/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:57:40,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:57:40,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:57:40,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:57:40,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:57:40,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:57:40,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:57:40,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:57:40,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:57:40,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:57:40,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:57:40,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:57:40,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:57:40,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:57:40,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:57:40,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:57:40,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:57:40,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:57:40,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:57:40,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:57:40,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:57:40,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:57:40,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:57:40,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:57:40,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:57:40,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:57:40,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:57:40,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:57:40,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:57:40,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:57:40,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:57:40,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:57:40,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:57:40,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:57:40,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:57:40,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:57:40,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:57:40,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:57:40,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:57:40,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:57:40,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:57:40,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:57:40,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:57:40,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:57:40,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:57:40,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:57:40,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:57:40,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:57:40,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:57:40,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:57:40,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:57:40,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:57:40,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:57:40,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:57:40,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:57:40,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:57:40,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:57:40,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:57:40,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:57:40,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:57:40,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:57:40,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:57:40,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:57:40,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:57:40,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:57:40,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:57:40,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:57:40,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:57:40,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:57:40,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:57:40,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:57:40,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:57:41,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:57:41,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:57:41,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:57:41,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:57:41,381 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:57:41,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-10-23 18:57:41,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cfbe650f/b9804d9f285944e5a551b80af7982c80/FLAG77b240038 [2020-10-23 18:57:42,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:57:42,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-10-23 18:57:42,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cfbe650f/b9804d9f285944e5a551b80af7982c80/FLAG77b240038 [2020-10-23 18:57:42,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cfbe650f/b9804d9f285944e5a551b80af7982c80 [2020-10-23 18:57:42,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:57:42,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:57:42,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:57:42,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:57:42,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:57:42,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:57:42" (1/1) ... [2020-10-23 18:57:42,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b8afaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:42, skipping insertion in model container [2020-10-23 18:57:42,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:57:42" (1/1) ... [2020-10-23 18:57:42,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:57:42,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:57:42,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:57:42,987 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:57:43,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:57:43,159 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:57:43,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43 WrapperNode [2020-10-23 18:57:43,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:57:43,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:57:43,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:57:43,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:57:43,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (1/1) ... [2020-10-23 18:57:43,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:57:43,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:57:43,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:57:43,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:57:43,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (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 [2020-10-23 18:57:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:57:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:57:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:57:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 18:57:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-10-23 18:57:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-10-23 18:57:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-10-23 18:57:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-10-23 18:57:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-10-23 18:57:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-10-23 18:57:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-10-23 18:57:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-10-23 18:57:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-10-23 18:57:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-10-23 18:57:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-10-23 18:57:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-10-23 18:57:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-10-23 18:57:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-10-23 18:57:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit14 [2020-10-23 18:57:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-10-23 18:57:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-10-23 18:57:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-10-23 18:57:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-10-23 18:57:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-10-23 18:57:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-10-23 18:57:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-10-23 18:57:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-10-23 18:57:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-10-23 18:57:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-10-23 18:57:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-10-23 18:57:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-10-23 18:57:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit14_triggered [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 18:57:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 18:57:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 18:57:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 18:57:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:57:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:57:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:57:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:57:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-10-23 18:57:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-10-23 18:57:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-10-23 18:57:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-10-23 18:57:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-10-23 18:57:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit14_triggered [2020-10-23 18:57:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-10-23 18:57:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-10-23 18:57:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-10-23 18:57:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-10-23 18:57:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-10-23 18:57:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-10-23 18:57:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-10-23 18:57:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-10-23 18:57:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-10-23 18:57:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-10-23 18:57:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-10-23 18:57:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-10-23 18:57:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-10-23 18:57:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-10-23 18:57:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-10-23 18:57:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure transmit14 [2020-10-23 