/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_reset_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:41:06,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:41:06,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:41:06,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:41:06,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:41:06,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:41:06,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:41:06,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:41:06,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:41:06,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:41:06,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:41:06,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:41:06,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:41:06,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:41:06,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:41:06,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:41:06,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:41:06,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:41:06,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:41:06,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:41:06,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:41:06,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:41:06,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:41:06,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:41:06,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:41:06,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:41:06,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:41:06,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:41:06,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:41:06,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:41:06,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:41:06,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:41:06,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:41:06,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:41:06,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:41:06,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:41:06,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:41:06,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:41:06,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:41:06,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:41:06,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:41:06,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:41:06,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:41:06,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:41:06,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:41:06,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:41:06,359 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:41:06,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:41:06,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:41:06,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:41:06,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:41:06,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:41:06,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:41:06,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:41:06,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:41:06,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:41:06,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:41:06,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:41:06,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:41:06,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:41:06,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:41:06,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:41:06,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:41:06,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:41:06,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:41:06,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:41:06,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:41:06,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:41:06,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:41:06,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:41:06,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:41:06,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:41:06,808 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:41:06,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2020-12-22 11:41:06,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa8e9817/de7ab3cd61f04ebd89461dd5cb50b3dd/FLAG1b3175ec6 [2020-12-22 11:41:08,067 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:41:08,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2020-12-22 11:41:08,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa8e9817/de7ab3cd61f04ebd89461dd5cb50b3dd/FLAG1b3175ec6 [2020-12-22 11:41:08,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa8e9817/de7ab3cd61f04ebd89461dd5cb50b3dd [2020-12-22 11:41:08,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:41:08,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:41:08,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:41:08,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:41:08,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:41:08,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:41:08" (1/1) ... [2020-12-22 11:41:08,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e541d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:08, skipping insertion in model container [2020-12-22 11:41:08,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:41:08" (1/1) ... [2020-12-22 11:41:08,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:41:08,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:41:08,988 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_reset_harness.i[4492,4505] [2020-12-22 11:41:08,998 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_reset_harness.i[4552,4565] [2020-12-22 11:41:09,031 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:41:09,040 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:41:10,382 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,387 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,388 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,389 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,394 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,427 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,428 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,430 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,431 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:10,962 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:41:10,965 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:41:10,970 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:41:10,972 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:41:10,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:41:10,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:41:10,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:41:10,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:41:10,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:41:10,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:41:11,212 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:41:11,350 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,350 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:41:11,534 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:41:11,573 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_reset_harness.i[4492,4505] [2020-12-22 11:41:11,574 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_reset_harness.i[4552,4565] [2020-12-22 11:41:11,580 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:41:11,581 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:41:11,671 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,672 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,674 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,676 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,677 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,700 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,701 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,704 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,710 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:41:11,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:41:11,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:41:11,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:41:11,793 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:41:11,793 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:41:11,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:41:11,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:41:11,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:41:11,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:41:11,842 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:41:12,030 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,031 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:41:13,126 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:41:13,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13 WrapperNode [2020-12-22 11:41:13,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:41:13,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:41:13,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:41:13,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:41:13,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:41:13,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:41:13,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:41:13,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:41:13,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:41:13,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:41:13,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:41:13,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:41:13,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (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 11:41:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:41:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:41:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:41:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:41:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:41:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:41:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:41:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:41:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:41:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:41:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:41:23,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:41:23,895 