/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:40:22,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:40:22,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:40:22,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:40:22,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:40:22,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:40:22,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:40:22,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:40:22,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:40:22,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:40:22,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:40:22,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:40:22,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:40:22,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:40:22,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:40:22,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:40:22,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:40:22,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:40:22,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:40:22,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:40:22,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:40:22,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:40:22,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:40:22,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:40:22,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:40:22,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:40:22,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:40:22,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:40:22,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:40:22,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:40:22,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:40:22,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:40:22,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:40:22,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:40:22,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:40:22,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:40:22,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:40:22,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:40:22,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:40:22,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:40:22,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:40:22,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:40:22,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:40:22,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:40:22,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:40:22,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:40:22,665 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:40:22,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:40:22,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:40:22,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:40:22,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:40:22,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:40:22,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:40:22,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:40:22,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:40:22,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:40:22,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:40:22,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:40:22,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:40:22,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:40:22,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:40:22,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:40:22,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:40:22,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:40:22,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:40:22,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:40:22,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:40:22,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:40:23,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:40:23,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:40:23,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:40:23,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:40:23,122 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:40:23,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2020-12-22 11:40:23,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144e943aa/4d77313bab464cbcbc5f6f243a496242/FLAG68369b80c [2020-12-22 11:40:24,436 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:40:24,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2020-12-22 11:40:24,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144e943aa/4d77313bab464cbcbc5f6f243a496242/FLAG68369b80c [2020-12-22 11:40:24,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144e943aa/4d77313bab464cbcbc5f6f243a496242 [2020-12-22 11:40:24,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:40:24,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:40:24,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:40:24,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:40:24,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:40:24,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:40:24" (1/1) ... [2020-12-22 11:40:24,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32eedbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:24, skipping insertion in model container [2020-12-22 11:40:24,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:40:24" (1/1) ... [2020-12-22 11:40:24,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:40:25,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:40:25,295 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2020-12-22 11:40:25,304 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2020-12-22 11:40:25,332 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:40:25,339 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:40:26,418 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,419 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,420 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,421 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,422 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,439 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,440 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,442 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,443 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:26,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:40:26,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:40:26,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:40:26,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:40:26,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:40:26,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:40:26,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:40:26,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:40:26,919 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:40:26,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:40:27,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:40:27,181 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,181 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:40:27,337 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:40:27,359 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2020-12-22 11:40:27,360 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2020-12-22 11:40:27,362 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:40:27,363 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:40:27,440 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,441 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,441 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,442 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,442 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,501 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,503 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,505 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,505 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:40:27,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:40:27,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:40:27,552 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:40:27,553 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:40:27,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:40:27,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:40:27,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:40:27,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:40:27,556 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:40:27,580 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:40:27,687 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,690 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:40:27,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:40:28,776 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:40:28,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28 WrapperNode [2020-12-22 11:40:28,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:40:28,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:40:28,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:40:28,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:40:28,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:28,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:40:29,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:40:29,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:40:29,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:40:29,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... [2020-12-22 