18:57:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-23 18:57:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 18:57:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 18:57:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 18:57:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-23 18:57:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-23 18:57:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-23 18:57:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-10-23 18:57:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:57:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:57:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:57:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:57:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:57:44,971 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:57:44,972 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-23 18:57:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:57:44 BoogieIcfgContainer [2020-10-23 18:57:44,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:57:44,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:57:44,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:57:44,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:57:44,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:57:42" (1/3) ... [2020-10-23 18:57:44,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dac171d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:57:44, skipping insertion in model container [2020-10-23 18:57:44,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:57:43" (2/3) ... [2020-10-23 18:57:44,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dac171d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:57:44, skipping insertion in model container [2020-10-23 18:57:44,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:57:44" (3/3) ... [2020-10-23 18:57:44,995 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2020-10-23 18:57:45,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:57:45,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:57:45,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:57:45,071 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:57:45,071 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:57:45,072 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:57:45,072 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:57:45,072 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:57:45,072 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:57:45,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:57:45,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:57:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states. [2020-10-23 18:57:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:57:45,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:57:45,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:57:45,135 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:57:45,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:57:45,143 INFO L82 PathProgramCache]: Analyzing trace with hash 858426230, now seen corresponding path program 1 times [2020-10-23 18:57:45,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:57:45,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958163242] [2020-10-23 18:57:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:57:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,253 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:57:46,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:57:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:57:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:57:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:57:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:57:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:57:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:57:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:57:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:57:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:57:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:57:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:57:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:57:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:57:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:57:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:57:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:57:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:57:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:57:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:57:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:57:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:57:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:57:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:57:47,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958163242] [2020-10-23 18:57:47,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:57:47,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 18:57:47,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022184632] [2020-10-23 18:57:47,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:57:47,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:57:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:57:47,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:57:47,058 INFO L87 Difference]: Start difference. First operand 530 states. Second operand 8 states. [2020-10-23 18:57:47,771 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-23 18:57:48,011 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-23 18:57:48,659 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 18:57:48,941 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:57:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:57:58,261 INFO L93 Difference]: Finished difference Result 1376 states and 2267 transitions. [2020-10-23 18:57:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 18:57:58,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-10-23 18:57:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:57:58,296 INFO L225 Difference]: With dead ends: 1376 [2020-10-23 18:57:58,296 INFO L226 Difference]: Without dead ends: 852 [2020-10-23 18:57:58,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:57:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-23 18:57:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 518. [2020-10-23 18:57:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-23 18:57:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 761 transitions. [2020-10-23 18:57:58,583 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 761 transitions. Word has length 255 [2020-10-23 18:57:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:57:58,583 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 761 transitions. [2020-10-23 18:57:58,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:57:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 761 transitions. [2020-10-23 18:57:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:57:58,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:57:58,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:57:58,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:57:58,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:57:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:57:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1093699768, now seen corresponding path program 1 times [2020-10-23 18:57:58,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:57:58,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066164838] [2020-10-23 18:57:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:57:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,208 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:57:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:57:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:57:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:57:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:57:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:57:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:57:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:57:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:57:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:57:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:57:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:57:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:57:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:57:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:57:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:57:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:57:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:57:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:57:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:57:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:57:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:57:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:57:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:57:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:57:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:57:59,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066164838] [2020-10-23 18:57:59,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:57:59,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 18:57:59,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200027180] [2020-10-23 18:57:59,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:57:59,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:57:59,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:57:59,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:57:59,821 INFO L87 Difference]: Start difference. First operand 518 states and 761 transitions. Second operand 8 states. [2020-10-23 18:58:00,378 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-23 18:58:00,590 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-23 18:58:01,172 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 18:58:01,425 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:58:01,811 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-23 18:58:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:58:12,035 INFO L93 Difference]: Finished difference Result 1344 states and 2057 transitions. [2020-10-23 18:58:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:58:12,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-10-23 18:58:12,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:58:12,047 INFO L225 Difference]: With dead ends: 1344 [2020-10-23 18:58:12,047 INFO L226 Difference]: Without dead ends: 852 [2020-10-23 18:58:12,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:58:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-23 18:58:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 518. [2020-10-23 18:58:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-23 18:58:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 