/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 0.2.0-7d8eed3 [2020-11-06 22:55:10,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:55:10,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:55:10,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:55:10,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:55:10,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:55:10,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:55:10,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:55:10,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:55:10,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:55:10,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:55:10,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:55:10,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:55:10,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:55:10,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:55:10,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:55:10,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:55:10,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:55:10,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:55:10,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:55:10,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:55:10,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:55:10,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:55:10,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:55:10,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:55:10,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:55:10,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:55:10,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:55:10,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:55:10,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:55:10,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:55:10,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:55:10,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:55:10,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:55:10,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:55:10,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:55:10,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:55:10,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:55:10,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:55:10,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:55:10,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:55:10,474 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 [2020-11-06 22:55:10,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:55:10,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:55:10,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:55:10,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:55:10,502 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:55:10,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:55:10,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:55:10,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:55:10,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:55:10,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:55:10,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:55:10,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:55:10,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:55:10,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:55:10,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:55:10,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:55:10,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:55:10,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:55:10,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:55:10,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:55:10,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:55:10,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:55:10,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:55:10,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:55:10,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:55:10,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:55:10,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:55:10,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:55:10,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:55:10,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:55:10,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:55:10,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:55:10,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:55:10,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:55:10,883 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:55:10,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-11-06 22:55:10,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa695909/cb91a039f25b4046b4ba029df34959e3/FLAGd6af06ed9 [2020-11-06 22:55:11,720 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:55:11,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-11-06 22:55:11,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa695909/cb91a039f25b4046b4ba029df34959e3/FLAGd6af06ed9 [2020-11-06 22:55:11,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa695909/cb91a039f25b4046b4ba029df34959e3 [2020-11-06 22:55:11,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:55:11,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:55:11,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:55:11,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:55:11,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:55:11,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:11" (1/1) ... [2020-11-06 22:55:11,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e77a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:11, skipping insertion in model container [2020-11-06 22:55:11,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:11" (1/1) ... [2020-11-06 22:55:11,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:55:12,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:55:12,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:55:12,435 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:55:12,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:55:12,668 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:55:12,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12 WrapperNode [2020-11-06 22:55:12,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:55:12,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:55:12,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:55:12,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:55:12,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (1/1) ... [2020-11-06 22:55:12,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:55:12,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:55:12,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:55:12,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:55:12,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (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 [2020-11-06 22:55:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:55:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:55:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:55:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-11-06 22:55:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-11-06 22:55:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-11-06 22:55:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-11-06 22:55:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-11-06 22:55:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-11-06 22:55:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-11-06 22:55:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-11-06 22:55:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-11-06 22:55:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-11-06 22:55:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-11-06 22:55:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-11-06 22:55:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-11-06 22:55:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-11-06 22:55:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-11-06 22:55:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit14 [2020-11-06 22:55:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-11-06 22:55:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-11-06 22:55:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-11-06 22:55:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-11-06 22:55:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-11-06 22:55:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-11-06 22:55:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-11-06 22:55:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-11-06 22:55:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-11-06 22:55:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-11-06 22:55:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-11-06 22:55:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-11-06 22:55:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-11-06 22:55:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-11-06 22:55:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit14_triggered [2020-11-06 22:55:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-11-06 22:55:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-11-06 22:55:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-11-06 22:55:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-11-06 22:55:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-11-06 22:55:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-11-06 22:55:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-11-06 22:55:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-11-06 22:55:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-11-06 22:55:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-11-06 22:55:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-11-06 22:55:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-11-06 22:55:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-11-06 22:55:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:55:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:55:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:55:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:55:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:55:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:55:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-11-06 22:55:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-11-06 22:55:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-11-06 22:55:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-11-06 22:55:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-11-06 22:55:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-11-06 22:55:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-11-06 