java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/kundu2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:28:56,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:28:56,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:28:56,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:28:56,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:28:56,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:28:56,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:28:56,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:28:56,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:28:56,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:28:56,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:28:56,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:28:56,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:28:56,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:28:56,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:28:56,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:28:56,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:28:56,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:28:56,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:28:56,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:28:56,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:28:56,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:28:56,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:28:56,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:28:56,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 06:28:56,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 06:28:56,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 06:28:56,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 06:28:56,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 06:28:56,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 06:28:56,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 06:28:56,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 06:28:56,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 06:28:56,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 06:28:56,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 06:28:56,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 06:28:56,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 06:28:56,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 06:28:56,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:28:56,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:28:56,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:28:56,497 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 [2019-09-08 06:28:56,524 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:28:56,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:28:56,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:28:56,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:28:56,528 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:28:56,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:28:56,529 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:28:56,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:28:56,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:28:56,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:28:56,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:28:56,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:28:56,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:28:56,532 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:28:56,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:28:56,532 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:28:56,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:28:56,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:28:56,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:28:56,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:28:56,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:28:56,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:28:56,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:28:56,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:28:56,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:28:56,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:28:56,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:28:56,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:28:56,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:28:56,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:28:56,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:28:56,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:28:56,635 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:28:56,636 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:28:56,637 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/kundu2.cil.c [2019-09-08 06:28:56,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45846dff5/3edb78dce6d0489a86b9cbfae06da121/FLAGc9d905310 [2019-09-08 06:28:57,268 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:28:57,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c [2019-09-08 06:28:57,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45846dff5/3edb78dce6d0489a86b9cbfae06da121/FLAGc9d905310 [2019-09-08 06:28:57,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45846dff5/3edb78dce6d0489a86b9cbfae06da121 [2019-09-08 06:28:57,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:28:57,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:28:57,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:28:57,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:28:57,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:28:57,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:28:57" (1/1) ... [2019-09-08 06:28:57,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ffce86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:57, skipping insertion in model container [2019-09-08 06:28:57,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:28:57" (1/1) ... [2019-09-08 06:28:57,628 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:28:57,661 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:28:57,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:28:57,867 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:28:58,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:28:58,041 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:28:58,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58 WrapperNode [2019-09-08 06:28:58,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:28:58,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:28:58,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:28:58,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:28:58,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (1/1) ... [2019-09-08 06:28:58,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:28:58,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:28:58,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:28:58,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:28:58,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (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 [2019-09-08 06:28:58,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:28:58,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:28:58,178 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-09-08 06:28:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure read_data [2019-09-08 06:28:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2019-09-08 06:28:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P_1 [2019-09-08 06:28:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_1_triggered [2019-09-08 06:28:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P_2 [2019-09-08 06:28:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_2_triggered [2019-09-08 06:28:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure C_1 [2019-09-08 06:28:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_C_1_triggered [2019-09-08 06:28:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-09-08 06:28:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-09-08 06:28:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-09-08 06:28:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-09-08 06:28:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-09-08 06:28:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-09-08 06:28:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-09-08 06:28:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-09-08 06:28:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-09-08 06:28:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-09-08 06:28:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-09-08 06:28:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-09-08 06:28:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-09-08 06:28:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:28:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:28:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 06:28:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-09-08 06:28:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-09-08 06:28:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_data [2019-09-08 06:28:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2019-09-08 06:28:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure P_1 [2019-09-08 