760 transitions. [2020-10-23 18:58:12,179 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 760 transitions. Word has length 255 [2020-10-23 18:58:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:58:12,180 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 760 transitions. [2020-10-23 18:58:12,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:58:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 760 transitions. [2020-10-23 18:58:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:58:12,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:58:12,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:58:12,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:58:12,186 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:58:12,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:58:12,187 INFO L82 PathProgramCache]: Analyzing trace with hash -530520070, now seen corresponding path program 1 times [2020-10-23 18:58:12,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:58:12,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659865751] [2020-10-23 18:58:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:58:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:12,908 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:58:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:58:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:58:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:58:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:58:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:58:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:58:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:58:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:58:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:58:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:58:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:58:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:58:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:58:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:58:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:58:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:58:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:58:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:58:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:58:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:58:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:58:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:58:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:58:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:58:13,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659865751] [2020-10-23 18:58:13,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:58:13,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 18:58:13,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491330378] [2020-10-23 18:58:13,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 18:58:13,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:58:13,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 18:58:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:58:13,516 INFO L87 Difference]: Start difference. First operand 518 states and 760 transitions. Second operand 9 states. [2020-10-23 18:58:14,241 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 18:58:14,490 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:58:14,767 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:58:15,116 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 18:58:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:58:25,335 INFO L93 Difference]: Finished difference Result 1338 states and 2054 transitions. [2020-10-23 18:58:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:58:25,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 255 [2020-10-23 18:58:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:58:25,344 INFO L225 Difference]: With dead ends: 1338 [2020-10-23 18:58:25,345 INFO L226 Difference]: Without dead ends: 852 [2020-10-23 18:58:25,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:58:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-23 18:58:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 518. [2020-10-23 18:58:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-23 18:58:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 757 transitions. [2020-10-23 18:58:25,514 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 757 transitions. Word has length 255 [2020-10-23 18:58:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:58:25,514 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 757 transitions. [2020-10-23 18:58:25,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 18:58:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 757 transitions. [2020-10-23 18:58:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:58:25,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:58:25,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:58:25,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:58:25,532 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:58:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:58:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1972853434, now seen corresponding path program 1 times [2020-10-23 18:58:25,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:58:25,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117874537] [2020-10-23 18:58:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:58:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,169 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:58:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:58:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:58:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:58:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:58:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:58:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:58:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:58:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:58:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:58:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:58:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:58:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:58:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:58:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:58:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:58:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:58:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:58:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:58:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:58:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:58:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:58:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:58:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:58:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:58:26,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117874537] [2020-10-23 18:58:26,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:58:26,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 18:58:26,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72676268] [2020-10-23 18:58:26,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:58:26,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:58:26,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:58:26,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:58:26,700 INFO L87 Difference]: Start difference. First operand 518 states and 757 transitions. Second operand 10 states. [2020-10-23 18:58:27,265 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 18:58:27,481 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 18:58:27,776 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 18:58:28,168 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 18:58:29,235 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-10-23 18:58:29,375 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 18:58:30,565 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 18:58:34,665 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 18:58:35,363 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 18:58:37,619 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-10-23 18:58:37,755 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 18:58:38,172 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 18:58:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:58:52,901 INFO L93 Difference]: Finished difference Result 2227 states and 3449 transitions. [2020-10-23 18:58:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 18:58:52,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 18:58:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:58:52,915 INFO L225 Difference]: With dead ends: 2227 [2020-10-23 18:58:52,915 INFO L226 Difference]: Without dead ends: 1741 [2020-10-23 18:58:52,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 18:58:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-23 18:58:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1056. [2020-10-23 18:58:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-10-23 18:58:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1571 transitions. [2020-10-23 18:58:53,184 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1571 transitions. Word has length 255 [2020-10-23 18:58:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:58:53,185 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1571 transitions. [2020-10-23 18:58:53,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:58:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1571 transitions. [2020-10-23 18:58:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:58:53,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:58:53,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:58:53,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:58:53,190 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:58:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:58:53,190 INFO L82 PathProgramCache]: Analyzing trace with hash 114445372, now seen corresponding path program 1 times [2020-10-23 18:58:53,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:58:53,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766672590] [2020-10-23 18:58:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:58:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:53,776 