11:40:29,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:40:29,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:40:29,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:40:29,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:40:29,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:40:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:40:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:40:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:40:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:40:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:40:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:40:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:40:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:40:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:40:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:40:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:40:39,118 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:40:39,119 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2020-12-22 11:40:39,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:40:39 BoogieIcfgContainer [2020-12-22 11:40:39,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:40:39,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:40:39,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:40:39,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:40:39,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:40:24" (1/3) ... [2020-12-22 11:40:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:40:39, skipping insertion in model container [2020-12-22 11:40:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:40:28" (2/3) ... [2020-12-22 11:40:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:40:39, skipping insertion in model container [2020-12-22 11:40:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:40:39" (3/3) ... [2020-12-22 11:40:39,131 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2020-12-22 11:40:39,138 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:40:39,155 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 11:40:39,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 11:40:39,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:40:39,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:40:39,222 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:40:39,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:40:39,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:40:39,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:40:39,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:40:39,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:40:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-12-22 11:40:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 11:40:39,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:39,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:39,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:39,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1283718026, now seen corresponding path program 1 times [2020-12-22 11:40:39,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:39,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205421713] [2020-12-22 11:40:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:40,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205421713] [2020-12-22 11:40:40,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:40,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:40:40,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629039372] [2020-12-22 11:40:40,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:40:40,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:40,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:40:40,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:40:40,311 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 2 states. [2020-12-22 11:40:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:40,375 INFO L93 Difference]: Finished difference Result 318 states and 445 transitions. [2020-12-22 11:40:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:40:40,379 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2020-12-22 11:40:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:40,397 INFO L225 Difference]: With dead ends: 318 [2020-12-22 11:40:40,398 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 11:40:40,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:40:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 11:40:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-12-22 11:40:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-22 11:40:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 204 transitions. [2020-12-22 11:40:40,485 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 204 transitions. Word has length 34 [2020-12-22 11:40:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:40,485 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 204 transitions. [2020-12-22 11:40:40,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:40:40,486 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 204 transitions. [2020-12-22 11:40:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 11:40:40,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:40,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:40,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:40:40,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:40,489 INFO L82 PathProgramCache]: Analyzing trace with hash 27354892, now seen corresponding path program 1 times [2020-12-22 11:40:40,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:40,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98600144] [2020-12-22 11:40:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:40,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98600144] [2020-12-22 11:40:40,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:40,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:40:40,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780563606] [2020-12-22 11:40:40,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:40:40,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:40:40,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:40:40,974 INFO L87 Difference]: Start difference. First operand 156 states and 204 transitions. Second operand 4 states. [2020-12-22 11:40:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:41,167 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2020-12-22 11:40:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:40:41,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 11:40:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:41,175 INFO L225 Difference]: With dead ends: 286 [2020-12-22 11:40:41,175 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 11:40:41,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:40:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 11:40:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-12-22 11:40:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-22 11:40:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2020-12-22 11:40:41,202 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 34 [2020-12-22 11:40:41,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:41,202 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2020-12-22 11:40:41,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:40:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2020-12-22 11:40:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 11:40:41,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:41,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:41,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:40:41,208 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2136977490, now seen corresponding path program 1 times [2020-12-22 11:40:41,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:41,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286206460] [2020-12-22 11:40:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:41,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286206460] [2020-12-22 11:40:41,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:41,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:40:41,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537105003] [2020-12-22 11:40:41,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:40:41,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:41,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:40:41,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:40:41,632 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand 4 states. [2020-12-22 11:40:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:41,897 INFO L93 Difference]: Finished difference Result 347 states and 456 transitions. [2020-12-22 11:40:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:40:41,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 11:40:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:41,899 INFO L225 Difference]: With dead ends: 347 [2020-12-22 11:40:41,899 INFO L226 Difference]: Without dead ends: 216 [2020-12-22 11:40:41,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:40:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-22 11:40:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 