22:55:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-11-06 22:55:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-11-06 22:55:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-11-06 22:55:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-11-06 22:55:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-11-06 22:55:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-11-06 22:55:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-11-06 22:55:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-11-06 22:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit14_triggered [2020-11-06 22:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-11-06 22:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-11-06 22:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-11-06 22:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-11-06 22:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-11-06 22:55:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-11-06 22:55:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-11-06 22:55:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-11-06 22:55:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-11-06 22:55:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-11-06 22:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-11-06 22:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-11-06 22:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-11-06 22:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-11-06 22:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-11-06 22:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure transmit14 [2020-11-06 22:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-11-06 22:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-11-06 22:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-11-06 22:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-11-06 22:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-11-06 22:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-11-06 22:55:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-11-06 22:55:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-11-06 22:55:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-11-06 22:55:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-11-06 22:55:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:55:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:55:14,414 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:55:14,415 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-06 22:55:14,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:14 BoogieIcfgContainer [2020-11-06 22:55:14,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:55:14,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:55:14,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:55:14,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:55:14,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:11" (1/3) ... [2020-11-06 22:55:14,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de36ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:14, skipping insertion in model container [2020-11-06 22:55:14,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:12" (2/3) ... [2020-11-06 22:55:14,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de36ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:14, skipping insertion in model container [2020-11-06 22:55:14,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:14" (3/3) ... [2020-11-06 22:55:14,435 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2020-11-06 22:55:14,451 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:55:14,457 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:55:14,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:55:14,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:55:14,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:55:14,502 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:55:14,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:55:14,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:55:14,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:55:14,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:55:14,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:55:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states. [2020-11-06 22:55:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:55:14,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:55:14,558 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] [2020-11-06 22:55:14,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:55:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:55:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 858426230, now seen corresponding path program 1 times [2020-11-06 22:55:14,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:55:14,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508638245] [2020-11-06 22:55:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:55:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,604 WARN L194 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:55:15,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:55:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:55:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:55:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:55:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:55:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:55:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:55:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:55:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:55:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:55:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:55:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:55:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:55:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:55:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:55:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:55:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:55:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:55:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:55:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:55:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:55:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:55:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:55:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:55:16,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508638245] [2020-11-06 22:55:16,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:55:16,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:55:16,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204189957] [2020-11-06 22:55:16,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:55:16,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:55:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:55:16,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:55:16,254 INFO L87 Difference]: Start difference. First operand 530 states. Second operand 8 states. [2020-11-06 22:55:16,699 WARN L194 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-11-06 22:55:16,925 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-06 22:55:17,388 WARN L194 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:55:17,614 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:55:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:55:25,057 INFO L93 Difference]: Finished difference Result 1376 states and 2267 transitions. [2020-11-06 22:55:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:55:25,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-11-06 22:55:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:55:25,126 INFO L225 Difference]: With dead ends: 1376 [2020-11-06 22:55:25,127 INFO L226 Difference]: Without dead ends: 852 [2020-11-06 22:55:25,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:55:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-11-06 22:55:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 518. [2020-11-06 22:55:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-11-06 22:55:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 761 transitions. [2020-11-06 22:55:25,411 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 761 transitions. Word has length 255 [2020-11-06 22:55:25,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:55:25,412 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 761 transitions. [2020-11-06 22:55:25,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:55:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 761 transitions. [2020-11-06 22:55:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:55:25,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:55:25,418 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] [2020-11-06 22:55:25,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:55:25,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:55:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:55:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1093699768, now seen corresponding path program 1 times [2020-11-06 22:55:25,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:55:25,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677376051] [2020-11-06 22:55:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:55:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:25,844 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:55:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:55:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:55:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:55:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:55:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:55:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:55:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:55:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:55:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:55:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:55:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:55:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:55:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:55:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:55:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:55:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:55:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:55:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:55:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:55:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:55:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:55:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:55:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:55:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:55:26,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677376051] [2020-11-06 