-12-18 01:30:23,895 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1327_63| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_61| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_62| Int) (v_ArrVal_4005 Int) (v_ArrVal_4016 Int) (v_ArrVal_4014 Int) (v_ArrVal_4022 Int) (v_ArrVal_4033 Int) (v_ArrVal_4031 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) |c_#Ultimate.C_memcpy_dest.offset| v_ArrVal_4005) (+ |c_#Ultimate.C_memcpy_dest.offset| 1) v_ArrVal_4014) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_61| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_4016) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_62| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_4022) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_63| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_4031) |c_#Ultimate.C_memcpy_dest.offset| v_ArrVal_4033))) (<= 2 |v_#Ultimate.C_memcpy_#t~loopctr1327_61|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_61| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_62|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_62| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_63|))) is different from true [2021-12-18 01:30:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 61 [2021-12-18 01:30:24,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 74 [2021-12-18 01:30:24,095 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-18 01:30:24,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 77 [2021-12-18 01:30:24,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:30:24,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 11 [2021-12-18 01:30:25,025 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-12-18 01:30:25,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 115 [2021-12-18 01:30:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 15 proven. 41 refuted. 3 times theorem prover too weak. 74 trivial. 6 not checked. [2021-12-18 01:30:25,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:31:16,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247105429] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:31:16,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:31:16,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 46] total 70 [2021-12-18 01:31:16,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954902897] [2021-12-18 01:31:16,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:31:16,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-18 01:31:16,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:31:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-18 01:31:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=5639, Unknown=32, NotChecked=302, Total=6162 [2021-12-18 01:31:16,808 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 70 states, 62 states have (on average 2.032258064516129) internal successors, (126), 53 states have internal predecessors, (126), 19 states have call successors, (44), 10 states have call predecessors, (44), 15 states have return successors, (41), 24 states have call predecessors, (41), 17 states have call successors, (41) [2021-12-18 01:32:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:03,863 INFO L93 Difference]: Finished difference Result 185 states and 217 transitions. [2021-12-18 01:32:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-18 01:32:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 62 states have (on average 2.032258064516129) internal successors, (126), 53 states have internal predecessors, (126), 19 states have call successors, (44), 10 states have call predecessors, (44), 15 states have return successors, (41), 24 states have call predecessors, (41), 17 states have call successors, (41) Word has length 138 [2021-12-18 01:32:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:03,865 INFO L225 Difference]: With dead ends: 185 [2021-12-18 01:32:03,865 INFO L226 Difference]: Without dead ends: 135 [2021-12-18 01:32:03,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 119 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2370 ImplicationChecksByTransitivity, 110.4s TimeCoverageRelationStatistics Valid=511, Invalid=13491, Unknown=48, NotChecked=470, Total=14520 [2021-12-18 01:32:03,866 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 218 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 4140 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 5469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 4140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1084 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:03,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 2771 Invalid, 5469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 4140 Invalid, 0 Unknown, 1084 Unchecked, 4.4s Time] [2021-12-18 01:32:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-18 01:32:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2021-12-18 01:32:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 86 states have internal predecessors, (92), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-18 01:32:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2021-12-18 01:32:03,874 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 138 [2021-12-18 01:32:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:03,875 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2021-12-18 01:32:03,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 62 states have (on average 2.032258064516129) internal successors, (126), 53 states have internal predecessors, (126), 19 states have call successors, (44), 10 states have call predecessors, (44), 15 states have return successors, (41), 24 states have call predecessors, (41), 17 states have call successors, (41) [2021-12-18 01:32:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2021-12-18 01:32:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-18 01:32:03,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:03,876 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:32:03,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:04,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:04,091 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:04,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2137075644, now seen corresponding path program 6 times [2021-12-18 01:32:04,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:04,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899183817] [2021-12-18 01:32:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:04,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:32:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:32:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:32:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:32:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:32:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:32:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:32:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:32:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:32:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:32:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:32:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:32:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:32:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:32:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 01:32:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 01:32:05,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:05,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899183817] [2021-12-18 01:32:05,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899183817] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:05,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386910642] [2021-12-18 01:32:05,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-18 01:32:05,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:05,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:05,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 01:32:30,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-18 01:32:30,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:32:30,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 3543 conjuncts, 145 conjunts are in the unsatisfiable core [2021-12-18 01:32:30,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:31,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:33:10,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:10,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 67 [2021-12-18 01:33:10,656 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:33:10,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-12-18 01:33:11,609 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-18 01:33:11,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-18 01:33:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-18 01:33:11,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:33:25,274 WARN