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:58:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:58:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:53,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:58:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:58:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:58:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:58:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:58:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:58:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:58:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:58:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:58:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:58:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:58:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:58:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:58:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:58:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:58:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:58:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:58:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:58:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:58:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:58:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:58:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:58:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:58:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:58:54,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766672590] [2020-10-23 18:58:54,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:58:54,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 18:58:54,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112726055] [2020-10-23 18:58:54,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:58:54,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:58:54,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:58:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:58:54,311 INFO L87 Difference]: Start difference. First operand 1056 states and 1571 transitions. Second operand 10 states. [2020-10-23 18:58:54,881 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 18:58:55,098 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:58:55,410 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:58:55,775 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 18:59:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:59:06,379 INFO L93 Difference]: Finished difference Result 2726 states and 4212 transitions. [2020-10-23 18:59:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:59:06,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 18:59:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:59:06,393 INFO L225 Difference]: With dead ends: 2726 [2020-10-23 18:59:06,393 INFO L226 Difference]: Without dead ends: 1704 [2020-10-23 18:59:06,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:59:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-10-23 18:59:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1056. [2020-10-23 18:59:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-10-23 18:59:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1563 transitions. [2020-10-23 18:59:06,699 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1563 transitions. Word has length 255 [2020-10-23 18:59:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:59:06,699 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1563 transitions. [2020-10-23 18:59:06,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:59:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1563 transitions. [2020-10-23 18:59:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:59:06,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:59:06,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:59:06,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 18:59:06,705 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:59:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:59:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1301422714, now seen corresponding path program 1 times [2020-10-23 18:59:06,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:59:06,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567727735] [2020-10-23 18:59:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:59:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,276 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:59:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:59:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:59:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:59:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:59:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:59:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:59:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:59:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:59:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:59:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:59:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:59:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:59:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:59:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:59:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:59:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:59:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:59:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:59:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:59:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:59:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:59:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:59:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:59:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:59:07,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567727735] [2020-10-23 18:59:07,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:59:07,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 18:59:07,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858500055] [2020-10-23 18:59:07,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:59:07,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:59:07,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:59:07,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:59:07,755 INFO L87 Difference]: Start difference. First operand 1056 states and 1563 transitions. Second operand 10 states. [2020-10-23 18:59:08,334 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 18:59:08,548 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:59:08,844 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:59:09,207 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 18:59:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:59:19,736 INFO L93 Difference]: Finished difference Result 2726 states and 4190 transitions. [2020-10-23 18:59:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:59:19,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 18:59:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:59:19,747 INFO L225 Difference]: With dead ends: 2726 [2020-10-23 18:59:19,747 INFO L226 Difference]: Without dead ends: 1704 [2020-10-23 18:59:19,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:59:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-10-23 18:59:20,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1056. [2020-10-23 18:59:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-10-23 18:59:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1555 transitions. [2020-10-23 18:59:20,079 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1555 transitions. Word has length 255 [2020-10-23 18:59:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:59:20,080 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1555 transitions. [2020-10-23 18:59:20,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:59:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1555 transitions. [2020-10-23 18:59:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:59:20,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:59:20,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:59:20,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 18:59:20,088 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:59:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:59:20,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1466869690, now seen corresponding path program 1 times [2020-10-23 18:59:20,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:59:20,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208243636] [2020-10-23 18:59:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:59:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:20,675 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:59:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:59:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:59:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:59:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:59:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:20,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:59:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:59:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:59:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:59:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:59:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:59:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:59:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:59:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:59:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:59:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:59:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:59:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:59:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:59:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:59:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:59:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:59:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:59:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:59:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:59:21,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208243636] [2020-10-23 18:59:21,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:59:21,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 18:59:21,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414432081] [2020-10-23 18:59:21,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:59:21,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:59:21,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:59:21,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:59:21,172 INFO L87 Difference]: Start difference. First operand 1056 states and 1555 transitions. Second operand 10 states. [2020-10-23 18:59:21,739 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 18:59:21,954 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 18:59:22,251 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 18:59:22,660 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 18:59:23,722 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-10-23 18:59:23,861 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 18:59:25,007 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 18:59:27,294 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-23 18:59:29,063 