22:55:26,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:55:26,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:55:26,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261137492] [2020-11-06 22:55:26,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:55:26,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:55:26,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:55:26,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:55:26,287 INFO L87 Difference]: Start difference. First operand 518 states and 761 transitions. Second operand 8 states. [2020-11-06 22:55:26,741 WARN L194 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-11-06 22:55:26,910 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-06 22:55:27,332 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:55:27,560 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:55:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:55:36,147 INFO L93 Difference]: Finished difference Result 1344 states and 2057 transitions. [2020-11-06 22:55:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:55:36,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-11-06 22:55:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:55:36,156 INFO L225 Difference]: With dead ends: 1344 [2020-11-06 22:55:36,157 INFO L226 Difference]: Without dead ends: 852 [2020-11-06 22:55:36,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:55:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-11-06 22:55:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 518. [2020-11-06 22:55:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-11-06 22:55:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 760 transitions. [2020-11-06 22:55:36,286 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 760 transitions. Word has length 255 [2020-11-06 22:55:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:55:36,286 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 760 transitions. [2020-11-06 22:55:36,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:55:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 760 transitions. [2020-11-06 22:55:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:55:36,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:55:36,291 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] [2020-11-06 22:55:36,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:55:36,292 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:55:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:55:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash -530520070, now seen corresponding path program 1 times [2020-11-06 22:55:36,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:55:36,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852640098] [2020-11-06 22:55:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:55:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:36,737 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:55:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:55:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:55:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:55:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:36,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:55:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:55:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:55:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:55:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:55:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:55:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:55:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:55:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:55:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:55:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:55:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:55:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:55:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:55:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:55:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:55:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:55:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:55:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:55:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:55:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:55:37,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852640098] [2020-11-06 22:55:37,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:55:37,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:55:37,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904548248] [2020-11-06 22:55:37,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:55:37,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:55:37,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:55:37,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:55:37,367 INFO L87 Difference]: Start difference. First operand 518 states and 760 transitions. Second operand 9 states. [2020-11-06 22:55:37,842 WARN L194 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:55:37,998 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:55:38,239 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:55:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:55:46,821 INFO L93 Difference]: Finished difference Result 1338 states and 2054 transitions. [2020-11-06 22:55:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:55:46,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 255 [2020-11-06 22:55:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:55:46,829 INFO L225 Difference]: With dead ends: 1338 [2020-11-06 22:55:46,830 INFO L226 Difference]: Without dead ends: 852 [2020-11-06 22:55:46,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:55:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-11-06 22:55:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 518. [2020-11-06 22:55:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-11-06 22:55:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 757 transitions. [2020-11-06 22:55:46,955 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 757 transitions. Word has length 255 [2020-11-06 22:55:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:55:46,956 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 757 transitions. [2020-11-06 22:55:46,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:55:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 757 transitions. [2020-11-06 22:55:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:55:46,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:55:46,960 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] [2020-11-06 22:55:46,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:55:46,961 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:55:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:55:46,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1972853434, now seen corresponding path program 1 times [2020-11-06 22:55:46,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:55:46,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751484211] [2020-11-06 22:55:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:55:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,420 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:55:47,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:55:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:55:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:55:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:55:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:55:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:55:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:55:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:55:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:55:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:55:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:55:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:55:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:55:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:55:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:55:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:55:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:55:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:55:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:55:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:55:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:55:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:55:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:55:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:55:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:55:47,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751484211] [2020-11-06 22:55:47,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:55:47,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:55:47,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612745232] [2020-11-06 22:55:47,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:55:47,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:55:47,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:55:47,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:55:47,853 INFO L87 Difference]: Start difference. First operand 518 states and 757 transitions. Second operand 10 states. [2020-11-06 22:55:48,229 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:55:48,385 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:55:48,617 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:55:49,709 WARN L194 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-11-06 22:55:50,786 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-11-06 22:55:54,146 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:55:56,425 WARN L194 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-11-06 22:56:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:56:08,481 INFO L93 Difference]: Finished difference Result 2227 states and 3449 transitions. [2020-11-06 22:56:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:56:08,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:56:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:56:08,494 INFO L225 Difference]: With dead ends: 2227 [2020-11-06 22:56:08,494 INFO L226 Difference]: Without dead ends: 1741 [2020-11-06 22:56:08,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-11-06 22:56:08,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-11-06 22:56:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1056. [2020-11-06 22:56:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-11-06 22:56:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1571 transitions. [2020-11-06 22:56:08,774 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1571 transitions. Word has length 255 [2020-11-06 22:56:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:56:08,775 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1571 