168. [2020-12-22 11:40:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-22 11:40:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 214 transitions. [2020-12-22 11:40:41,913 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 214 transitions. Word has length 46 [2020-12-22 11:40:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:41,913 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 214 transitions. [2020-12-22 11:40:41,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:40:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 214 transitions. [2020-12-22 11:40:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 11:40:41,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:41,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:41,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:40:41,916 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:41,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1456389932, now seen corresponding path program 1 times [2020-12-22 11:40:41,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:41,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615797035] [2020-12-22 11:40:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:42,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615797035] [2020-12-22 11:40:42,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:42,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:40:42,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373541256] [2020-12-22 11:40:42,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:40:42,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:42,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:40:42,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:40:42,368 INFO L87 Difference]: Start difference. First operand 168 states and 214 transitions. Second operand 5 states. [2020-12-22 11:40:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:42,513 INFO L93 Difference]: Finished difference Result 270 states and 342 transitions. [2020-12-22 11:40:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:40:42,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 11:40:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:42,516 INFO L225 Difference]: With dead ends: 270 [2020-12-22 11:40:42,516 INFO L226 Difference]: Without dead ends: 168 [2020-12-22 11:40:42,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:40:42,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-22 11:40:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-12-22 11:40:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-22 11:40:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2020-12-22 11:40:42,549 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 211 transitions. Word has length 46 [2020-12-22 11:40:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:42,549 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 211 transitions. [2020-12-22 11:40:42,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:40:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 211 transitions. [2020-12-22 11:40:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 11:40:42,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:42,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:42,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:40:42,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:42,556 INFO L82 PathProgramCache]: Analyzing trace with hash 921784791, now seen corresponding path program 1 times [2020-12-22 11:40:42,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:42,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74015399] [2020-12-22 11:40:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:43,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74015399] [2020-12-22 11:40:43,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:43,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:40:43,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047486784] [2020-12-22 11:40:43,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:40:43,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:43,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:40:43,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:40:43,056 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. Second operand 6 states. [2020-12-22 11:40:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:43,260 INFO L93 Difference]: Finished difference Result 241 states and 298 transitions. [2020-12-22 11:40:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:40:43,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 11:40:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:43,262 INFO L225 Difference]: With dead ends: 241 [2020-12-22 11:40:43,263 INFO L226 Difference]: Without dead ends: 168 [2020-12-22 11:40:43,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:40:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-22 11:40:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-12-22 11:40:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-22 11:40:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2020-12-22 11:40:43,270 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 52 [2020-12-22 11:40:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:43,270 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2020-12-22 11:40:43,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:40:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2020-12-22 11:40:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 11:40:43,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:43,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:43,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:40:43,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:43,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:43,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1091747988, now seen corresponding path program 1 times [2020-12-22 11:40:43,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:43,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481831228] [2020-12-22 11:40:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:44,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481831228] [2020-12-22 11:40:44,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:44,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:40:44,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674109647] [2020-12-22 11:40:44,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:40:44,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:44,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:40:44,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:40:44,082 INFO L87 Difference]: Start difference. First operand 168 states and 210 transitions. Second operand 6 states. [2020-12-22 11:40:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:44,479 INFO L93 Difference]: Finished difference Result 303 states and 368 transitions. [2020-12-22 11:40:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:40:44,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-12-22 11:40:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:44,482 INFO L225 Difference]: With dead ends: 303 [2020-12-22 11:40:44,482 INFO L226 Difference]: Without dead ends: 299 [2020-12-22 11:40:44,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:40:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-22 11:40:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 176. [2020-12-22 11:40:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-22 11:40:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2020-12-22 11:40:44,491 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 58 [2020-12-22 11:40:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:44,491 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2020-12-22 11:40:44,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:40:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2020-12-22 11:40:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 11:40:44,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:44,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:44,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:40:44,494 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:44,494 INFO L82 PathProgramCache]: Analyzing trace with hash 948784038, now seen corresponding path program 1 times [2020-12-22 11:40:44,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:44,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323296447] [2020-12-22 11:40:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:50,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323296447] [2020-12-22 11:40:50,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:50,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:40:50,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734133071] [2020-12-22 11:40:50,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:40:50,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:50,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:40:50,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:40:50,653 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand 10 states. [2020-12-22 11:40:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:40:56,284 INFO L93 Difference]: Finished difference Result 355 states and 442 transitions. [2020-12-22 11:40:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 11:40:56,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-12-22 11:40:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:40:56,287 