/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_reserve_relative_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:41:04,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:41:04,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:41:04,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:41:04,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:41:04,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:41:04,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:41:04,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:41:04,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:41:04,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:41:04,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:41:04,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:41:04,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:41:04,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:41:04,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:41:04,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:41:04,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:41:04,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:41:04,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:41:04,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:41:04,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:41:04,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:41:04,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:41:04,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:41:04,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:41:04,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:41:04,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:41:04,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:41:04,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:41:04,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:41:04,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:41:04,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:41:04,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:41:04,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:41:04,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:41:04,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:41:04,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:41:04,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:41:04,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:41:04,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:41:04,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:41:04,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:41:04,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:41:04,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:41:04,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:41:04,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:41:04,962 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:41:04,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:41:04,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:41:04,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:41:04,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:41:04,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:41:04,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:41:04,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:41:04,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:41:04,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:41:04,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:41:04,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:41:04,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:41:04,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:41:04,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:41:04,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:41:04,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:41:04,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:41:04,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:41:04,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:41:04,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:41:04,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:41:05,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:41:05,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:41:05,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:41:05,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:41:05,415 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:41:05,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2020-12-22 11:41:05,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74492f9f3/1059866eab13449eb3d6b39bf0af38ab/FLAG115f887ac [2020-12-22 11:41:06,709 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:41:06,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2020-12-22 11:41:06,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74492f9f3/1059866eab13449eb3d6b39bf0af38ab/FLAG115f887ac [2020-12-22 11:41:07,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74492f9f3/1059866eab13449eb3d6b39bf0af38ab [2020-12-22 11:41:07,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:41:07,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:41:07,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:41:07,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:41:07,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:41:07,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:41:07" (1/1) ... [2020-12-22 11:41:07,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716a3c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:07, skipping insertion in model container [2020-12-22 11:41:07,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:41:07" (1/1) ... [2020-12-22 11:41:07,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:41:07,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:41:07,724 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_reserve_relative_harness.i[4503,4516] [2020-12-22 11:41:07,737 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_reserve_relative_harness.i[4563,4576] [2020-12-22 11:41:07,766 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:41:07,780 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:41:08,836 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,837 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,838 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,838 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,843 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,880 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,881 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,890 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:08,890 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:09,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:41:09,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:41:09,404 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:41:09,406 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:41:09,421 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:41:09,424 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:41:09,425 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:41:09,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:41:09,429 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:41:09,430 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:41:09,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:41:09,638 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:09,639 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:09,765 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:09,767 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:09,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:41:09,928 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:41:09,952 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_reserve_relative_harness.i[4503,4516] [2020-12-22 11:41:09,953 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_reserve_relative_harness.i[4563,4576] [2020-12-22 11:41:09,962 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:41:09,964 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:41:10,041 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,043 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,044 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,045 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,046 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,057 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,062 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,064 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,065 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:41:10,146 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:41:10,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:41:10,148 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:41:10,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:41:10,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:41:10,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:41:10,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:41:10,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:41:10,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:41:10,194 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:41:10,214 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,214 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,293 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,293 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:41:11,478 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:41:11,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11 WrapperNode [2020-12-22 11:41:11,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:41:11,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:41:11,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:41:11,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:41:11,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:41:11,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:41:11,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:41:11,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:41:11,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:11,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (1/1) ... [2020-12-22 11:41:12,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:41:12,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:41:12,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:41:12,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:41:12,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (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 11:41:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:41:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:41:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:41:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:41:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:41:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:41:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2020-12-22 