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 18:59:29,768 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 18:59:32,033 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-10-23 18:59:32,165 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 18:59:33,501 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 18:59:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:59:47,179 INFO L93 Difference]: Finished difference Result 4579 states and 7107 transitions. [2020-10-23 18:59:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 18:59:47,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 18:59:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:59:47,203 INFO L225 Difference]: With dead ends: 4579 [2020-10-23 18:59:47,204 INFO L226 Difference]: Without dead ends: 3557 [2020-10-23 18:59:47,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 18:59:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2020-10-23 18:59:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2222. [2020-10-23 18:59:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2222 states. [2020-10-23 18:59:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3352 transitions. [2020-10-23 18:59:47,889 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3352 transitions. Word has length 255 [2020-10-23 18:59:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:59:47,890 INFO L481 AbstractCegarLoop]: Abstraction has 2222 states and 3352 transitions. [2020-10-23 18:59:47,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:59:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3352 transitions. [2020-10-23 18:59:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 18:59:47,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:59:47,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:59:47,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 18:59:47,893 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:59:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:59:47,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1410004344, now seen corresponding path program 1 times [2020-10-23 18:59:47,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:59:47,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823482373] [2020-10-23 18:59:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:59:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,477 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 18:59:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:59:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:59:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:59:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:59:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:59:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 18:59:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 18:59:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:59:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:59:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:59:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:59:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:59:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 18:59:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:59:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 18:59:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:59:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:59:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:59:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 18:59:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:59:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 18:59:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:59:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 18:59:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:59:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:59:49,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823482373] [2020-10-23 18:59:49,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:59:49,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 18:59:49,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998612451] [2020-10-23 18:59:49,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:59:49,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:59:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:59:49,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:59:49,007 INFO L87 Difference]: Start difference. First operand 2222 states and 3352 transitions. Second operand 10 states. [2020-10-23 18:59:49,524 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 18:59:49,737 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:59:50,034 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 18:59:50,401 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 19:00:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:00:01,047 INFO L93 Difference]: Finished difference Result 5686 states and 8841 transitions. [2020-10-23 19:00:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:00:01,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:00:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:00:01,066 INFO L225 Difference]: With dead ends: 5686 [2020-10-23 19:00:01,066 INFO L226 Difference]: Without dead ends: 3498 [2020-10-23 19:00:01,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:00:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-10-23 19:00:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2222. [2020-10-23 19:00:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2222 states. [2020-10-23 19:00:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3330 transitions. [2020-10-23 19:00:01,855 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3330 transitions. Word has length 255 [2020-10-23 19:00:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:00:01,856 INFO L481 AbstractCegarLoop]: Abstraction has 2222 states and 3330 transitions. [2020-10-23 19:00:01,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:00:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3330 transitions. [2020-10-23 19:00:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:00:01,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:00:01,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:00:01,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:00:01,859 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:00:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:00:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash -641217864, now seen corresponding path program 1 times [2020-10-23 19:00:01,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:00:01,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561437043] [2020-10-23 19:00:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:00:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,425 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:00:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:00:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:00:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:00:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:00:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:00:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:00:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:00:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:00:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:00:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:00:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:00:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:00:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:00:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:00:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:00:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:00:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:00:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:00:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:00:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:00:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:00:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:00:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:00:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:00:02,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561437043] [2020-10-23 19:00:02,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:00:02,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:00:02,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44040235] [2020-10-23 19:00:02,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:00:02,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:00:02,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:00:02,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:00:02,969 INFO L87 Difference]: Start difference. First operand 2222 states and 3330 transitions. Second operand 10 states. [2020-10-23 19:00:03,523 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 19:00:03,733 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:00:04,018 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:00:04,403 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 19:00:04,925 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-23 19:00:05,075 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 19:00:05,954 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-23 19:00:09,862 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 19:00:10,571 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 19:00:12,351 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-23 19:00:12,477 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 19:00:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:00:26,720 INFO L93 Difference]: Finished difference Result 9639 states and 15124 transitions. [2020-10-23 19:00:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:00:26,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:00:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:00:26,763 INFO L225 Difference]: With dead ends: 9639 [2020-10-23 19:00:26,763 INFO L226 Difference]: Without dead ends: 7451 [2020-10-23 19:00:26,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:00:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2020-10-23 19:00:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 4818. [2020-10-23 19:00:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-10-23 19:00:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7440 transitions. [2020-10-23 19:00:27,881 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7440 transitions. Word has length 255 [2020-10-23 19:00:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:00:27,881 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 7440 transitions. [2020-10-23 19:00:27,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:00:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7440 transitions. [2020-10-23 19:00:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:00:27,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:00:27,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:00:27,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:00:27,885 