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2020-12-22 11:41:23,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:41:23 BoogieIcfgContainer [2020-12-22 11:41:23,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:41:23,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:41:23,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:41:23,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:41:23,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:41:08" (1/3) ... [2020-12-22 11:41:23,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c8e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:41:23, skipping insertion in model container [2020-12-22 11:41:23,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (2/3) ... [2020-12-22 11:41:23,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c8e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:41:23, skipping insertion in model container [2020-12-22 11:41:23,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:41:23" (3/3) ... [2020-12-22 11:41:23,911 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reset_harness.i [2020-12-22 11:41:23,922 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:41:23,931 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 11:41:23,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 11:41:23,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:41:23,997 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:41:23,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:41:23,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:41:23,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:41:23,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:41:23,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:41:23,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:41:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-12-22 11:41:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 11:41:24,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:24,048 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 11:41:24,049 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1062443937, now seen corresponding path program 1 times [2020-12-22 11:41:24,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:24,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826780474] [2020-12-22 11:41:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:24,951 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 11:41:24,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826780474] [2020-12-22 11:41:24,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:24,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:41:24,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732442595] [2020-12-22 11:41:24,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:41:24,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:24,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:41:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:41:24,982 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-12-22 11:41:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:25,041 INFO L93 Difference]: Finished difference Result 216 states and 295 transitions. [2020-12-22 11:41:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:41:25,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-12-22 11:41:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:25,061 INFO L225 Difference]: With dead ends: 216 [2020-12-22 11:41:25,061 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 11:41:25,067 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 11:41:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 11:41:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-22 11:41:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 11:41:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2020-12-22 11:41:25,141 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 22 [2020-12-22 11:41:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:25,142 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2020-12-22 11:41:25,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:41:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2020-12-22 11:41:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 11:41:25,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:25,147 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 11:41:25,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:41:25,147 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:25,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1987497567, now seen corresponding path program 1 times [2020-12-22 11:41:25,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:25,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943133003] [2020-12-22 11:41:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:25,706 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 11:41:25,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943133003] [2020-12-22 11:41:25,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:25,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:25,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879354973] [2020-12-22 11:41:25,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:25,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:25,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:25,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:25,723 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand 4 states. [2020-12-22 11:41:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:25,891 INFO L93 Difference]: Finished difference Result 180 states and 222 transitions. [2020-12-22 11:41:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:41:25,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-22 11:41:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:25,893 INFO L225 Difference]: With dead ends: 180 [2020-12-22 11:41:25,894 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 11:41:25,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 11:41:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-22 11:41:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 11:41:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2020-12-22 11:41:25,906 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 22 [2020-12-22 11:41:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:25,907 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2020-12-22 11:41:25,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2020-12-22 11:41:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 11:41:25,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:25,909 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 11:41:25,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:41:25,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:25,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1026351090, now seen corresponding path program 1 times [2020-12-22 11:41:25,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:25,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782530206] [2020-12-22 11:41:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:26,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782530206] [2020-12-22 11:41:26,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:26,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:26,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259841222] [2020-12-22 11:41:26,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:26,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:26,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:26,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:26,339 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand 4 states. [2020-12-22 11:41:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:26,507 INFO L93 Difference]: Finished difference Result 211 states and 264 transitions. [2020-12-22 11:41:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:26,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-22 11:41:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:26,509 INFO L225 Difference]: With dead ends: 211 [2020-12-22 11:41:26,510 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 11:41:26,511 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 11:41:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 11:41:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2020-12-22 11:41:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 11:41:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2020-12-22 11:41:26,525 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 28 [2020-12-22 11:41:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:26,525 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2020-12-22 11:41:26,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2020-12-22 11:41:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 11:41:26,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:26,527 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 11:41:26,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:41:26,528 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash -439545076, now seen corresponding path program 1 times [2020-12-22 11:41:26,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:26,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59630736] [2020-12-22 11:41:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:27,327 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 11:41:27,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59630736] [2020-12-22 11:41:27,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:27,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:27,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180109128] [2020-12-22 11:41:27,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:27,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:27,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:27,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:27,336 INFO L87 Difference]: Start difference. First operand 109 states and 133 transitions. Second operand 5 states. [2020-12-22 11:41:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:29,782 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2020-12-22 