11:41:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:41:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:41:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:41:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:41:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:41:22,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:41:22,435 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2020-12-22 11:41:22,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:41:22 BoogieIcfgContainer [2020-12-22 11:41:22,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:41:22,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:41:22,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:41:22,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:41:22,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:41:07" (1/3) ... [2020-12-22 11:41:22,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe845c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:41:22, skipping insertion in model container [2020-12-22 11:41:22,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:11" (2/3) ... [2020-12-22 11:41:22,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe845c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:41:22, skipping insertion in model container [2020-12-22 11:41:22,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:41:22" (3/3) ... [2020-12-22 11:41:22,447 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2020-12-22 11:41:22,457 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:41:22,464 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 11:41:22,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 11:41:22,536 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:41:22,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:41:22,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:41:22,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:41:22,537 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:41:22,537 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:41:22,537 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:41:22,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:41:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-12-22 11:41:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 11:41:22,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:22,572 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] [2020-12-22 11:41:22,573 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:22,579 INFO L82 PathProgramCache]: Analyzing trace with hash -473287577, now seen corresponding path program 1 times [2020-12-22 11:41:22,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:22,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897953171] [2020-12-22 11:41:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:23,515 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 11:41:23,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897953171] [2020-12-22 11:41:23,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:23,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:41:23,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628489543] [2020-12-22 11:41:23,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:41:23,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:23,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:41:23,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:41:23,544 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 2 states. [2020-12-22 11:41:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:23,615 INFO L93 Difference]: Finished difference Result 457 states and 647 transitions. [2020-12-22 11:41:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:41:23,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-12-22 11:41:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:23,633 INFO L225 Difference]: With dead ends: 457 [2020-12-22 11:41:23,634 INFO L226 Difference]: Without dead ends: 227 [2020-12-22 11:41:23,639 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 11:41:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-22 11:41:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-12-22 11:41:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-22 11:41:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2020-12-22 11:41:23,703 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 22 [2020-12-22 11:41:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:23,704 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2020-12-22 11:41:23,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:41:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2020-12-22 11:41:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 11:41:23,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:23,706 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] [2020-12-22 11:41:23,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:41:23,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2061635479, now seen corresponding path program 1 times [2020-12-22 11:41:23,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:23,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725013124] [2020-12-22 11:41:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:24,065 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 11:41:24,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725013124] [2020-12-22 11:41:24,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:24,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:24,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599210797] [2020-12-22 11:41:24,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:24,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:24,071 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand 4 states. [2020-12-22 11:41:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:24,215 INFO L93 Difference]: Finished difference Result 431 states and 569 transitions. [2020-12-22 11:41:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:41:24,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-22 11:41:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:24,218 INFO L225 Difference]: With dead ends: 431 [2020-12-22 11:41:24,218 INFO L226 Difference]: Without dead ends: 227 [2020-12-22 11:41:24,221 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 11:41:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-22 11:41:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-12-22 11:41:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-22 11:41:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 298 transitions. [2020-12-22 11:41:24,240 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 298 transitions. Word has length 22 [2020-12-22 11:41:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:24,241 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 298 transitions. [2020-12-22 11:41:24,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 298 transitions. [2020-12-22 11:41:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 11:41:24,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:24,242 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] [2020-12-22 11:41:24,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:41:24,243 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:24,244 INFO L82 PathProgramCache]: Analyzing trace with hash 926477308, now seen corresponding path program 1 times [2020-12-22 11:41:24,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:24,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105680652] [2020-12-22 11:41:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:24,561 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 11:41:24,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105680652] [2020-12-22 11:41:24,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:24,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:24,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234565649] [2020-12-22 11:41:24,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:24,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:24,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:24,564 INFO L87 Difference]: Start difference. First operand 227 states and 298 transitions. Second operand 4 states. [2020-12-22 11:41:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:24,879 INFO L93 Difference]: Finished difference Result 616 states and 827 transitions. [2020-12-22 11:41:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:24,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-22 11:41:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:24,883 INFO L225 Difference]: With dead ends: 616 [2020-12-22 11:41:24,883 INFO L226 Difference]: Without dead ends: 403 [2020-12-22 11:41:24,884 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 11:41:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-22 11:41:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 243. [2020-12-22 11:41:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-22 11:41:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 314 transitions. [2020-12-22 11:41:24,904 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 314 transitions. Word has length 28 [2020-12-22 11:41:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:24,904 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 314 transitions. [2020-12-22 11:41:24,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 314 transitions. [2020-12-22 11:41:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 11:41:24,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:24,906 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] [2020-12-22 11:41:24,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:41:24,906 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash -94591046, now seen corresponding path program 1 times [2020-12-22 11:41:24,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:24,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198582309] [2020-12-22 11:41:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:25,234 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 11:41:25,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198582309] [2020-12-22 11:41:25,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:25,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:25,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024976638] [2020-12-22 11:41:25,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:25,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:25,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:25,237 INFO L87 Difference]: Start difference. First operand 243 states and 314 transitions. Second operand 4 states. [2020-12-22 11:41:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:25,606 