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:00:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:00:27,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1611108362, now seen corresponding path program 1 times [2020-10-23 19:00:27,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:00:27,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142015045] [2020-10-23 19:00:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:00:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,405 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:00:28,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:00:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:00:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:00:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:00:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:00:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:00:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:00:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:00:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:00:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:00:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:00:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:00:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:00:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:00:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:00:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:00:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:00:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:00:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:00:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:00:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:00:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:00:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:00:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:00:28,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142015045] [2020-10-23 19:00:28,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:00:28,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:00:28,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039833522] [2020-10-23 19:00:28,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:00:28,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:00:28,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:00:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:00:28,842 INFO L87 Difference]: Start difference. First operand 4818 states and 7440 transitions. Second operand 10 states. [2020-10-23 19:00:29,387 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 19:00:29,595 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 19:00:29,874 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 19:00:30,245 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 19:00:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:00:41,172 INFO L93 Difference]: Finished difference Result 12134 states and 19197 transitions. [2020-10-23 19:00:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:00:41,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:00:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:00:41,216 INFO L225 Difference]: With dead ends: 12134 [2020-10-23 19:00:41,216 INFO L226 Difference]: Without dead ends: 7350 [2020-10-23 19:00:41,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:00:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2020-10-23 19:00:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 4818. [2020-10-23 19:00:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-10-23 19:00:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7378 transitions. [2020-10-23 19:00:42,299 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7378 transitions. Word has length 255 [2020-10-23 19:00:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:00:42,299 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 7378 transitions. [2020-10-23 19:00:42,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:00:42,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7378 transitions. [2020-10-23 19:00:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:00:42,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:00:42,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:00:42,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:00:42,302 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:00:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:00:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1456627018, now seen corresponding path program 1 times [2020-10-23 19:00:42,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:00:42,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222662611] [2020-10-23 19:00:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:00:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:42,825 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:00:42,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:00:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:42,960 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-23 19:00:42,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:00:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:00:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:00:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,162 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 19:00:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:00:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:00:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:00:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:00:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:00:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:00:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:00:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:00:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:00:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:00:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:00:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:00:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:00:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:00:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:00:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:00:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:00:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:00:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:00:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:00:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:00:43,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222662611] [2020-10-23 19:00:43,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:00:43,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:00:43,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176403170] [2020-10-23 19:00:43,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:00:43,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:00:43,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:00:43,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:00:43,500 INFO L87 Difference]: Start difference. First operand 4818 states and 7378 transitions. Second operand 10 states. [2020-10-23 19:00:44,007 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 19:00:44,208 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:00:44,476 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:00:44,833 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 19:00:45,801 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-10-23 19:00:45,926 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 19:00:46,928 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 19:00:50,619 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 19:00:53,728 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-10-23 19:00:53,846 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 19:01:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:01:09,407 INFO L93 Difference]: Finished difference Result 20673 states and 32928 transitions. [2020-10-23 19:01:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:01:09,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:01:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:01:09,475 INFO L225 Difference]: With dead ends: 20673 [2020-10-23 19:01:09,476 INFO L226 Difference]: Without dead ends: 15889 [2020-10-23 19:01:09,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:01:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15889 states. [2020-10-23 19:01:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15889 to 10676. [2020-10-23 19:01:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10676 states. [2020-10-23 19:01:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 16948 transitions. [2020-10-23 19:01:11,635 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 16948 transitions. Word has length 255 [2020-10-23 19:01:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:01:11,635 INFO L481 AbstractCegarLoop]: Abstraction has 10676 states and 16948 transitions. [2020-10-23 19:01:11,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:01:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 16948 transitions. [2020-10-23 19:01:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:01:11,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:01:11,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:01:11,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 19:01:11,640 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:01:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:01:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1326762440, now seen corresponding path program 1 times [2020-10-23 19:01:11,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:01:11,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275027454] [2020-10-23 19:01:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:01:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,163 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:01:12,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:01:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:01:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:01:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:01:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:01:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:01:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:01:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:01:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:01:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:01:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:01:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:01:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:01:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:01:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:01:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:01:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:01:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:01:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:01:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:01:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:01:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:01:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:01:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:01:12,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275027454] [2020-10-23 