transitions. [2020-11-06 22:56:08,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:56:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1571 transitions. [2020-11-06 22:56:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:56:08,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:56:08,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:56:08,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:56:08,780 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:56:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:56:08,780 INFO L82 PathProgramCache]: Analyzing trace with hash 114445372, now seen corresponding path program 1 times [2020-11-06 22:56:08,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:56:08,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352706713] [2020-11-06 22:56:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:56:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,241 WARN L194 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:56:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:56:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:56:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:56:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:56:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:56:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:56:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:56:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:56:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:56:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:56:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:56:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:56:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:56:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:56:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:56:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:56:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:56:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:56:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:56:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:56:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:56:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:56:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:56:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:56:09,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352706713] [2020-11-06 22:56:09,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:56:09,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:56:09,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879798393] [2020-11-06 22:56:09,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:56:09,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:56:09,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:56:09,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:56:09,675 INFO L87 Difference]: Start difference. First operand 1056 states and 1571 transitions. Second operand 10 states. [2020-11-06 22:56:10,085 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:56:10,238 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:56:10,448 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:56:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:56:19,304 INFO L93 Difference]: Finished difference Result 2726 states and 4212 transitions. [2020-11-06 22:56:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:56:19,304 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:56:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:56:19,315 INFO L225 Difference]: With dead ends: 2726 [2020-11-06 22:56:19,315 INFO L226 Difference]: Without dead ends: 1704 [2020-11-06 22:56:19,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:56:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-11-06 22:56:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1056. [2020-11-06 22:56:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-11-06 22:56:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1563 transitions. [2020-11-06 22:56:19,566 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1563 transitions. Word has length 255 [2020-11-06 22:56:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:56:19,566 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1563 transitions. [2020-11-06 22:56:19,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:56:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1563 transitions. [2020-11-06 22:56:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:56:19,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:56:19,571 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] [2020-11-06 22:56:19,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:56:19,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:56:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:56:19,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1301422714, now seen corresponding path program 1 times [2020-11-06 22:56:19,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:56:19,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681493688] [2020-11-06 22:56:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:56:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,034 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:56:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:56:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:56:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:56:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:56:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:56:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:56:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:56:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:56:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:56:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:56:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:56:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:56:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:56:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:56:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:56:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:56:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:56:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:56:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:56:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:56:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:56:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:56:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:56:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:56:20,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681493688] [2020-11-06 22:56:20,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:56:20,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:56:20,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903121954] [2020-11-06 22:56:20,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:56:20,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:56:20,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:56:20,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:56:20,475 INFO L87 Difference]: Start difference. First operand 1056 states and 1563 transitions. Second operand 10 states. [2020-11-06 22:56:20,904 WARN L194 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:56:21,102 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:56:21,364 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:56:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:56:30,230 INFO L93 Difference]: Finished difference Result 2726 states and 4190 transitions. [2020-11-06 22:56:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:56:30,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:56:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:56:30,243 INFO L225 Difference]: With dead ends: 2726 [2020-11-06 22:56:30,243 INFO L226 Difference]: Without dead ends: 1704 [2020-11-06 22:56:30,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:56:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-11-06 22:56:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1056. [2020-11-06 22:56:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-11-06 22:56:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1555 transitions. [2020-11-06 22:56:30,501 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1555 transitions. Word has length 255 [2020-11-06 22:56:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:56:30,502 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1555 transitions. [2020-11-06 22:56:30,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:56:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1555 transitions. [2020-11-06 22:56:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:56:30,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:56:30,504 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] [2020-11-06 22:56:30,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:56:30,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:56:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:56:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1466869690, now seen corresponding path program 1 times [2020-11-06 22:56:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:56:30,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140196323] [2020-11-06 22:56:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:56:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:30,937 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:56:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:56:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:30,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:56:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:56:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:56:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:56:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:56:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:56:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:56:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:56:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:56:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:56:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:56:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:56:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:56:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:56:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:56:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:56:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:56:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:56:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:56:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:56:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:56:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:56:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:56:31,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140196323] [2020-11-06 