INFO L93 Difference]: Finished difference Result 542 states and 709 transitions. [2020-12-22 11:41:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:25,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-22 11:41:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:25,610 INFO L225 Difference]: With dead ends: 542 [2020-12-22 11:41:25,610 INFO L226 Difference]: Without dead ends: 323 [2020-12-22 11:41:25,612 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 11:41:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-22 11:41:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 259. [2020-12-22 11:41:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-12-22 11:41:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 330 transitions. [2020-12-22 11:41:25,641 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 330 transitions. Word has length 28 [2020-12-22 11:41:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:25,642 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 330 transitions. [2020-12-22 11:41:25,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 330 transitions. [2020-12-22 11:41:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 11:41:25,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:25,645 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] [2020-12-22 11:41:25,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:41:25,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1374345282, now seen corresponding path program 1 times [2020-12-22 11:41:25,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:25,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473047775] [2020-12-22 11:41:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:26,420 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 11:41:26,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473047775] [2020-12-22 11:41:26,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:26,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:26,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708476538] [2020-12-22 11:41:26,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:26,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:26,424 INFO L87 Difference]: Start difference. First operand 259 states and 330 transitions. Second operand 5 states. [2020-12-22 11:41:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:26,571 INFO L93 Difference]: Finished difference Result 530 states and 672 transitions. [2020-12-22 11:41:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:41:26,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-12-22 11:41:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:26,575 INFO L225 Difference]: With dead ends: 530 [2020-12-22 11:41:26,575 INFO L226 Difference]: Without dead ends: 497 [2020-12-22 11:41:26,576 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 11:41:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-12-22 11:41:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 261. [2020-12-22 11:41:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 11:41:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 332 transitions. [2020-12-22 11:41:26,588 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 332 transitions. Word has length 28 [2020-12-22 11:41:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:26,589 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 332 transitions. [2020-12-22 11:41:26,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 332 transitions. [2020-12-22 11:41:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 11:41:26,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:26,591 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] [2020-12-22 11:41:26,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:41:26,591 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1363870332, now seen corresponding path program 1 times [2020-12-22 11:41:26,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:26,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651265641] [2020-12-22 11:41:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:27,146 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 11:41:27,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651265641] [2020-12-22 11:41:27,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:27,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:41:27,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089852885] [2020-12-22 11:41:27,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:41:27,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:27,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:41:27,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:41:27,155 INFO L87 Difference]: Start difference. First operand 261 states and 332 transitions. Second operand 6 states. [2020-12-22 11:41:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:27,785 INFO L93 Difference]: Finished difference Result 412 states and 506 transitions. [2020-12-22 11:41:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:41:27,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-12-22 11:41:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:27,788 INFO L225 Difference]: With dead ends: 412 [2020-12-22 11:41:27,788 INFO L226 Difference]: Without dead ends: 395 [2020-12-22 11:41:27,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 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 11:41:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-22 11:41:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 275. [2020-12-22 11:41:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-22 11:41:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 345 transitions. [2020-12-22 11:41:27,806 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 345 transitions. Word has length 38 [2020-12-22 11:41:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:27,809 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 345 transitions. [2020-12-22 11:41:27,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:41:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 345 transitions. [2020-12-22 11:41:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 11:41:27,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:27,876 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] [2020-12-22 11:41:27,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:41:27,878 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1721724466, now seen corresponding path program 1 times [2020-12-22 11:41:27,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:27,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681855922] [2020-12-22 11:41:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:28,307 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 11:41:28,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681855922] [2020-12-22 11:41:28,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:28,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:28,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140861683] [2020-12-22 11:41:28,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:28,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:28,310 INFO L87 Difference]: Start difference. First operand 275 states and 345 transitions. Second operand 5 states. [2020-12-22 11:41:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:28,470 INFO L93 Difference]: Finished difference Result 496 states and 621 transitions. [2020-12-22 11:41:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:28,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-22 11:41:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:28,473 INFO L225 Difference]: With dead ends: 496 [2020-12-22 11:41:28,473 INFO L226 Difference]: Without dead ends: 275 [2020-12-22 11:41:28,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-22 11:41:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-12-22 11:41:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-22 11:41:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 343 transitions. [2020-12-22 11:41:28,486 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 343 transitions. Word has length 40 [2020-12-22 11:41:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:28,487 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 343 transitions. [2020-12-22 11:41:28,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 343 transitions. [2020-12-22 11:41:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 11:41:28,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:28,488 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:28,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:41:28,488 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:28,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:28,489 INFO L82 PathProgramCache]: Analyzing trace with hash -378295308, now seen corresponding path program 1 times [2020-12-22 11:41:28,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:28,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822899956] [2020-12-22 11:41:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:29,036 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 11:41:29,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822899956] [2020-12-22 11:41:29,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:29,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:29,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982054455] [2020-12-22 11:41:29,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:29,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:29,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:29,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:29,041 INFO L87 Difference]: Start difference. First operand 275 states and 343 transitions. Second operand 5 states. [2020-12-22 11:41:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:34,291 INFO L93 Difference]: Finished difference Result 782 states and 969 transitions. [2020-12-22 11:41:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:34,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 11:41:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:34,295 INFO L225 Difference]: With dead ends: 782 [2020-12-22 11:41:34,295 INFO L226 Difference]: Without dead ends: 528 [2020-12-22 11:41:34,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:41:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-12-22 11:41:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 299. [2020-12-22 11:41:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 11:41:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 367 transitions. [2020-12-22 11:41:34,313 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 367 transitions. Word has length 42 [2020-12-22 11:41:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:34,313 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 367 transitions. [2020-12-22 