19:01:12,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:01:12,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:01:12,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884032819] [2020-10-23 19:01:12,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:01:12,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:01:12,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:01:12,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:01:12,682 INFO L87 Difference]: Start difference. First operand 10676 states and 16948 transitions. Second operand 10 states. [2020-10-23 19:01:13,189 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 19:01:13,389 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:01:13,671 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:01:14,054 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 19:01:15,009 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-10-23 19:01:15,133 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 19:01:16,166 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 19:01:19,834 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 19:01:23,297 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-10-23 19:01:23,419 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 19:01:26,776 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 19:01:39,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:01:39,942 INFO L93 Difference]: Finished difference Result 45413 states and 74622 transitions. [2020-10-23 19:01:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:01:39,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:01:39,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:01:40,091 INFO L225 Difference]: With dead ends: 45413 [2020-10-23 19:01:40,092 INFO L226 Difference]: Without dead ends: 34771 [2020-10-23 19:01:40,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:01:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34771 states. [2020-10-23 19:01:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34771 to 24390. [2020-10-23 19:01:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24390 states. [2020-10-23 19:01:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24390 states to 24390 states and 40520 transitions. [2020-10-23 19:01:44,560 INFO L78 Accepts]: Start accepts. Automaton has 24390 states and 40520 transitions. Word has length 255 [2020-10-23 19:01:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:01:44,560 INFO L481 AbstractCegarLoop]: Abstraction has 24390 states and 40520 transitions. [2020-10-23 19:01:44,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:01:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 24390 states and 40520 transitions. [2020-10-23 19:01:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:01:44,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:01:44,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:01:44,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 19:01:44,569 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:01:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:01:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 894184054, now seen corresponding path program 1 times [2020-10-23 19:01:44,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:01:44,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156516278] [2020-10-23 19:01:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:01:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,093 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:01:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:01:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:01:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:01:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:01:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:01:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:01:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:01:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:01:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:01:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:01:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:01:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:01:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:01:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:01:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:01:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:01:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:01:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:01:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:01:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:01:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:01:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:01:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:01:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:01:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:01:45,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156516278] [2020-10-23 19:01:45,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:01:45,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:01:45,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140203111] [2020-10-23 19:01:45,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:01:45,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:01:45,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:01:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:01:45,615 INFO L87 Difference]: Start difference. First operand 24390 states and 40520 transitions. Second operand 10 states. [2020-10-23 19:01:46,117 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 19:01:46,308 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 19:01:46,574 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-23 19:02:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:02:01,792 INFO L93 Difference]: Finished difference Result 58814 states and 99737 transitions. [2020-10-23 19:02:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:02:01,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:02:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:02:01,924 INFO L225 Difference]: With dead ends: 58814 [2020-10-23 19:02:01,924 INFO L226 Difference]: Without dead ends: 34458 [2020-10-23 19:02:02,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:02:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34458 states. [2020-10-23 19:02:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34458 to 24390. [2020-10-23 19:02:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24390 states. [2020-10-23 19:02:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24390 states to 24390 states and 40002 transitions. [2020-10-23 19:02:06,793 INFO L78 Accepts]: Start accepts. Automaton has 24390 states and 40002 transitions. Word has length 255 [2020-10-23 19:02:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:02:06,794 INFO L481 AbstractCegarLoop]: Abstraction has 24390 states and 40002 transitions. [2020-10-23 19:02:06,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:02:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24390 states and 40002 transitions. [2020-10-23 19:02:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:02:06,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:02:06,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:02:06,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 19:02:06,802 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:02:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:02:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1449005130, now seen corresponding path program 1 times [2020-10-23 19:02:06,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:02:06,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133674320] [2020-10-23 19:02:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:02:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,376 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:02:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:02:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:02:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:02:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:02:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:02:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:02:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:02:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:02:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:02:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:02:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:02:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:02:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:02:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:02:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:02:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:02:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:02:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:02:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:02:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:02:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:02:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:02:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:02:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:02:07,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133674320] [2020-10-23 19:02:07,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:02:07,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:02:07,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764914595] [2020-10-23 19:02:07,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:02:07,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:02:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:02:07,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:02:07,860 INFO L87 Difference]: Start difference. First operand 24390 states and 40002 transitions. Second operand 10 states. [2020-10-23 19:02:08,384 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 19:02:08,585 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:02:08,964 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:02:09,321 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 19:02:10,291 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-10-23 19:02:10,417 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 