INFO L225 Difference]: With dead ends: 355 [2020-12-22 11:40:56,287 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 11:40:56,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-12-22 11:40:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 11:40:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2020-12-22 11:40:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-22 11:40:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 209 transitions. [2020-12-22 11:40:56,296 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 209 transitions. Word has length 62 [2020-12-22 11:40:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:40:56,296 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 209 transitions. [2020-12-22 11:40:56,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:40:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 209 transitions. [2020-12-22 11:40:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 11:40:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:40:56,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:40:56,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:40:56,298 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:40:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:40:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 276207726, now seen corresponding path program 1 times [2020-12-22 11:40:56,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:40:56,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510137487] [2020-12-22 11:40:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:40:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:40:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:40:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510137487] [2020-12-22 11:40:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:40:57,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:40:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098924081] [2020-12-22 11:40:57,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:40:57,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:40:57,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:40:57,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:40:57,277 INFO L87 Difference]: Start difference. First operand 170 states and 209 transitions. Second operand 10 states. [2020-12-22 11:41:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:08,904 INFO L93 Difference]: Finished difference Result 517 states and 654 transitions. [2020-12-22 11:41:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 11:41:08,905 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-12-22 11:41:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:08,908 INFO L225 Difference]: With dead ends: 517 [2020-12-22 11:41:08,908 INFO L226 Difference]: Without dead ends: 364 [2020-12-22 11:41:08,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-12-22 11:41:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-22 11:41:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 197. [2020-12-22 11:41:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-12-22 11:41:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 240 transitions. [2020-12-22 11:41:08,920 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 240 transitions. Word has length 74 [2020-12-22 11:41:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:08,920 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 240 transitions. [2020-12-22 11:41:08,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:41:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 240 transitions. [2020-12-22 11:41:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 11:41:08,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:08,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:08,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:41:08,922 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:08,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1773180116, now seen corresponding path program 1 times [2020-12-22 11:41:08,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:08,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382082110] [2020-12-22 11:41:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:09,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382082110] [2020-12-22 11:41:09,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:09,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:41:09,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309767580] [2020-12-22 11:41:09,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:41:09,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:09,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:41:09,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:41:09,714 INFO L87 Difference]: Start difference. First operand 197 states and 240 transitions. Second operand 7 states. [2020-12-22 11:41:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:10,652 INFO L93 Difference]: Finished difference Result 409 states and 485 transitions. [2020-12-22 11:41:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:41:10,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-12-22 11:41:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:10,655 INFO L225 Difference]: With dead ends: 409 [2020-12-22 11:41:10,655 INFO L226 Difference]: Without dead ends: 230 [2020-12-22 11:41:10,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-12-22 11:41:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 197. [2020-12-22 11:41:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-12-22 11:41:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 235 transitions. [2020-12-22 11:41:10,667 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 235 transitions. Word has length 74 [2020-12-22 11:41:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:10,667 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 235 transitions. [2020-12-22 11:41:10,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:41:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 235 transitions. [2020-12-22 11:41:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 11:41:10,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:10,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:10,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:41:10,676 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash -773701009, now seen corresponding path program 1 times [2020-12-22 11:41:10,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:10,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525836534] [2020-12-22 11:41:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:10,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525836534] [2020-12-22 11:41:10,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:10,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:10,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718049045] [2020-12-22 11:41:10,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:10,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:10,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:10,965 INFO L87 Difference]: Start difference. First operand 197 states and 235 transitions. Second operand 4 states. [2020-12-22 11:41:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:11,276 INFO L93 Difference]: Finished difference Result 391 states and 464 transitions. [2020-12-22 11:41:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:11,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 11:41:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:11,278 INFO L225 Difference]: With dead ends: 391 [2020-12-22 11:41:11,279 INFO L226 Difference]: Without dead ends: 213 [2020-12-22 11:41:11,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-22 11:41:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 201. [2020-12-22 11:41:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-12-22 11:41:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 234 transitions. [2020-12-22 11:41:11,290 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 234 transitions. Word has length 80 [2020-12-22 11:41:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:11,291 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 234 transitions. [2020-12-22 11:41:11,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 234 transitions. [2020-12-22 11:41:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 11:41:11,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:11,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:11,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:41:11,293 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:11,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:11,293 INFO L82 PathProgramCache]: Analyzing trace with hash -264227919, now seen corresponding path program 1 times [2020-12-22 11:41:11,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:11,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796954882] [2020-12-22 11:41:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:12,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796954882] [2020-12-22 11:41:12,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:12,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:12,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146758949] [2020-12-22 11:41:12,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:12,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:12,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:12,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:12,005 