22:56:31,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:56:31,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:56:31,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759710700] [2020-11-06 22:56:31,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:56:31,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:56:31,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:56:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:56:31,402 INFO L87 Difference]: Start difference. First operand 1056 states and 1555 transitions. Second operand 10 states. [2020-11-06 22:56:31,819 WARN L194 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:56:31,984 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:56:32,188 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:56:33,296 WARN L194 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-11-06 22:56:34,343 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-11-06 22:56:37,669 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:56:40,031 WARN L194 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-11-06 22:56:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:56:52,161 INFO L93 Difference]: Finished difference Result 4579 states and 7107 transitions. [2020-11-06 22:56:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:56:52,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:56:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:56:52,183 INFO L225 Difference]: With dead ends: 4579 [2020-11-06 22:56:52,183 INFO L226 Difference]: Without dead ends: 3557 [2020-11-06 22:56:52,188 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 [2020-11-06 22:56:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2020-11-06 22:56:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2222. [2020-11-06 22:56:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2222 states. [2020-11-06 22:56:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3352 transitions. [2020-11-06 22:56:52,809 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3352 transitions. Word has length 255 [2020-11-06 22:56:52,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:56:52,809 INFO L481 AbstractCegarLoop]: Abstraction has 2222 states and 3352 transitions. [2020-11-06 22:56:52,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:56:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3352 transitions. [2020-11-06 22:56:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:56:52,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:56:52,813 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] [2020-11-06 22:56:52,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 22:56:52,813 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:56:52,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:56:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1410004344, now seen corresponding path program 1 times [2020-11-06 22:56:52,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:56:52,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829352754] [2020-11-06 22:56:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:56:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,281 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:56:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:56:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:56:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:56:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:56:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:56:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:56:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:56:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:56:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:56:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:56:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:56:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:56:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:56:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:56:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:56:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:56:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:56:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:56:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:56:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:56:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:56:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:56:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:56:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:56:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:56:53,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829352754] [2020-11-06 22:56:53,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:56:53,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:56:53,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194261452] [2020-11-06 22:56:53,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:56:53,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:56:53,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:56:53,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:56:53,685 INFO L87 Difference]: Start difference. First operand 2222 states and 3352 transitions. Second operand 10 states. [2020-11-06 22:56:54,107 WARN L194 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:56:54,292 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:56:54,516 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:57:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:57:03,722 INFO L93 Difference]: Finished difference Result 5686 states and 8841 transitions. [2020-11-06 22:57:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:57:03,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:57:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:57:03,742 INFO L225 Difference]: With dead ends: 5686 [2020-11-06 22:57:03,742 INFO L226 Difference]: Without dead ends: 3498 [2020-11-06 22:57:03,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:57:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-11-06 22:57:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2222. [2020-11-06 22:57:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2222 states. [2020-11-06 22:57:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3330 transitions. [2020-11-06 22:57:04,442 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3330 transitions. Word has length 255 [2020-11-06 22:57:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:57:04,443 INFO L481 AbstractCegarLoop]: Abstraction has 2222 states and 3330 transitions. [2020-11-06 22:57:04,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:57:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3330 transitions. [2020-11-06 22:57:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:57:04,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:57:04,446 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] [2020-11-06 22:57:04,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 22:57:04,447 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:57:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:57:04,447 INFO L82 PathProgramCache]: Analyzing trace with hash -641217864, now seen corresponding path program 1 times [2020-11-06 22:57:04,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:57:04,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594880727] [2020-11-06 22:57:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:57:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:04,885 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:57:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:57:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:57:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:57:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:57:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:57:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:57:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:57:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:57:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:57:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:57:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:57:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:57:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:57:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:57:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:57:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:57:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:57:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:57:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:57:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:57:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:57:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:57:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:57:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:57:05,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594880727] [2020-11-06 22:57:05,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:57:05,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:57:05,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765183428] [2020-11-06 22:57:05,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:57:05,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:57:05,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:57:05,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:57:05,301 INFO L87 Difference]: Start difference. First operand 2222 states and 3330 transitions. Second operand 10 states. [2020-11-06 22:57:05,727 WARN L194 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:57:05,898 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:57:06,116 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:57:06,851 WARN L194 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-11-06 22:57:07,691 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-11-06 22:57:10,990 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:57:13,109 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-11-06 22:57:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:57:25,646 INFO L93 Difference]: Finished difference Result 9639 states and 15124 transitions. [2020-11-06 22:57:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:57:25,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:57:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:57:25,693 INFO L225 Difference]: With dead ends: 9639 [2020-11-06 22:57:25,693 INFO L226 Difference]: Without dead ends: 7451 [2020-11-06 22:57:25,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-11-06 22:57:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2020-11-06 22:57:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 