11:41:34,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:34,313 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 367 transitions. [2020-12-22 11:41:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 11:41:34,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:34,314 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] [2020-12-22 11:41:34,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:41:34,315 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash 301763062, now seen corresponding path program 1 times [2020-12-22 11:41:34,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:34,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092975961] [2020-12-22 11:41:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:40,729 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 11:41:40,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092975961] [2020-12-22 11:41:40,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:40,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 11:41:40,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263557067] [2020-12-22 11:41:40,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 11:41:40,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:40,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 11:41:40,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:41:40,734 INFO L87 Difference]: Start difference. First operand 299 states and 367 transitions. Second operand 12 states. [2020-12-22 11:41:51,507 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 11:41:51,678 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 11:41:52,686 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 11:41:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:55,521 INFO L93 Difference]: Finished difference Result 847 states and 1037 transitions. [2020-12-22 11:41:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 11:41:55,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-12-22 11:41:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:55,527 INFO L225 Difference]: With dead ends: 847 [2020-12-22 11:41:55,527 INFO L226 Difference]: Without dead ends: 833 [2020-12-22 11:41:55,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2020-12-22 11:41:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-12-22 11:41:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 510. [2020-12-22 11:41:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-12-22 11:41:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 634 transitions. [2020-12-22 11:41:55,557 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 634 transitions. Word has length 42 [2020-12-22 11:41:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:55,558 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 634 transitions. [2020-12-22 11:41:55,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 11:41:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 634 transitions. [2020-12-22 11:41:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 11:41:55,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:55,559 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] [2020-12-22 11:41:55,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:41:55,559 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:55,560 INFO L82 PathProgramCache]: Analyzing trace with hash 559928500, now seen corresponding path program 1 times [2020-12-22 11:41:55,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:55,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256112420] [2020-12-22 11:41:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:56,337 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 11:41:56,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256112420] [2020-12-22 11:41:56,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:56,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:41:56,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618884047] [2020-12-22 11:41:56,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:41:56,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:41:56,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:41:56,346 INFO L87 Difference]: Start difference. First operand 510 states and 634 transitions. Second operand 9 states. [2020-12-22 11:42:04,990 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 21 [2020-12-22 11:42:05,624 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-22 11:42:05,920 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2020-12-22 11:42:06,095 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2020-12-22 11:42:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:09,764 INFO L93 Difference]: Finished difference Result 1088 states and 1352 transitions. [2020-12-22 11:42:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 11:42:09,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-12-22 11:42:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:09,773 INFO L225 Difference]: With dead ends: 1088 [2020-12-22 11:42:09,773 INFO L226 Difference]: Without dead ends: 1072 [2020-12-22 11:42:09,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-22 11:42:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-12-22 11:42:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 763. [2020-12-22 11:42:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-12-22 11:42:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 956 transitions. [2020-12-22 11:42:09,818 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 956 transitions. Word has length 42 [2020-12-22 11:42:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:09,818 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 956 transitions. [2020-12-22 11:42:09,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:42:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 956 transitions. [2020-12-22 11:42:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 11:42:09,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:09,820 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] [2020-12-22 11:42:09,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:42:09,821 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1131247120, now seen corresponding path program 1 times [2020-12-22 11:42:09,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:09,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167053705] [2020-12-22 11:42:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:10,589 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 11:42:10,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167053705] [2020-12-22 11:42:10,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:10,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:42:10,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269385251] [2020-12-22 11:42:10,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:42:10,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:42:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:42:10,592 INFO L87 Difference]: Start difference. First operand 763 states and 956 transitions. Second operand 10 states. [2020-12-22 11:42:17,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:17,630 INFO L93 Difference]: Finished difference Result 821 states and 1013 transitions. [2020-12-22 11:42:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 11:42:17,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-22 11:42:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:17,635 INFO L225 Difference]: With dead ends: 821 [2020-12-22 11:42:17,636 INFO L226 Difference]: Without dead ends: 814 [2020-12-22 11:42:17,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-12-22 11:42:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-12-22 11:42:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 770. [2020-12-22 11:42:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-12-22 11:42:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 964 transitions. [2020-12-22 11:42:17,676 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 964 transitions. Word has length 42 [2020-12-22 11:42:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:17,676 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 964 transitions. [2020-12-22 11:42:17,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:42:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 964 transitions. [2020-12-22 11:42:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 11:42:17,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:17,679 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] [2020-12-22 11:42:17,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:42:17,679 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:17,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash -451188750, now seen corresponding path program 1 times [2020-12-22 11:42:17,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:17,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264561102] [2020-12-22 11:42:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:18,087 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 11:42:18,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264561102] [2020-12-22 11:42:18,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:18,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:42:18,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682011530] [2020-12-22 11:42:18,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:42:18,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:42:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:42:18,090 INFO L87 Difference]: Start difference. First operand 770 states and 964 transitions. Second operand 5 states. [2020-12-22 11:42:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:21,429 INFO L93 Difference]: Finished difference Result 1865 states and 2335 transitions. [2020-12-22 11:42:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:42:21,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 11:42:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:21,439 INFO L225 Difference]: With dead ends: 1865 [2020-12-22 11:42:21,440 INFO L226 Difference]: Without dead ends: 1175 [2020-12-22 11:42:21,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:42:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-12-22 11:42:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 770. [2020-12-22 11:42:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-12-22 11:42:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 944 transitions. [2020-12-22 11:42:21,497 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 944 transitions. Word has length 42 [2020-12-22 11:42:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:21,497 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 944 transitions. [2020-12-22 11:42:21,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:42:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 944 transitions. [2020-12-22 