11:41:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:29,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-12-22 11:41:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:29,785 INFO L225 Difference]: With dead ends: 109 [2020-12-22 11:41:29,785 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 11:41:29,786 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 11:41:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 11:41:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-22 11:41:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 11:41:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2020-12-22 11:41:29,811 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 28 [2020-12-22 11:41:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:29,813 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2020-12-22 11:41:29,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2020-12-22 11:41:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 11:41:29,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:29,815 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] [2020-12-22 11:41:29,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:41:29,816 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:29,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1495890418, now seen corresponding path program 1 times [2020-12-22 11:41:29,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:29,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179248037] [2020-12-22 11:41:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:30,816 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 11:41:30,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179248037] [2020-12-22 11:41:30,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:30,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:41:30,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695053299] [2020-12-22 11:41:30,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:41:30,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:30,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:41:30,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:41:30,819 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand 6 states. [2020-12-22 11:41:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:35,422 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2020-12-22 11:41:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:35,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-12-22 11:41:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:35,425 INFO L225 Difference]: With dead ends: 137 [2020-12-22 11:41:35,425 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 11:41:35,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:35,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 11:41:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 112. [2020-12-22 11:41:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 11:41:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2020-12-22 11:41:35,435 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 30 [2020-12-22 11:41:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:35,435 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2020-12-22 11:41:35,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:41:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2020-12-22 11:41:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 11:41:35,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:35,437 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] [2020-12-22 11:41:35,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:41:35,438 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1263485360, now seen corresponding path program 1 times [2020-12-22 11:41:35,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:35,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814256909] [2020-12-22 11:41:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:36,366 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 11:41:36,445 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 11:41:36,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814256909] [2020-12-22 11:41:36,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:36,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:41:36,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259869000] [2020-12-22 11:41:36,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:41:36,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:36,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:41:36,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:41:36,448 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand 6 states. [2020-12-22 11:41:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:38,928 INFO L93 Difference]: Finished difference Result 135 states and 159 transitions. [2020-12-22 11:41:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:38,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-22 11:41:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:38,930 INFO L225 Difference]: With dead ends: 135 [2020-12-22 11:41:38,931 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 11:41:38,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 11:41:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-12-22 11:41:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 11:41:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-12-22 11:41:38,941 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 32 [2020-12-22 11:41:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:38,941 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-12-22 11:41:38,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:41:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-12-22 11:41:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 11:41:38,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:38,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:38,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:41:38,944 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1266180622, now seen corresponding path program 1 times [2020-12-22 11:41:38,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:38,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642651628] [2020-12-22 11:41:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:43,888 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 11:41:43,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642651628] [2020-12-22 11:41:43,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:43,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:41:43,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729404415] [2020-12-22 11:41:43,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:41:43,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:43,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:41:43,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:41:43,892 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 6 states. [2020-12-22 11:41:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:46,427 INFO L93 Difference]: Finished difference Result 133 states and 157 transitions. [2020-12-22 11:41:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:46,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-12-22 11:41:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:46,430 INFO L225 Difference]: With dead ends: 133 [2020-12-22 11:41:46,430 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 11:41:46,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 11:41:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2020-12-22 11:41:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 11:41:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2020-12-22 11:41:46,446 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 34 [2020-12-22 11:41:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:46,450 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2020-12-22 11:41:46,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:41:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2020-12-22 11:41:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 11:41:46,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:46,454 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] [2020-12-22 11:41:46,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:41:46,455 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:46,456 INFO L82 PathProgramCache]: Analyzing trace with hash -423727705, now seen corresponding path program 1 times [2020-12-22 11:41:46,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:46,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874649807] [2020-12-22 11:41:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:46,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874649807] [2020-12-22 11:41:46,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:46,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:41:46,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995486322] [2020-12-22 11:41:46,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:41:46,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:46,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:41:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:41:46,777 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand 7 states. [2020-12-22 11:41:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:46,946 INFO L93 Difference]: Finished difference Result 175 states and 208 transitions. [2020-12-22 11:41:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:46,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-22 11:41:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:46,949 INFO L225 Difference]: With dead ends: 175 [2020-12-22 11:41:46,949 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 11:41:46,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:41:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 11:41:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-22 11:41:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 11:41:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2020-12-22 11:41:46,969 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 36 [2020-12-22 11:41:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:46,969 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2020-12-22 11:41:46,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:41:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2020-12-22 