INFO L87 Difference]: Start difference. First operand 201 states and 234 transitions. Second operand 5 states. [2020-12-22 11:41:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:14,847 INFO L93 Difference]: Finished difference Result 440 states and 505 transitions. [2020-12-22 11:41:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:14,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 11:41:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:14,850 INFO L225 Difference]: With dead ends: 440 [2020-12-22 11:41:14,850 INFO L226 Difference]: Without dead ends: 243 [2020-12-22 11:41:14,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:41:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-22 11:41:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 186. [2020-12-22 11:41:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-22 11:41:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 209 transitions. [2020-12-22 11:41:14,860 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 209 transitions. Word has length 80 [2020-12-22 11:41:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:14,860 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 209 transitions. [2020-12-22 11:41:14,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 209 transitions. [2020-12-22 11:41:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 11:41:14,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:14,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:14,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:41:14,862 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:14,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1332248587, now seen corresponding path program 1 times [2020-12-22 11:41:14,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:14,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038631289] [2020-12-22 11:41:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:15,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038631289] [2020-12-22 11:41:15,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:15,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:41:15,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251812844] [2020-12-22 11:41:15,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:41:15,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:15,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:41:15,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:15,895 INFO L87 Difference]: Start difference. First operand 186 states and 209 transitions. Second operand 10 states. [2020-12-22 11:41:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:31,349 INFO L93 Difference]: Finished difference Result 477 states and 536 transitions. [2020-12-22 11:41:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 11:41:31,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-12-22 11:41:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:31,354 INFO L225 Difference]: With dead ends: 477 [2020-12-22 11:41:31,354 INFO L226 Difference]: Without dead ends: 331 [2020-12-22 11:41:31,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-12-22 11:41:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-12-22 11:41:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 203. [2020-12-22 11:41:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 11:41:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 225 transitions. [2020-12-22 11:41:31,367 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 225 transitions. Word has length 80 [2020-12-22 11:41:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:31,368 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 225 transitions. [2020-12-22 11:41:31,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:41:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 225 transitions. [2020-12-22 11:41:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 11:41:31,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:31,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:31,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:41:31,369 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:31,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1580395081, now seen corresponding path program 1 times [2020-12-22 11:41:31,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:31,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607147193] [2020-12-22 11:41:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607147193] [2020-12-22 11:41:37,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:37,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:41:37,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915245611] [2020-12-22 11:41:37,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:41:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:41:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:41:37,335 INFO L87 Difference]: Start difference. First operand 203 states and 225 transitions. Second operand 9 states. [2020-12-22 11:41:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:42,248 INFO L93 Difference]: Finished difference Result 385 states and 433 transitions. [2020-12-22 11:41:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:41:42,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-12-22 11:41:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:42,251 INFO L225 Difference]: With dead ends: 385 [2020-12-22 11:41:42,252 INFO L226 Difference]: Without dead ends: 272 [2020-12-22 11:41:42,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 11:41:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-12-22 11:41:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 203. [2020-12-22 11:41:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 11:41:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 224 transitions. [2020-12-22 11:41:42,263 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 224 transitions. Word has length 80 [2020-12-22 11:41:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:42,264 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 224 transitions. [2020-12-22 11:41:42,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:41:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 224 transitions. [2020-12-22 11:41:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 11:41:42,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:42,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:42,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:41:42,265 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash 522395916, now seen corresponding path program 1 times [2020-12-22 11:41:42,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:42,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088495155] [2020-12-22 11:41:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:46,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088495155] [2020-12-22 11:41:46,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:46,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:41:46,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236660260] [2020-12-22 11:41:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:41:46,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:46,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:41:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:46,885 INFO L87 Difference]: Start difference. First operand 203 states and 224 transitions. Second operand 10 states. [2020-12-22 11:41:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:57,114 INFO L93 Difference]: Finished difference Result 389 states and 436 transitions. [2020-12-22 11:41:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 11:41:57,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-12-22 11:41:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:57,119 INFO L225 Difference]: With dead ends: 389 [2020-12-22 11:41:57,119 INFO L226 Difference]: Without dead ends: 272 [2020-12-22 11:41:57,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-12-22 11:41:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-12-22 11:41:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 203. [2020-12-22 11:41:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 11:41:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 223 transitions. [2020-12-22 11:41:57,130 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 223 transitions. Word has length 86 [2020-12-22 11:41:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:57,131 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 223 transitions. [2020-12-22 11:41:57,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:41:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 223 transitions. [2020-12-22 11:41:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 11:41:57,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:57,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:57,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 11:41:57,133 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash -604435538, now seen corresponding path program 1 times [2020-12-22 11:41:57,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:57,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552136473] [2020-12-22 11:41:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:57,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552136473] [2020-12-22 11:41:57,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:57,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:41:57,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859389703] [2020-12-22 