11:42:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 11:42:21,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:21,499 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] [2020-12-22 11:42:21,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:42:21,499 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash 615350763, now seen corresponding path program 1 times [2020-12-22 11:42:21,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:21,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164743793] [2020-12-22 11:42:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:22,151 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 11:42:22,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164743793] [2020-12-22 11:42:22,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:22,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:42:22,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825351673] [2020-12-22 11:42:22,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:42:22,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:22,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:42:22,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:42:22,155 INFO L87 Difference]: Start difference. First operand 770 states and 944 transitions. Second operand 8 states. [2020-12-22 11:42:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:24,092 INFO L93 Difference]: Finished difference Result 1206 states and 1452 transitions. [2020-12-22 11:42:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 11:42:24,093 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-22 11:42:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:24,099 INFO L225 Difference]: With dead ends: 1206 [2020-12-22 11:42:24,099 INFO L226 Difference]: Without dead ends: 1185 [2020-12-22 11:42:24,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-12-22 11:42:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-12-22 11:42:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 792. [2020-12-22 11:42:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-12-22 11:42:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 965 transitions. [2020-12-22 11:42:24,143 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 965 transitions. Word has length 44 [2020-12-22 11:42:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:24,144 INFO L481 AbstractCegarLoop]: Abstraction has 792 states and 965 transitions. [2020-12-22 11:42:24,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:42:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 965 transitions. [2020-12-22 11:42:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 11:42:24,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:24,145 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] [2020-12-22 11:42:24,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:42:24,145 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash -193995863, now seen corresponding path program 1 times [2020-12-22 11:42:24,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:24,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612265906] [2020-12-22 11:42:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:24,983 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 11:42:24,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612265906] [2020-12-22 11:42:24,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:24,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 11:42:24,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250585090] [2020-12-22 11:42:24,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 11:42:24,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:24,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 11:42:24,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:42:24,986 INFO L87 Difference]: Start difference. First operand 792 states and 965 transitions. Second operand 11 states. [2020-12-22 11:42:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:35,070 INFO L93 Difference]: Finished difference Result 2488 states and 2984 transitions. [2020-12-22 11:42:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 11:42:35,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-12-22 11:42:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:35,081 INFO L225 Difference]: With dead ends: 2488 [2020-12-22 11:42:35,081 INFO L226 Difference]: Without dead ends: 1711 [2020-12-22 11:42:35,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2020-12-22 11:42:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2020-12-22 11:42:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1052. [2020-12-22 11:42:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-22 11:42:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1288 transitions. [2020-12-22 11:42:35,144 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1288 transitions. Word has length 44 [2020-12-22 11:42:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:35,144 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1288 transitions. [2020-12-22 11:42:35,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 11:42:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1288 transitions. [2020-12-22 11:42:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 11:42:35,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:35,146 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 11:42:35,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 11:42:35,146 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:35,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1878621098, now seen corresponding path program 1 times [2020-12-22 11:42:35,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:35,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168096816] [2020-12-22 11:42:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:35,663 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 11:42:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168096816] [2020-12-22 11:42:35,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:35,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:42:35,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173834073] [2020-12-22 11:42:35,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:42:35,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:35,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:42:35,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:42:35,669 INFO L87 Difference]: Start difference. First operand 1052 states and 1288 transitions. Second operand 7 states. [2020-12-22 11:42:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:36,831 INFO L93 Difference]: Finished difference Result 1992 states and 2418 transitions. [2020-12-22 11:42:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:42:36,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-12-22 11:42:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:36,839 INFO L225 Difference]: With dead ends: 1992 [2020-12-22 11:42:36,840 INFO L226 Difference]: Without dead ends: 1466 [2020-12-22 11:42:36,849 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 11:42:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-12-22 11:42:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1052. [2020-12-22 11:42:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-22 11:42:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1285 transitions. [2020-12-22 11:42:36,926 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1285 transitions. Word has length 46 [2020-12-22 11:42:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:36,926 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1285 transitions. [2020-12-22 11:42:36,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:42:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1285 transitions. [2020-12-22 11:42:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 11:42:36,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:36,928 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] [2020-12-22 11:42:36,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 11:42:36,928 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:36,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1567331845, now seen corresponding path program 1 times [2020-12-22 11:42:36,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:36,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3766936] [2020-12-22 11:42:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:41,686 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 11:42:41,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3766936] [2020-12-22 11:42:41,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:41,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:42:41,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729488354] [2020-12-22 11:42:41,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:42:41,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:41,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:42:41,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:42:41,691 INFO L87 Difference]: Start difference. First operand 1052 states and 1285 transitions. Second operand 9 states. [2020-12-22 11:42:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:45,863 INFO L93 Difference]: Finished difference Result 1430 states and 1704 transitions. [2020-12-22 11:42:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 11:42:45,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-12-22 11:42:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:45,872 INFO L225 Difference]: With dead ends: 1430 [2020-12-22 11:42:45,873 INFO L226 Difference]: Without dead ends: 1416 [2020-12-22 11:42:45,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:42:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-12-22 11:42:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1231. [2020-12-22 11:42:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-12-22 11:42:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1509 transitions. [2020-12-22 11:42:45,939 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1509 transitions. Word has length 48 [2020-12-22 11:42:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:45,940 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1509 transitions. [2020-12-22 11:42:45,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:42:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1509 transitions. [2020-12-22 11:42:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 11:42:45,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:45,941 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] [2020-12-22 11:42:45,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 11:42:45,941 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:45,942 INFO L82 PathProgramCache]: Analyzing trace with hash 134321663, now seen corresponding path program 1 times [2020-12-22 