11:41:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 11:41:46,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:46,977 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] [2020-12-22 11:41:46,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:41:46,978 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:46,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1985324549, now seen corresponding path program 1 times [2020-12-22 11:41:46,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:46,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592971300] [2020-12-22 11:41:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:48,147 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 11:41:48,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592971300] [2020-12-22 11:41:48,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:48,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:48,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040090212] [2020-12-22 11:41:48,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:48,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:48,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:48,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:48,150 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand 4 states. [2020-12-22 11:41:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:48,205 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2020-12-22 11:41:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:41:48,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 11:41:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:48,209 INFO L225 Difference]: With dead ends: 125 [2020-12-22 11:41:48,209 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 11:41:48,210 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 11:41:48,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 11:41:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-22 11:41:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 11:41:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2020-12-22 11:41:48,219 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 41 [2020-12-22 11:41:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:48,219 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2020-12-22 11:41:48,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2020-12-22 11:41:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 11:41:48,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:48,222 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 11:41:48,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:41:48,224 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:48,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1569295218, now seen corresponding path program 1 times [2020-12-22 11:41:48,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:48,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720474943] [2020-12-22 11:41:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:48,673 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 11:41:48,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720474943] [2020-12-22 11:41:48,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:48,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:41:48,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624549139] [2020-12-22 11:41:48,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:41:48,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:48,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:41:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:48,676 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand 8 states. [2020-12-22 11:41:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:48,911 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2020-12-22 11:41:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:41:48,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 11:41:48,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:48,913 INFO L225 Difference]: With dead ends: 137 [2020-12-22 11:41:48,913 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 11:41:48,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 11:41:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 11:41:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-22 11:41:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 11:41:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2020-12-22 11:41:48,921 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 42 [2020-12-22 11:41:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:48,921 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2020-12-22 11:41:48,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:41:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2020-12-22 11:41:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 11:41:48,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:48,923 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 11:41:48,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:41:48,923 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:48,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:48,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2099325991, now seen corresponding path program 1 times [2020-12-22 11:41:48,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:48,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688196069] [2020-12-22 11:41:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:49,395 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 11:41:49,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688196069] [2020-12-22 11:41:49,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:49,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:41:49,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517450506] [2020-12-22 11:41:49,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:41:49,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:49,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:41:49,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:41:49,398 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand 6 states. [2020-12-22 11:41:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:49,641 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2020-12-22 11:41:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:49,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-12-22 11:41:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:49,645 INFO L225 Difference]: With dead ends: 159 [2020-12-22 11:41:49,645 INFO L226 Difference]: Without dead ends: 157 [2020-12-22 11:41:49,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-22 11:41:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 111. [2020-12-22 11:41:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 11:41:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-12-22 11:41:49,653 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 48 [2020-12-22 11:41:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:49,654 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-12-22 11:41:49,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:41:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-12-22 11:41:49,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 11:41:49,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:49,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:49,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:41:49,655 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:49,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:49,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2070696161, now seen corresponding path program 1 times [2020-12-22 11:41:49,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:49,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471415279] [2020-12-22 11:41:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:50,168 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 11:41:50,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471415279] [2020-12-22 11:41:50,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:50,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:50,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565187766] [2020-12-22 11:41:50,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:50,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:50,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:50,173 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 5 states. [2020-12-22 11:41:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:52,606 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-12-22 11:41:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:41:52,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-22 11:41:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:52,608 INFO L225 Difference]: With dead ends: 150 [2020-12-22 11:41:52,608 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 11:41:52,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:41:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 11:41:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 113. [2020-12-22 11:41:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-22 11:41:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2020-12-22 11:41:52,618 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 52 [2020-12-22 11:41:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:52,618 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2020-12-22 11:41:52,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2020-12-22 11:41:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 11:41:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:52,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:41:52,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:41:52,620 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1390637791, now seen corresponding path program 1 times [2020-12-22 11:41:52,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:52,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625007820] [2020-12-22 11:41:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:41:57,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625007820] [2020-12-22 11:41:57,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:57,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:41:57,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156054249] [2020-12-22 11:41:57,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:41:57,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:57,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:41:57,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:57,136 