19:02:11,348 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 19:02:15,425 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 19:02:20,079 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-10-23 19:02:20,202 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 19:02:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:02:44,399 INFO L93 Difference]: Finished difference Result 102027 states and 173036 transitions. [2020-10-23 19:02:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:02:44,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:02:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:02:44,677 INFO L225 Difference]: With dead ends: 102027 [2020-10-23 19:02:44,677 INFO L226 Difference]: Without dead ends: 77671 [2020-10-23 19:02:44,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:02:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77671 states. [2020-10-23 19:02:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77671 to 57002. [2020-10-23 19:02:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57002 states. [2020-10-23 19:02:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57002 states to 57002 states and 99080 transitions. [2020-10-23 19:02:54,705 INFO L78 Accepts]: Start accepts. Automaton has 57002 states and 99080 transitions. Word has length 255 [2020-10-23 19:02:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:02:54,705 INFO L481 AbstractCegarLoop]: Abstraction has 57002 states and 99080 transitions. [2020-10-23 19:02:54,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:02:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 57002 states and 99080 transitions. [2020-10-23 19:02:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:02:54,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:02:54,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:02:54,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 19:02:54,719 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:02:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:02:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1972296564, now seen corresponding path program 1 times [2020-10-23 19:02:54,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:02:54,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775926469] [2020-10-23 19:02:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:02:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,496 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:02:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:02:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:02:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:02:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:02:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:02:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:02:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:02:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:02:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:02:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:02:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:02:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:02:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:02:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:02:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:02:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:02:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:02:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:02:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:02:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:02:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:02:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:02:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:02:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:02:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:02:55,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775926469] [2020-10-23 19:02:55,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:02:55,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:02:55,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663537193] [2020-10-23 19:02:55,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:02:55,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:02:55,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:02:55,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:02:55,917 INFO L87 Difference]: Start difference. First operand 57002 states and 99080 transitions. Second operand 10 states. [2020-10-23 19:02:56,545 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 19:02:56,743 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:02:57,021 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:02:57,332 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 19:02:58,304 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-10-23 19:02:58,428 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 19:02:59,289 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 19:03:03,341 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 19:03:05,114 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 19:03:09,735 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-10-23 19:03:09,864 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 19:03:44,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:03:44,831 INFO L93 Difference]: Finished difference Result 235505 states and 423502 transitions. [2020-10-23 19:03:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:03:44,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:03:44,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:03:45,803 INFO L225 Difference]: With dead ends: 235505 [2020-10-23 19:03:45,803 INFO L226 Difference]: Without dead ends: 178537 [2020-10-23 19:03:45,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:03:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178537 states. [2020-10-23 19:04:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178537 to 137292. [2020-10-23 19:04:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137292 states. [2020-10-23 19:04:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137292 states to 137292 states and 256708 transitions. [2020-10-23 19:04:06,307 INFO L78 Accepts]: Start accepts. Automaton has 137292 states and 256708 transitions. Word has length 255 [2020-10-23 19:04:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:04:06,308 INFO L481 AbstractCegarLoop]: Abstraction has 137292 states and 256708 transitions. [2020-10-23 19:04:06,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:04:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 137292 states and 256708 transitions. [2020-10-23 19:04:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-23 19:04:06,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:04:06,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:04:06,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-23 19:04:06,326 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:04:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:04:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1251377142, now seen corresponding path program 1 times [2020-10-23 19:04:06,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:04:06,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034971898] [2020-10-23 19:04:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:04:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,179 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 19:04:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:04:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:04:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 19:04:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 19:04:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 19:04:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 19:04:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:04:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 19:04:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:04:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 19:04:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 19:04:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 19:04:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:04:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 19:04:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 19:04:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 19:04:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:04:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 19:04:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:04:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 19:04:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:04:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 19:04:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 19:04:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:04:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:04:07,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034971898] [2020-10-23 19:04:07,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:04:07,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:04:07,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039846923] [2020-10-23 19:04:07,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:04:07,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:04:07,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:04:07,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:04:07,761 INFO L87 Difference]: Start difference. First operand 137292 states and 256708 transitions. Second operand 10 states. [2020-10-23 19:04:08,275 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-23 19:04:08,470 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:04:08,743 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-23 19:04:09,048 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 19:04:09,568 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-23 19:04:09,700 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 19:04:10,327 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-23 19:04:15,474 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-23 19:04:19,994 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 19:04:25,782 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-23 19:04:25,906 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 19:05:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:05:31,071 INFO L93 Difference]: Finished difference Result 565122 states and 1101676 transitions. [2020-10-23 19:05:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:05:31,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-10-23 19:05:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:05:33,187 INFO L225 Difference]: With dead ends: 565122 [2020-10-23 19:05:33,188 INFO L226 Difference]: Without dead ends: 427864 [2020-10-23 19:05:33,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:05:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427864 states.