11:42:45,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:45,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894132600] [2020-12-22 11:42:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:46,745 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 11:42:46,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894132600] [2020-12-22 11:42:46,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:46,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:42:46,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035735356] [2020-12-22 11:42:46,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:42:46,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:46,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:42:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:42:46,747 INFO L87 Difference]: Start difference. First operand 1231 states and 1509 transitions. Second operand 9 states. [2020-12-22 11:42:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:53,913 INFO L93 Difference]: Finished difference Result 1520 states and 1848 transitions. [2020-12-22 11:42:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 11:42:53,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-12-22 11:42:53,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:53,922 INFO L225 Difference]: With dead ends: 1520 [2020-12-22 11:42:53,922 INFO L226 Difference]: Without dead ends: 1506 [2020-12-22 11:42:53,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-22 11:42:53,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-12-22 11:42:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1459. [2020-12-22 11:42:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-12-22 11:42:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1790 transitions. [2020-12-22 11:42:54,000 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1790 transitions. Word has length 48 [2020-12-22 11:42:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:54,000 INFO L481 AbstractCegarLoop]: Abstraction has 1459 states and 1790 transitions. [2020-12-22 11:42:54,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:42:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1790 transitions. [2020-12-22 11:42:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 11:42:54,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:54,001 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] [2020-12-22 11:42:54,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 11:42:54,002 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash 156953917, now seen corresponding path program 1 times [2020-12-22 11:42:54,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:54,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292643615] [2020-12-22 11:42:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:59,747 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-12-22 11:42:59,915 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-12-22 11:43:00,358 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 11:43:00,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292643615] [2020-12-22 11:43:00,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:00,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 11:43:00,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512252622] [2020-12-22 11:43:00,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 11:43:00,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:00,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 11:43:00,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:43:00,360 INFO L87 Difference]: Start difference. First operand 1459 states and 1790 transitions. Second operand 12 states. [2020-12-22 11:43:07,025 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 11:43:07,277 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 11:43:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:11,623 INFO L93 Difference]: Finished difference Result 1520 states and 1847 transitions. [2020-12-22 11:43:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 11:43:11,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-12-22 11:43:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:11,630 INFO L225 Difference]: With dead ends: 1520 [2020-12-22 11:43:11,630 INFO L226 Difference]: Without dead ends: 1513 [2020-12-22 11:43:11,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-12-22 11:43:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-12-22 11:43:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1233. [2020-12-22 11:43:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-12-22 11:43:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1510 transitions. [2020-12-22 11:43:11,697 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1510 transitions. Word has length 48 [2020-12-22 11:43:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:11,697 INFO L481 AbstractCegarLoop]: Abstraction has 1233 states and 1510 transitions. [2020-12-22 11:43:11,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 11:43:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1510 transitions. [2020-12-22 11:43:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 11:43:11,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:11,698 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] [2020-12-22 11:43:11,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 11:43:11,699 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1376295925, now seen corresponding path program 1 times [2020-12-22 11:43:11,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:11,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246422784] [2020-12-22 11:43:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:11,909 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 11:43:11,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246422784] [2020-12-22 11:43:11,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:11,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:11,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832780408] [2020-12-22 11:43:11,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:11,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:11,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:11,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:11,912 INFO L87 Difference]: Start difference. First operand 1233 states and 1510 transitions. Second operand 4 states. [2020-12-22 11:43:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:12,491 INFO L93 Difference]: Finished difference Result 2005 states and 2433 transitions. [2020-12-22 11:43:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:43:12,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 11:43:12,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:12,497 INFO L225 Difference]: With dead ends: 2005 [2020-12-22 11:43:12,497 INFO L226 Difference]: Without dead ends: 856 [2020-12-22 11:43:12,499 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 11:43:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-12-22 11:43:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 754. [2020-12-22 11:43:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2020-12-22 11:43:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 906 transitions. [2020-12-22 11:43:12,539 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 906 transitions. Word has length 48 [2020-12-22 11:43:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:12,539 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 906 transitions. [2020-12-22 11:43:12,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 906 transitions. [2020-12-22 11:43:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 11:43:12,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:12,540 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] [2020-12-22 11:43:12,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 11:43:12,541 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash 541859832, now seen corresponding path program 1 times [2020-12-22 11:43:12,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:12,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171290860] [2020-12-22 11:43:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:13,275 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 11:43:13,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171290860] [2020-12-22 11:43:13,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:13,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:43:13,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112943430] [2020-12-22 11:43:13,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:43:13,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:43:13,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:43:13,278 INFO L87 Difference]: Start difference. First operand 754 states and 906 transitions. Second operand 10 states. [2020-12-22 11:43:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:24,600 INFO L93 Difference]: Finished difference Result 1199 states and 1395 transitions. [2020-12-22 11:43:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 11:43:24,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-12-22 11:43:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:24,609 INFO L225 Difference]: With dead ends: 1199 [2020-12-22 11:43:24,609 INFO L226 Difference]: Without dead ends: 1161 [2020-12-22 11:43:24,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-12-22 11:43:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-12-22 11:43:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 840. [2020-12-22 11:43:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-12-22 11:43:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1010 transitions. [2020-12-22 11:43:24,666 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1010 transitions. Word has length 50 [2020-12-22 11:43:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:24,666 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 1010 transitions. [2020-12-22 11:43:24,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:43:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1010 transitions. [2020-12-22 11:43:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 11:43:24,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:24,672 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] [2020-12-22 11:43:24,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 11:43:24,673 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 816619446, now seen corresponding path program 1 times [2020-12-22 11:43:24,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:24,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226236859] [2020-12-22 11:43:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:29,123 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 11:43:29,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226236859] [2020-12-22 