11:41:57,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:41:57,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:57,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:41:57,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:41:57,675 INFO L87 Difference]: Start difference. First operand 203 states and 223 transitions. Second operand 3 states. [2020-12-22 11:41:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:57,718 INFO L93 Difference]: Finished difference Result 322 states and 358 transitions. [2020-12-22 11:41:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:41:57,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 11:41:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:57,722 INFO L225 Difference]: With dead ends: 322 [2020-12-22 11:41:57,723 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 11:41:57,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:41:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 11:41:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2020-12-22 11:41:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-12-22 11:41:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 224 transitions. [2020-12-22 11:41:57,739 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 224 transitions. Word has length 87 [2020-12-22 11:41:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:57,739 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 224 transitions. [2020-12-22 11:41:57,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:41:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 224 transitions. [2020-12-22 11:41:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 11:41:57,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:57,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:57,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 11:41:57,741 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:57,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2111945076, now seen corresponding path program 1 times [2020-12-22 11:41:57,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:57,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038471161] [2020-12-22 11:41:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:03,602 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2020-12-22 11:42:04,996 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2020-12-22 11:42:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:42:05,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038471161] [2020-12-22 11:42:05,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823457409] [2020-12-22 11:42:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:42:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:06,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 82 conjunts are in the unsatisfiable core [2020-12-22 11:42:06,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:42:07,578 INFO L382 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 [2020-12-22 11:42:07,580 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:07,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:42:07,613 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:42:07,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-22 11:42:09,009 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 11:42:09,013 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2020-12-22 11:42:09,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:09,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:42:09,050 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:42:09,051 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:21 [2020-12-22 11:42:09,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,512 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,531 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,570 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:09,608 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,638 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,664 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,688 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:09,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,772 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,774 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:09,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:09,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:09,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,966 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:09,975 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:09,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:09,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:10,063 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,093 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:10,104 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,113 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 11:42:10,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,139 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,160 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 11:42:10,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:10,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 11:42:10,218 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,235 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:10,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:10,304 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2020-12-22 11:42:10,308 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:10,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:10,350 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2020-12-22 11:42:10,353 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:10,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:10,392 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2020-12-22 11:42:10,396 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:10,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:10,429 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2020-12-22 11:42:10,432 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:11,281 WARN L197 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-22 11:42:11,283 INFO L625 ElimStorePlain]: treesize reduction 24, result has 88.8 percent of original size [2020-12-22 11:42:11,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-2 vars, End of recursive call: 16 dim-0 vars, and 4 xjuncts. [2020-12-22 11:42:11,347 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:231, output treesize:331 [2020-12-22 11:42:14,258 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2020-12-22 11:42:14,606 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:14,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:14,713 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2020-12-22 11:42:14,717 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:14,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:14,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:14,757 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-12-22 11:42:14,760 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:14,987 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 11:42:14,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:42:15,018 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 2 xjuncts. [2020-12-22 11:42:15,019 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:184, output treesize:176 [2020-12-22 11:42:15,541 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-22 11:42:16,251 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 11:42:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:42:16,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 11:42:16,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-12-22 11:42:16,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972258609] [2020-12-22 11:42:16,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 11:42:16,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 11:42:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=790, Unknown=1, NotChecked=0, Total=870 [2020-12-22 11:42:16,340 INFO L87 Difference]: Start difference. First operand 204 states and 224 transitions. Second operand 30 states. [2020-12-22 11:42:46,325 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2020-12-22 11:42:46,621 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 11:42:46,966 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 11:42:47,493 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-12-22 11:42:47,841 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-12-22 11:42:48,539 WARN L197 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-12-22 11:42:49,254 WARN L197 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-12-22 11:42:49,920 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-12-22 11:42:50,796 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-12-22 11:42:51,552 WARN L197 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-12-22 11:42:54,395 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 82 [2020-12-22 11:43:13,587 WARN L197 SmtUtils]: Spent 16.93 s on a formula simplification. DAG size of input: 157 DAG size of output: 110 [2020-12-22 11:43:29,114 WARN L197 SmtUtils]: Spent 12.99 s on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2020-12-22 11:44:05,449 WARN L197 SmtUtils]: Spent 32.14 s on a formula simplification. DAG size of input: 174 DAG size of output: 114