4818. [2020-11-06 22:57:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-11-06 22:57:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7440 transitions. [2020-11-06 22:57:27,013 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7440 transitions. Word has length 255 [2020-11-06 22:57:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:57:27,014 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 7440 transitions. [2020-11-06 22:57:27,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:57:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7440 transitions. [2020-11-06 22:57:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:57:27,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:57:27,018 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] [2020-11-06 22:57:27,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 22:57:27,018 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:57:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:57:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1611108362, now seen corresponding path program 1 times [2020-11-06 22:57:27,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:57:27,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107143809] [2020-11-06 22:57:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:57:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,435 WARN L194 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:57:27,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:57:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:57:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:57:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:57:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:57:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:57:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:57:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:57:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:57:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:57:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:57:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:57:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:57:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:57:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:57:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:57:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:57:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:57:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:57:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:57:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:57:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:57:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:57:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:57:27,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107143809] [2020-11-06 22:57:27,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:57:27,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:57:27,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044954352] [2020-11-06 22:57:27,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:57:27,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:57:27,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:57:27,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:57:27,909 INFO L87 Difference]: Start difference. First operand 4818 states and 7440 transitions. Second operand 10 states. [2020-11-06 22:57:28,317 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:57:28,480 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:57:28,699 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:57:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:57:38,467 INFO L93 Difference]: Finished difference Result 12134 states and 19197 transitions. [2020-11-06 22:57:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:57:38,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:57:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:57:38,503 INFO L225 Difference]: With dead ends: 12134 [2020-11-06 22:57:38,503 INFO L226 Difference]: Without dead ends: 7350 [2020-11-06 22:57:38,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:57:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2020-11-06 22:57:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 4818. [2020-11-06 22:57:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-11-06 22:57:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7378 transitions. [2020-11-06 22:57:39,542 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7378 transitions. Word has length 255 [2020-11-06 22:57:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:57:39,542 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 7378 transitions. [2020-11-06 22:57:39,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:57:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7378 transitions. [2020-11-06 22:57:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:57:39,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:57:39,546 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] [2020-11-06 22:57:39,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 22:57:39,546 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:57:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:57:39,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1456627018, now seen corresponding path program 1 times [2020-11-06 22:57:39,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:57:39,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507991865] [2020-11-06 22:57:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:57:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,061 WARN L194 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:57:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:57:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:57:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:57:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:57:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:57:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:57:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:57:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:57:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:57:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:57:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:57:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:57:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:57:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:57:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:57:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:57:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:57:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:57:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:57:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:57:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:57:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:57:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:57:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:57:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:57:40,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507991865] [2020-11-06 22:57:40,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:57:40,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:57:40,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360227259] [2020-11-06 22:57:40,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:57:40,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:57:40,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:57:40,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:57:40,504 INFO L87 Difference]: Start difference. First operand 4818 states and 7378 transitions. Second operand 10 states. [2020-11-06 22:57:40,917 WARN L194 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:57:41,077 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:57:41,302 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:57:42,446 WARN L194 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-11-06 22:57:43,409 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-11-06 22:57:46,770 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:57:49,489 WARN L194 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-11-06 22:58:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:58:03,519 INFO L93 Difference]: Finished difference Result 20673 states and 32928 transitions. [2020-11-06 22:58:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:58:03,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:58:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:58:03,580 INFO L225 Difference]: With dead ends: 20673 [2020-11-06 22:58:03,580 INFO L226 Difference]: Without dead ends: 15889 [2020-11-06 22:58:03,600 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 [2020-11-06 22:58:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15889 states. [2020-11-06 22:58:05,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15889 to 10676. [2020-11-06 22:58:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10676 states. [2020-11-06 22:58:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 16948 transitions. [2020-11-06 22:58:05,782 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 16948 transitions. Word has length 255 [2020-11-06 22:58:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:58:05,782 INFO L481 AbstractCegarLoop]: Abstraction has 10676 states and 16948 transitions. [2020-11-06 22:58:05,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:58:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 16948 transitions. [2020-11-06 22:58:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:58:05,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:58:05,787 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] [2020-11-06 22:58:05,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-06 22:58:05,787 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:58:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:58:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1326762440, now seen corresponding path program 1 times [2020-11-06 22:58:05,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:58:05,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18454844] [2020-11-06 22:58:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:58:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,196 