11:43:29,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:29,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 11:43:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661566293] [2020-12-22 11:43:29,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 11:43:29,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:29,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 11:43:29,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:43:29,125 INFO L87 Difference]: Start difference. First operand 840 states and 1010 transitions. Second operand 12 states. [2020-12-22 11:43:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:41,727 INFO L93 Difference]: Finished difference Result 1238 states and 1465 transitions. [2020-12-22 11:43:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 11:43:41,729 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-12-22 11:43:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:41,734 INFO L225 Difference]: With dead ends: 1238 [2020-12-22 11:43:41,734 INFO L226 Difference]: Without dead ends: 1175 [2020-12-22 11:43:41,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=418, Invalid=1388, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 11:43:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-12-22 11:43:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 612. [2020-12-22 11:43:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-12-22 11:43:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 733 transitions. [2020-12-22 11:43:41,775 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 733 transitions. Word has length 50 [2020-12-22 11:43:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:41,775 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 733 transitions. [2020-12-22 11:43:41,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 11:43:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 733 transitions. [2020-12-22 11:43:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 11:43:41,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:41,777 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] [2020-12-22 11:43:41,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 11:43:41,777 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:41,778 INFO L82 PathProgramCache]: Analyzing trace with hash 38277487, now seen corresponding path program 1 times [2020-12-22 11:43:41,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:41,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544268397] [2020-12-22 11:43:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:42,187 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 11:43:42,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544268397] [2020-12-22 11:43:42,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:42,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:43:42,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55811772] [2020-12-22 11:43:42,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:43:42,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:42,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:43:42,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:43:42,190 INFO L87 Difference]: Start difference. First operand 612 states and 733 transitions. Second operand 6 states. [2020-12-22 11:43:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:42,729 INFO L93 Difference]: Finished difference Result 868 states and 1017 transitions. [2020-12-22 11:43:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 11:43:42,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-22 11:43:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:42,737 INFO L225 Difference]: With dead ends: 868 [2020-12-22 11:43:42,737 INFO L226 Difference]: Without dead ends: 802 [2020-12-22 11:43:42,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:43:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-12-22 11:43:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 594. [2020-12-22 11:43:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-12-22 11:43:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 705 transitions. [2020-12-22 11:43:42,779 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 705 transitions. Word has length 50 [2020-12-22 11:43:42,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:42,780 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 705 transitions. [2020-12-22 11:43:42,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:43:42,780 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 705 transitions. [2020-12-22 11:43:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 11:43:42,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:42,781 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] [2020-12-22 11:43:42,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 11:43:42,782 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:42,782 INFO L82 PathProgramCache]: Analyzing trace with hash -472391190, now seen corresponding path program 1 times [2020-12-22 11:43:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:42,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032705102] [2020-12-22 11:43:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:43,069 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 11:43:43,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032705102] [2020-12-22 11:43:43,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:43,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:43:43,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126974347] [2020-12-22 11:43:43,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:43:43,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:43,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:43:43,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:43,072 INFO L87 Difference]: Start difference. First operand 594 states and 705 transitions. Second operand 5 states. [2020-12-22 11:43:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:43,251 INFO L93 Difference]: Finished difference Result 750 states and 879 transitions. [2020-12-22 11:43:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:43:43,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 11:43:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:43,257 INFO L225 Difference]: With dead ends: 750 [2020-12-22 11:43:43,257 INFO L226 Difference]: Without dead ends: 688 [2020-12-22 11:43:43,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:43:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-12-22 11:43:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 562. [2020-12-22 11:43:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-12-22 11:43:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 666 transitions. [2020-12-22 11:43:43,294 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 666 transitions. Word has length 56 [2020-12-22 11:43:43,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:43,294 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 666 transitions. [2020-12-22 11:43:43,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:43:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 666 transitions. [2020-12-22 11:43:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 11:43:43,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:43,296 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] [2020-12-22 11:43:43,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 11:43:43,296 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:43,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash -66851802, now seen corresponding path program 1 times [2020-12-22 11:43:43,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:43,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436744352] [2020-12-22 11:43:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:43,644 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 11:43:43,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436744352] [2020-12-22 11:43:43,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:43,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:43:43,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816212549] [2020-12-22 11:43:43,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:43:43,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:43,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:43:43,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:43:43,646 INFO L87 Difference]: Start difference. First operand 562 states and 666 transitions. Second operand 6 states. [2020-12-22 11:43:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:44,142 INFO L93 Difference]: Finished difference Result 904 states and 1074 transitions. [2020-12-22 11:43:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:43:44,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-12-22 11:43:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:44,147 INFO L225 Difference]: With dead ends: 904 [2020-12-22 11:43:44,147 INFO L226 Difference]: Without dead ends: 562 [2020-12-22 11:43:44,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:43:44,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-12-22 11:43:44,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-12-22 11:43:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-12-22 11:43:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 657 transitions. [2020-12-22 11:43:44,181 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 657 transitions. Word has length 57 [2020-12-22 11:43:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:44,181 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 657 transitions. [2020-12-22 11:43:44,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:43:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 657 transitions. [2020-12-22 11:43:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 11:43:44,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:44,182 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 11:43:44,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 11:43:44,183 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:44,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1969167590, now seen corresponding path program 1 times [2020-12-22 11:43:44,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:44,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720802612] [2020-12-22 11:43:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:44,818 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 11:43:44,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720802612] [2020-12-22 11:43:44,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:44,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:43:44,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307810936] [2020-12-22 11:43:44,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:43:44,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:43:44,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:43:44,820 