L227 SmtUtils]: Spent 11.99s on a formula simplification. DAG size of input: 198 DAG size of output: 196 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-18 01:33:25,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386910642] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:33:25,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:33:25,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 42] total 67 [2021-12-18 01:33:25,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140967676] [2021-12-18 01:33:25,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:33:25,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-18 01:33:25,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:33:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-18 01:33:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=5496, Unknown=13, NotChecked=0, Total=5700 [2021-12-18 01:33:25,739 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand has 67 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 51 states have internal predecessors, (124), 14 states have call successors, (43), 10 states have call predecessors, (43), 14 states have return successors, (40), 20 states have call predecessors, (40), 12 states have call successors, (40) [2021-12-18 01:33:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:33:59,414 INFO L93 Difference]: Finished difference Result 190 states and 224 transitions. [2021-12-18 01:33:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-18 01:33:59,418 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 51 states have internal predecessors, (124), 14 states have call successors, (43), 10 states have call predecessors, (43), 14 states have return successors, (40), 20 states have call predecessors, (40), 12 states have call successors, (40) Word has length 139 [2021-12-18 01:33:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:33:59,420 INFO L225 Difference]: With dead ends: 190 [2021-12-18 01:33:59,420 INFO L226 Difference]: Without dead ends: 138 [2021-12-18 01:33:59,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 73.4s TimeCoverageRelationStatistics Valid=399, Invalid=10505, Unknown=16, NotChecked=0, Total=10920 [2021-12-18 01:33:59,422 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 191 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1132 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:33:59,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 3083 Invalid, 3795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2477 Invalid, 0 Unknown, 1132 Unchecked, 3.2s Time] [2021-12-18 01:33:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-18 01:33:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2021-12-18 01:33:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 88 states have internal predecessors, (95), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-18 01:33:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2021-12-18 01:33:59,431 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 139 [2021-12-18 01:33:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:33:59,431 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2021-12-18 01:33:59,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 51 states have internal predecessors, (124), 14 states have call successors, (43), 10 states have call predecessors, (43), 14 states have return successors, (40), 20 states have call predecessors, (40), 12 states have call successors, (40) [2021-12-18 01:33:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2021-12-18 01:33:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-18 01:33:59,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:33:59,433 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 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] [2021-12-18 01:33:59,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 01:33:59,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:33:59,659 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:33:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:33:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 775625794, now seen corresponding path program 7 times [2021-12-18 01:33:59,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:33:59,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892844662] [2021-12-18 01:33:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:59,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:33:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:33:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:33:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:33:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:33:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:33:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:33:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:33:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:33:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:33:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:34:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:34:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:34:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:34:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:34:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:34:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:34:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:34:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:34:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:34:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 01:34:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 01:34:00,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:34:00,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892844662] [2021-12-18 01:34:00,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892844662] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:34:00,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770951122] [2021-12-18 01:34:00,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-18 01:34:00,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:34:00,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:34:00,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:34:00,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 01:34:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:00,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 3438 conjuncts, 157 conjunts are in the unsatisfiable core [2021-12-18 01:34:00,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:34:01,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:34:46,680 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1327_96| Int) (v_ArrVal_6295 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_97| Int) (v_ArrVal_6293 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_94| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_95| Int) (v_ArrVal_6316 Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| Int) (v_ArrVal_6303 Int) (v_ArrVal_6312 Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|))) (and (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_94| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_95|) (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|)) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_94|) (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616)) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_95| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_96|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_96| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_97|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| 18446744073709551616) |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|) v_ArrVal_6293) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_94| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6295) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_95| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6303) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_96| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6312) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_97| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6316))) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|)))) is different from true [2021-12-18 01:35:01,036 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1327_96| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_97| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_94| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1327_95| Int) (v_ArrVal_6316 Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| Int) (v_ArrVal_6303 Int) (v_ArrVal_6312 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1336_45| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1336_46| Int) (v_ArrVal_6321 Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| Int) (v_ArrVal_6320 Int) (v_ArrVal_6295 Int) (v_ArrVal_6293 Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|))) (and (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_94| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_95|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| 18446744073709551616) |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|) v_ArrVal_6293) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_94| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6295) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_95| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6303) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_96| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6312) (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_97| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_6316) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1336_45|) v_ArrVal_6320) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1336_46|) v_ArrVal_6321))) (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|)) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_94|) (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67| (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616)) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1336_45| 8) |v_#Ultimate.C_memcpy_#t~loopctr1336_46|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_95| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_96|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1327_96| 1) |v_#Ultimate.C_memcpy_#t~loopctr1327_97|) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1327_93_67|) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1336_45|)))) is different from true [2021-12-18 01:35:01,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:01,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:02,041 INFO L354 Elim1Store]: treesize reduction 268, result has 25.6 percent of original size [2021-12-18 01:35:02,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 122 [2021-12-18 01:35:02,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 83 [2021-12-18 01:35:02,337 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-18 01:35:02,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 82 [2021-12-18 01:35:02,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:35:02,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 11 [2021-12-18 01:35:13,501 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-12-18 01:35:13,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 204 treesize of output 129 [2021-12-18 01:35:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 12 proven. 41 refuted. 7 times theorem prover too weak. 74 trivial. 7 not checked. [2021-12-18 01:35:15,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:35:42,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770951122] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:35:42,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:35:42,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 42] total 54 [2021-12-18 01:35:42,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482558504] [2021-12-18 01:35:42,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:35:42,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-18 01:35:42,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:35:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-18 01:35:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=3477, Unknown=32, NotChecked=238, Total=3906 [2021-12-18 01:35:42,653 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand has 54 states, 48 states have (on average 2.375) internal successors, (114), 38 states have internal predecessors, (114), 10 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (34), 13 states have call predecessors, (34), 8 states have call successors, (34) [2021-12-18 01:36:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:36:42,294 INFO L93 Difference]: Finished difference Result 189 states and 222 transitions. [2021-12-18 01:36:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 01:36:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 48 states have (on average 2.375) internal successors, (114), 38 states have internal predecessors, (114), 10 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (34), 13 states have call predecessors, (34), 8 states have call successors, (34) Word has length 139 [2021-12-18 01:36:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:36:42,296 INFO L225 Difference]: With dead ends: 189 [2021-12-18 01:36:42,296 INFO L226 Difference]: Without dead ends: 136 [2021-12-18 01:36:42,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 144.6s TimeCoverageRelationStatistics Valid=352, Invalid=7437, Unknown=51, NotChecked=350, Total=8190 [2021-12-18 01:36:42,297 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 198 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1335 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:36:42,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 1874 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2118 Invalid, 0 Unknown, 1335 Unchecked, 2.3s Time] [2021-12-18 01:36:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-18 01:36:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2021-12-18 01:36:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 88 states have internal predecessors, (94), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-18 01:36:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2021-12-18 01:36:42,306 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 139 [2021-12-18 01:36:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:36:42,306 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2021-12-18 01:36:42,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 48 states have (on average 2.375) internal successors, (114), 38 states have internal predecessors, (114), 10 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (34), 13 states have call predecessors, (34), 8 states have call successors, (34) [2021-12-18 01:36:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2021-12-18 01:36:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-18 01:36:42,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:36:42,308 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:36:42,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 01:36:42,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-18 01:36:42,523 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:36:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:36:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1913440102, now seen corresponding path program 8 times [2021-12-18 01:36:42,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:36:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717085933] [2021-12-18 01:36:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:36:42,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:36:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:36:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:36:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:36:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:36:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:36:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:36:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:36:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:36:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:36:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:36:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:36:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:36:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:36:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:36:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 01:36:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 01:36:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 01:36:43,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:36:43,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717085933] [2021-12-18 01:36:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717085933] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:36:43,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794122842] [2021-12-18 01:36:43,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:36:43,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:36:43,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:36:43,766 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) [2021-12-18 01:36:43,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 01:36:44,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:36:44,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:36:44,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 3671 conjuncts, 131 conjunts are in the unsatisfiable core [2021-12-18 01:36:44,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:36:58,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 Killed by 15