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:58:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:58:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:58:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:58:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:58:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:58:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:58:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:58:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:58:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:58:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:58:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:58:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:58:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:58:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:58:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:58:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:58:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:58:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:58:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:58:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:58:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:58:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:58:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:58:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:58:06,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18454844] [2020-11-06 22:58:06,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:58:06,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:58:06,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782512061] [2020-11-06 22:58:06,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:58:06,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:58:06,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:58:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:58:06,591 INFO L87 Difference]: Start difference. First operand 10676 states and 16948 transitions. Second operand 10 states. [2020-11-06 22:58:06,996 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:58:07,160 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:58:07,380 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:58:08,535 WARN L194 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-11-06 22:58:09,489 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-11-06 22:58:12,835 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:58:15,892 WARN L194 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-11-06 22:58:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:58:30,846 INFO L93 Difference]: Finished difference Result 45413 states and 74622 transitions. [2020-11-06 22:58:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:58:30,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:58:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:58:30,979 INFO L225 Difference]: With dead ends: 45413 [2020-11-06 22:58:30,979 INFO L226 Difference]: Without dead ends: 34771 [2020-11-06 22:58:31,030 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 [2020-11-06 22:58:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34771 states. [2020-11-06 22:58:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34771 to 24390. [2020-11-06 22:58:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24390 states. [2020-11-06 22:58:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24390 states to 24390 states and 40520 transitions. [2020-11-06 22:58:35,636 INFO L78 Accepts]: Start accepts. Automaton has 24390 states and 40520 transitions. Word has length 255 [2020-11-06 22:58:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:58:35,636 INFO L481 AbstractCegarLoop]: Abstraction has 24390 states and 40520 transitions. [2020-11-06 22:58:35,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:58:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 24390 states and 40520 transitions. [2020-11-06 22:58:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:58:35,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:58:35,644 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] [2020-11-06 22:58:35,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-06 22:58:35,644 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:58:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:58:35,645 INFO L82 PathProgramCache]: Analyzing trace with hash 894184054, now seen corresponding path program 1 times [2020-11-06 22:58:35,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:58:35,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640229759] [2020-11-06 22:58:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:58:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,061 WARN L194 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:58:36,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:58:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:58:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:58:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:58:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:58:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:58:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:58:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:58:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:58:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:58:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:58:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:58:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:58:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:58:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:58:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:58:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:58:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:58:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:58:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:58:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:58:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:58:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:58:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:58:36,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640229759] [2020-11-06 22:58:36,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:58:36,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:58:36,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717500121] [2020-11-06 22:58:36,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:58:36,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:58:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:58:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:58:36,456 INFO L87 Difference]: Start difference. First operand 24390 states and 40520 transitions. Second operand 10 states. [2020-11-06 22:58:36,864 WARN L194 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-11-06 22:58:37,026 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:58:37,246 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-06 22:58:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:58:51,300 INFO L93 Difference]: Finished difference Result 58814 states and 99737 transitions. [2020-11-06 22:58:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:58:51,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:58:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:58:51,430 INFO L225 Difference]: With dead ends: 58814 [2020-11-06 22:58:51,430 INFO L226 Difference]: Without dead ends: 34458 [2020-11-06 22:58:51,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:58:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34458 states. [2020-11-06 22:58:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34458 to 24390. [2020-11-06 22:58:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24390 states. [2020-11-06 22:58:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24390 states to 24390 states and 40002 transitions. [2020-11-06 22:58:56,075 INFO L78 Accepts]: Start accepts. Automaton has 24390 states and 40002 transitions. Word has length 255 [2020-11-06 22:58:56,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:58:56,075 INFO L481 AbstractCegarLoop]: Abstraction has 24390 states and 40002 transitions. [2020-11-06 22:58:56,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:58:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24390 states and 40002 transitions. [2020-11-06 22:58:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:58:56,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:58:56,083 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] [2020-11-06 22:58:56,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-06 22:58:56,083 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:58:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:58:56,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1449005130, now seen corresponding path program 1 times [2020-11-06 22:58:56,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:58:56,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102426178] [2020-11-06 22:58:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:58:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,497 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:58:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:58:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:58:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:58:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:58:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:58:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:58:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:58:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:58:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:58:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:58:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:58:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:58:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:58:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:58:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:58:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:58:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:58:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:58:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:58:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:58:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:58:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:58:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:58:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:58:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:58:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102426178] [2020-11-06 22:58:56,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:58:56,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:58:56,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831421820] [2020-11-06 22:58:56,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:58:56,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:58:56,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:58:56,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:58:56,941 INFO L87 Difference]: Start difference. First operand 24390 states and 40002 transitions. Second operand 10 states. [2020-11-06 22:58:57,337 