INFO L87 Difference]: Start difference. First operand 562 states and 657 transitions. Second operand 10 states. [2020-12-22 11:43:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:54,331 INFO L93 Difference]: Finished difference Result 1119 states and 1299 transitions. [2020-12-22 11:43:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 11:43:54,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-12-22 11:43:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:54,339 INFO L225 Difference]: With dead ends: 1119 [2020-12-22 11:43:54,339 INFO L226 Difference]: Without dead ends: 691 [2020-12-22 11:43:54,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-12-22 11:43:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-12-22 11:43:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 564. [2020-12-22 11:43:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-12-22 11:43:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 659 transitions. [2020-12-22 11:43:54,377 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 659 transitions. Word has length 58 [2020-12-22 11:43:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:54,378 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 659 transitions. [2020-12-22 11:43:54,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:43:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 659 transitions. [2020-12-22 11:43:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 11:43:54,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:54,379 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 11:43:54,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 11:43:54,379 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1711002152, now seen corresponding path program 1 times [2020-12-22 11:43:54,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:54,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095618243] [2020-12-22 11:43:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:58,488 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 11:43:58,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095618243] [2020-12-22 11:43:58,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:58,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 11:43:58,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258964518] [2020-12-22 11:43:58,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 11:43:58,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:58,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 11:43:58,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:43:58,490 INFO L87 Difference]: Start difference. First operand 564 states and 659 transitions. Second operand 11 states. [2020-12-22 11:44:03,481 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-22 11:44:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:07,473 INFO L93 Difference]: Finished difference Result 1182 states and 1360 transitions. [2020-12-22 11:44:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 11:44:07,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-12-22 11:44:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:07,479 INFO L225 Difference]: With dead ends: 1182 [2020-12-22 11:44:07,479 INFO L226 Difference]: Without dead ends: 752 [2020-12-22 11:44:07,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-12-22 11:44:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-12-22 11:44:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 559. [2020-12-22 11:44:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-12-22 11:44:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 652 transitions. [2020-12-22 11:44:07,518 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 652 transitions. Word has length 58 [2020-12-22 11:44:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:07,519 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 652 transitions. [2020-12-22 11:44:07,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 11:44:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 652 transitions. [2020-12-22 11:44:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 11:44:07,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:07,520 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 11:44:07,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 11:44:07,520 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash 277991970, now seen corresponding path program 1 times [2020-12-22 11:44:07,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:07,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061764352] [2020-12-22 11:44:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:08,281 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 11:44:08,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061764352] [2020-12-22 11:44:08,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:44:08,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 11:44:08,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493890793] [2020-12-22 11:44:08,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 11:44:08,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 11:44:08,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:44:08,283 INFO L87 Difference]: Start difference. First operand 559 states and 652 transitions. Second operand 11 states. [2020-12-22 11:44:17,339 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2020-12-22 11:44:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:21,436 INFO L93 Difference]: Finished difference Result 1093 states and 1267 transitions. [2020-12-22 11:44:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 11:44:21,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-12-22 11:44:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:21,446 INFO L225 Difference]: With dead ends: 1093 [2020-12-22 11:44:21,446 INFO L226 Difference]: Without dead ends: 677 [2020-12-22 11:44:21,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-12-22 11:44:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-12-22 11:44:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 566. [2020-12-22 11:44:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-12-22 11:44:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 658 transitions. [2020-12-22 11:44:21,485 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 658 transitions. Word has length 58 [2020-12-22 11:44:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:21,486 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 658 transitions. [2020-12-22 11:44:21,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 11:44:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 658 transitions. [2020-12-22 11:44:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 11:44:21,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:21,487 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] [2020-12-22 11:44:21,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 11:44:21,488 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1170055963, now seen corresponding path program 1 times [2020-12-22 11:44:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:21,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873592046] [2020-12-22 11:44:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:22,725 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 11:44:22,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873592046] [2020-12-22 11:44:22,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:44:22,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 11:44:22,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684162269] [2020-12-22 11:44:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 11:44:22,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 11:44:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:44:22,727 INFO L87 Difference]: Start difference. First operand 566 states and 658 transitions. Second operand 12 states. [2020-12-22 11:44:36,217 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-22 11:44:36,509 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2020-12-22 11:44:39,753 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-22 11:44:40,434 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-22 11:44:41,070 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-22 11:44:41,593 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-22 11:44:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:45,186 INFO L93 Difference]: Finished difference Result 1202 states and 1374 transitions. [2020-12-22 11:44:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 11:44:45,192 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-12-22 11:44:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:45,195 INFO L225 Difference]: With dead ends: 1202 [2020-12-22 11:44:45,195 INFO L226 Difference]: Without dead ends: 775 [2020-12-22 11:44:45,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2020-12-22 11:44:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-12-22 11:44:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 557. [2020-12-22 11:44:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-12-22 11:44:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 647 transitions. [2020-12-22 11:44:45,233 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 647 transitions. Word has length 60 [2020-12-22 11:44:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:45,234 INFO L481 AbstractCegarLoop]: Abstraction has 557 states and 647 transitions. [2020-12-22 11:44:45,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 11:44:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 647 transitions. [2020-12-22 11:44:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 11:44:45,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:45,235 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] [2020-12-22 11:44:45,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 11:44:45,236 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1289082123, now seen corresponding path program 1 times [2020-12-22 11:44:45,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:45,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340879541] [2020-12-22 11:44:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:46,311 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 11:44:46,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340879541] [2020-12-22 11:44:46,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:44:46,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 11:44:46,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831030846] [2020-12-22 11:44:46,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 11:44:46,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 11:44:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:44:46,313 INFO L87 Difference]: Start difference. First operand 557 states and 647 transitions. Second operand 11 states.