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand 10 states. [2020-12-22 11:42:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:02,169 INFO L93 Difference]: Finished difference Result 215 states and 254 transitions. [2020-12-22 11:42:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 11:42:02,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-22 11:42:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:02,172 INFO L225 Difference]: With dead ends: 215 [2020-12-22 11:42:02,172 INFO L226 Difference]: Without dead ends: 129 [2020-12-22 11:42:02,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-12-22 11:42:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-22 11:42:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 109. [2020-12-22 11:42:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 11:42:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-12-22 11:42:02,226 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 52 [2020-12-22 11:42:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:02,226 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-12-22 11:42:02,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:42:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-12-22 11:42:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 11:42:02,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:02,227 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 11:42:02,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:42:02,228 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:02,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2120751859, now seen corresponding path program 1 times [2020-12-22 11:42:02,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:02,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730224456] [2020-12-22 11:42:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:03,074 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 11:42:03,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730224456] [2020-12-22 11:42:03,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:03,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 11:42:03,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358792740] [2020-12-22 11:42:03,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 11:42:03,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 11:42:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:42:03,078 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 11 states. [2020-12-22 11:42:13,809 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-22 11:42:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:15,287 INFO L93 Difference]: Finished difference Result 299 states and 363 transitions. [2020-12-22 11:42:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 11:42:15,288 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-12-22 11:42:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:15,290 INFO L225 Difference]: With dead ends: 299 [2020-12-22 11:42:15,290 INFO L226 Difference]: Without dead ends: 207 [2020-12-22 11:42:15,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-12-22 11:42:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-12-22 11:42:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 131. [2020-12-22 11:42:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-22 11:42:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2020-12-22 11:42:15,300 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 60 [2020-12-22 11:42:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:15,301 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2020-12-22 11:42:15,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 11:42:15,301 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2020-12-22 11:42:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 11:42:15,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:15,302 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 11:42:15,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 11:42:15,302 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash -788012043, now seen corresponding path program 1 times [2020-12-22 11:42:15,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:15,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604333642] [2020-12-22 11:42:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:15,944 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 11:42:15,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604333642] [2020-12-22 11:42:15,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:15,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:42:15,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040345003] [2020-12-22 11:42:15,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:42:15,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:15,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:42:15,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:42:15,947 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand 7 states. [2020-12-22 11:42:16,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:16,389 INFO L93 Difference]: Finished difference Result 266 states and 302 transitions. [2020-12-22 11:42:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:42:16,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-12-22 11:42:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:16,392 INFO L225 Difference]: With dead ends: 266 [2020-12-22 11:42:16,392 INFO L226 Difference]: Without dead ends: 163 [2020-12-22 11:42:16,393 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 11:42:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-22 11:42:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 131. [2020-12-22 11:42:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-22 11:42:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-12-22 11:42:16,411 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 60 [2020-12-22 11:42:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:16,411 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-12-22 11:42:16,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:42:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-12-22 11:42:16,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 11:42:16,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:16,442 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 11:42:16,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 11:42:16,442 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:16,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:16,446 INFO L82 PathProgramCache]: Analyzing trace with hash -905963297, now seen corresponding path program 1 times [2020-12-22 11:42:16,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:16,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52701433] [2020-12-22 11:42:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:17,028 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 11:42:17,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52701433] [2020-12-22 11:42:17,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:17,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:42:17,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200553082] [2020-12-22 11:42:17,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:42:17,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:42:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:42:17,034 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 5 states. [2020-12-22 11:42:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:21,764 INFO L93 Difference]: Finished difference Result 333 states and 380 transitions. [2020-12-22 11:42:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:42:21,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 11:42:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:21,767 INFO L225 Difference]: With dead ends: 333 [2020-12-22 11:42:21,767 INFO L226 Difference]: Without dead ends: 227 [2020-12-22 11:42:21,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 11:42:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-22 11:42:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-12-22 11:42:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 11:42:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 161 transitions. [2020-12-22 11:42:21,777 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 161 transitions. Word has length 64 [2020-12-22 11:42:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:21,777 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 161 transitions. [2020-12-22 11:42:21,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:42:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 161 transitions. [2020-12-22 11:42:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 11:42:21,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:21,779 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 11:42:21,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 11:42:21,779 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:21,780 INFO L82 PathProgramCache]: Analyzing trace with hash 512836315, now seen corresponding path program 1 times [2020-12-22 11:42:21,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:21,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595273331] [2020-12-22 11:42:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:22,010 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 11:42:22,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595273331] [2020-12-22 11:42:22,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:22,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:42:22,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521901227] [2020-12-22 11:42:22,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:42:22,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:42:22,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:42:22,013 INFO L87 Difference]: Start difference. First operand 142 states and 161 transitions. Second operand 4 states. [2020-12-22 11:42:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:22,160 INFO L93 Difference]: Finished difference Result 246 states and 278 transitions. [2020-12-22 11:42:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:42:22,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 11:42:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:22,163 INFO L225 Difference]: With dead ends: 246 [2020-12-22 11:42:22,164 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 11:42:22,164 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 11:42:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 11:42:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2020-12-22 11:42:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 11:42:22,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-12-22 11:42:22,177 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 64 [2020-12-22 11:42:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:22,177 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-12-22 11:42:22,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:42:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-12-22 11:42:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 11:42:22,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:22,184 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 11:42:22,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 11:42:22,184 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1288031331, now seen corresponding path program 1 times [2020-12-22 11:42:22,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:22,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321900065] [2020-12-22 11:42:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:27,965 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 11:42:27,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321900065] [2020-12-22 11:42:27,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:27,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:42:27,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608650945] [2020-12-22 11:42:27,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:42:27,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:27,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:42:27,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:42:27,968 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 10 states. [2020-12-22 11:42:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:35,022 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2020-12-22 11:42:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:42:35,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-12-22 11:42:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:35,025 INFO L225 Difference]: With dead ends: 201 [2020-12-22 11:42:35,026 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 11:42:35,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 11:42:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 11:42:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 122. [2020-12-22 11:42:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 11:42:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-12-22 11:42:35,036 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 64 [2020-12-22 11:42:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:35,036 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-12-22 11:42:35,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:42:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-12-22 11:42:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 11:42:35,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:35,037 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 11:42:35,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 11:42:35,038 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:35,038 INFO L82 PathProgramCache]: Analyzing trace with hash 535079519, now seen corresponding path program 1 times [2020-12-22 11:42:35,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:35,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135600103] [2020-12-22 11:42:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:35,589 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 11:42:35,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135600103] [2020-12-22 11:42:35,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:35,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:42:35,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80647081] [2020-12-22 11:42:35,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:42:35,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:35,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:42:35,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:42:35,594 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 5 states. [2020-12-22 11:42:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:38,104 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-12-22 11:42:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:42:38,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 11:42:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:38,108 INFO L225 Difference]: With dead ends: 165 [2020-12-22 11:42:38,108 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 11:42:38,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 11:42:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 11:42:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2020-12-22 11:42:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 11:42:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-12-22 11:42:38,119 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 64 [2020-12-22 11:42:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:38,119 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-12-22 11:42:38,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:42:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-12-22 11:42:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 11:42:38,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:38,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:42:38,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 11:42:38,121 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash -768630632, now seen corresponding path program 1 times [2020-12-22 11:42:38,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884964663] [2020-12-22 11:42:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:38,662 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 11:42:38,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884964663] [2020-12-22 11:42:38,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:38,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:42:38,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243068924] [2020-12-22 11:42:38,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:42:38,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:38,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:42:38,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:42:38,664 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 8 states. [2020-12-22 11:42:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:39,225 INFO L93 Difference]: Finished difference Result 186 states and 199 transitions. [2020-12-22 11:42:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:42:39,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-12-22 11:42:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:39,227 INFO L225 Difference]: With dead ends: 186 [2020-12-22 11:42:39,228 INFO L226 Difference]: Without dead ends: 184 [2020-12-22 11:42:39,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-22 11:42:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-12-22 11:42:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 124. [2020-12-22 11:42:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 11:42:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2020-12-22 11:42:39,239 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 66 [2020-12-22 11:42:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:39,240 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2020-12-22 11:42:39,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:42:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2020-12-22 11:42:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 11:42:39,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:39,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:42:39,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 11:42:39,241 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1577977258, now seen corresponding path program 1 times [2020-12-22 11:42:39,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:39,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106228285] [2020-12-22 11:42:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:39,798 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 11:42:39,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106228285] [2020-12-22 11:42:39,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:39,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:42:39,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708529401] [2020-12-22 11:42:39,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:42:39,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:39,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:42:39,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:42:39,802 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 4 states. [2020-12-22 11:42:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:42,220 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-12-22 11:42:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:42:42,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 11:42:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:42,223 INFO L225 Difference]: With dead ends: 166 [2020-12-22 11:42:42,223 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 11:42:42,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 11:42:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 11:42:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 123. [2020-12-22 11:42:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 11:42:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2020-12-22 11:42:42,233 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 66 [2020-12-22 11:42:42,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:42,234 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2020-12-22 11:42:42,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:42:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2020-12-22 11:42:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 11:42:42,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:42,235 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:42:42,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 11:42:42,235 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash -331908162, now seen corresponding path program 1 times [2020-12-22 11:42:42,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:42,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529078617] [2020-12-22 11:42:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:43,057 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 11:42:43,299 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 11:42:43,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529078617] [2020-12-22 11:42:43,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:43,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:42:43,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998876464] [2020-12-22 11:42:43,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:42:43,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:43,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:42:43,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:42:43,301 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand 8 states. [2020-12-22 11:42:49,957 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-22 11:42:50,329 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 11:42:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:50,498 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-12-22 11:42:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:42:50,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-12-22 11:42:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:50,502 INFO L225 Difference]: With dead ends: 162 [2020-12-22 11:42:50,502 INFO L226 Difference]: Without dead ends: 160 [2020-12-22 11:42:50,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:42:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-22 11:42:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2020-12-22 11:42:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 11:42:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2020-12-22 11:42:50,516 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 72 [2020-12-22 11:42:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:50,517 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2020-12-22 11:42:50,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:42:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2020-12-22 11:42:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 11:42:50,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:50,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:42:50,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 11:42:50,519 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:50,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:50,519 INFO L82 PathProgramCache]: Analyzing trace with hash 459517097, now seen corresponding path program 1 times [2020-12-22 11:42:50,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:50,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996317773] [2020-12-22 11:42:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:58,026 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 17 [2020-12-22 11:42:58,309 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2020-12-22 11:42:59,413 WARN L197 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-12-22 11:42:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:42:59,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996317773] [2020-12-22 11:42:59,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654983375] [2020-12-22 11:42:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:01,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 94 conjunts are in the unsatisfiable core [2020-12-22 11:43:01,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:01,259 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 11:43:01,263 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:01,286 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 11:43:01,427 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:01,427 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 11:43:01,448 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:01,464 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:01,514 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-12-22 11:43:01,682 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2020-12-22 11:43:01,684 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:01,718 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 11:43:01,722 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:01,743 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:43:01,744 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:12 [2020-12-22 11:43:02,830 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 11:43:02,833 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2020-12-22 11:43:02,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:02,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:02,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:43:02,858 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:20 [2020-12-22 11:43:03,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,228 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,293 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,358 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,405 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,443 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,470 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,496 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,533 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,556 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,582 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,593 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,602 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,612 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,632 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,640 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,649 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,659 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,668 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,677 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,688 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,697 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,734 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:43:03,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,768 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 11:43:03,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 11:43:03,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,853 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:03,862 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 11:43:03,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:43:03,980 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2020-12-22 11:43:03,983 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:04,034 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2020-12-22 11:43:04,038 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:04,080 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2020-12-22 11:43:04,086 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:04,124 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2020-12-22 11:43:04,127 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:04,878 WARN L197 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-12-22 11:43:04,880 INFO L625 ElimStorePlain]: treesize reduction 24, result has 88.6 percent of original size [2020-12-22 11:43:04,980 INFO L547 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-2 vars, End of recursive call: 16 dim-0 vars, and 4 xjuncts. [2020-12-22 11:43:04,981 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:227, output treesize:327 [2020-12-22 11:43:16,168 WARN L197 SmtUtils]: Spent 8.77 s on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2020-12-22 11:43:16,633 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:16,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:43:16,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-12-22 11:43:16,735 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:16,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:43:16,770 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2020-12-22 11:43:16,775 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:17,026 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 11:43:17,027 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:17,060 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 2 xjuncts. [2020-12-22 11:43:17,061 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:182, output treesize:174 [2020-12-22 11:43:17,533 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-12-22 11:43:18,150 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-22 11:43:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:18,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 11:43:18,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2020-12-22 11:43:18,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245016172] [2020-12-22 11:43:18,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 11:43:18,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:18,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 11:43:18,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=681, Unknown=1, NotChecked=0, Total=756 [2020-12-22 11:43:18,220 INFO L87 Difference]: Start difference. First operand 143 states and 152 transitions. Second operand 28 states. [2020-12-22 11:43:42,403 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-22 11:43:42,958 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-12-22 11:43:43,380 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-22 11:43:44,039 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-22 11:43:44,448 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-22 11:43:45,024 WARN L197 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-12-22 11:43:51,913 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 79 [2020-12-22 11:44:10,958 WARN L197 SmtUtils]: Spent 16.75 s on a formula simplification. DAG size of input: 174 DAG size of output: 110 [2020-12-22 11:44:20,569 WARN L197 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 81 [2020-12-22 11:44:37,975 WARN L197 SmtUtils]: Spent 13.09 s on a formula simplification. DAG size of input: 176 DAG size of output: 114 [2020-12-22 11:44:55,917 WARN L197 SmtUtils]: Spent 17.59 s on a formula simplification. DAG size of input: 192 DAG size of output: 115