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:58:57,643 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:58:57,867 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:58:58,964 WARN L194 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-11-06 22:58:59,895 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-11-06 22:59:03,608 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:59:07,833 WARN L194 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-11-06 22:59:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:59:29,911 INFO L93 Difference]: Finished difference Result 102027 states and 173036 transitions. [2020-11-06 22:59:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:59:29,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 22:59:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:59:30,187 INFO L225 Difference]: With dead ends: 102027 [2020-11-06 22:59:30,187 INFO L226 Difference]: Without dead ends: 77671 [2020-11-06 22:59:30,283 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 [2020-11-06 22:59:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77671 states. [2020-11-06 22:59:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77671 to 57002. [2020-11-06 22:59:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57002 states. [2020-11-06 22:59:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57002 states to 57002 states and 99080 transitions. [2020-11-06 22:59:39,929 INFO L78 Accepts]: Start accepts. Automaton has 57002 states and 99080 transitions. Word has length 255 [2020-11-06 22:59:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:59:39,930 INFO L481 AbstractCegarLoop]: Abstraction has 57002 states and 99080 transitions. [2020-11-06 22:59:39,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:59:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 57002 states and 99080 transitions. [2020-11-06 22:59:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:59:39,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:59:39,944 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] [2020-11-06 22:59:39,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-06 22:59:39,944 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:59:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:59:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1972296564, now seen corresponding path program 1 times [2020-11-06 22:59:39,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:59:39,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359288654] [2020-11-06 22:59:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:59:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,451 WARN L194 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 22:59:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:59:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:59:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:59:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:59:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:59:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 22:59:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:59:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 22:59:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:59:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:59:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 22:59:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 22:59:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:59:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 22:59:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 22:59:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 22:59:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 22:59:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 22:59:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 22:59:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 22:59:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 22:59:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 22:59:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 22:59:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:59:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:59:40,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359288654] [2020-11-06 22:59:40,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:59:40,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:59:40,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598670623] [2020-11-06 22:59:40,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:59:40,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:59:40,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:59:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:59:40,849 INFO L87 Difference]: Start difference. First operand 57002 states and 99080 transitions. Second operand 10 states. [2020-11-06 22:59:41,259 WARN L194 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 22:59:41,424 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:59:41,657 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 22:59:43,012 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2020-11-06 22:59:43,810 WARN L194 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-11-06 22:59:47,420 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 22:59:53,313 WARN L194 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2020-11-06 23:00:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:00:25,813 INFO L93 Difference]: Finished difference Result 235505 states and 423502 transitions. [2020-11-06 23:00:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 23:00:25,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 23:00:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:00:26,637 INFO L225 Difference]: With dead ends: 235505 [2020-11-06 23:00:26,637 INFO L226 Difference]: Without dead ends: 178537 [2020-11-06 23:00:26,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-11-06 23:00:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178537 states. [2020-11-06 23:00:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178537 to 137292. [2020-11-06 23:00:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137292 states. [2020-11-06 23:00:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137292 states to 137292 states and 256708 transitions. [2020-11-06 23:00:47,020 INFO L78 Accepts]: Start accepts. Automaton has 137292 states and 256708 transitions. Word has length 255 [2020-11-06 23:00:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:00:47,020 INFO L481 AbstractCegarLoop]: Abstraction has 137292 states and 256708 transitions. [2020-11-06 23:00:47,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:00:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 137292 states and 256708 transitions. [2020-11-06 23:00:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 23:00:47,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:00:47,044 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] [2020-11-06 23:00:47,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-06 23:00:47,045 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:00:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:00:47,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1251377142, now seen corresponding path program 1 times [2020-11-06 23:00:47,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 23:00:47,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62770699] [2020-11-06 23:00:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:00:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,694 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-06 23:00:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:00:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 23:00:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 23:00:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 23:00:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 23:00:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-06 23:00:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 23:00:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-06 23:00:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 23:00:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 23:00:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-06 23:00:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-06 23:00:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 23:00:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-06 23:00:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-06 23:00:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 23:00:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:00:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-06 23:00:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:00:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-06 23:00:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-06 23:00:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-06 23:00:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-06 23:00:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:00:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:00:48,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62770699] [2020-11-06 23:00:48,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:00:48,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:00:48,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147544195] [2020-11-06 23:00:48,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:00:48,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 23:00:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:00:48,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:00:48,188 INFO L87 Difference]: Start difference. First operand 137292 states and 256708 transitions. Second operand 10 states. [2020-11-06 23:00:48,607 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-06 23:00:48,774 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 23:00:49,004 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-06 23:00:49,755 WARN L194 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-11-06 23:00:50,478 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-11-06 23:00:55,196 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-06 23:01:05,087 WARN L194 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-11-06 23:02:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:02:06,449 INFO L93 Difference]: Finished difference Result 565122 states and 1101676 transitions. [2020-11-06 23:02:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 23:02:06,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2020-11-06 23:02:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:02:08,673 INFO L225 Difference]: With dead ends: 565122 [2020-11-06 23:02:08,673 INFO L226 Difference]: Without dead ends: 427864 [2020-11-06 23:02:09,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-11-06 23:02:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427864 states.