06:28:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_1_triggered [2019-09-08 06:28:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure P_2 [2019-09-08 06:28:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_2_triggered [2019-09-08 06:28:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure C_1 [2019-09-08 06:28:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_C_1_triggered [2019-09-08 06:28:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-09-08 06:28:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:28:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:28:58,732 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:28:58,732 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-08 06:28:58,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:28:58 BoogieIcfgContainer [2019-09-08 06:28:58,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:28:58,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:28:58,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:28:58,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:28:58,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:28:57" (1/3) ... [2019-09-08 06:28:58,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2358178f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:28:58, skipping insertion in model container [2019-09-08 06:28:58,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:28:58" (2/3) ... [2019-09-08 06:28:58,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2358178f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:28:58, skipping insertion in model container [2019-09-08 06:28:58,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:28:58" (3/3) ... [2019-09-08 06:28:58,741 INFO L109 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2019-09-08 06:28:58,751 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:28:58,759 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:28:58,775 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:28:58,809 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:28:58,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:28:58,810 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:28:58,810 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:28:58,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:28:58,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:28:58,811 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:28:58,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:28:58,811 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:28:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-09-08 06:28:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-08 06:28:58,847 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:28:58,848 INFO L399 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] [2019-09-08 06:28:58,851 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:28:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:28:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1619619400, now seen corresponding path program 1 times [2019-09-08 06:28:58,859 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:28:58,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:28:58,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:28:58,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:28:58,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:28:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:28:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:28:59,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:28:59,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 06:28:59,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:28:59,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:28:59,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:28:59,194 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2019-09-08 06:28:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:28:59,680 INFO L93 Difference]: Finished difference Result 493 states and 700 transitions. [2019-09-08 06:28:59,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 06:28:59,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2019-09-08 06:28:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:28:59,705 INFO L225 Difference]: With dead ends: 493 [2019-09-08 06:28:59,705 INFO L226 Difference]: Without dead ends: 319 [2019-09-08 06:28:59,711 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:28:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2019-09-08 06:28:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 312. [2019-09-08 06:28:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2019-09-08 06:28:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 410 transitions. [2019-09-08 06:28:59,807 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 410 transitions. Word has length 82 [2019-09-08 06:28:59,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:28:59,807 INFO L475 AbstractCegarLoop]: Abstraction has 312 states and 410 transitions. [2019-09-08 06:28:59,807 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:28:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 410 transitions. [2019-09-08 06:28:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-08 06:28:59,812 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:28:59,812 INFO L399 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] [2019-09-08 06:28:59,812 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:28:59,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:28:59,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1801870201, now seen corresponding path program 1 times [2019-09-08 06:28:59,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:28:59,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:28:59,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:28:59,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:28:59,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:28:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:28:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:28:59,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:28:59,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 06:28:59,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:28:59,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:28:59,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:28:59,993 INFO L87 Difference]: Start difference. First operand 312 states and 410 transitions. Second operand 4 states. [2019-09-08 06:29:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:00,314 INFO L93 Difference]: Finished difference Result 881 states and 1195 transitions. [2019-09-08 06:29:00,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 06:29:00,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2019-09-08 06:29:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:00,321 INFO L225 Difference]: With dead ends: 881 [2019-09-08 06:29:00,321 INFO L226 Difference]: Without dead ends: 590 [2019-09-08 06:29:00,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:29:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-09-08 06:29:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 565. [2019-09-08 06:29:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2019-09-08 06:29:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 735 transitions. [2019-09-08 06:29:00,397 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 735 transitions. Word has length 82 [2019-09-08 06:29:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:00,398 INFO L475 AbstractCegarLoop]: Abstraction has 565 states and 735 transitions. [2019-09-08 06:29:00,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:29:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 735 transitions. [2019-09-08 06:29:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 06:29:00,409 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:00,409 INFO L399 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] [2019-09-08 06:29:00,410 INFO L418 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1148563485, now seen corresponding path program 1 times [2019-09-08 06:29:00,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:00,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:00,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:00,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:00,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:29:00,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:00,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 06:29:00,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:29:00,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:29:00,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:29:00,575 INFO L87 Difference]: Start difference. First operand 565 states and 735 transitions. Second operand 6 states. [2019-09-08 06:29:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:00,691 INFO L93 Difference]: Finished difference Result 1129 states and 1502 transitions. [2019-09-08 06:29:00,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 06:29:00,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-09-08 06:29:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:00,701 INFO L225 Difference]: With dead ends: 1129 [2019-09-08 06:29:00,701 INFO L226 Difference]: Without dead ends: 585 [2019-09-08 06:29:00,704 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 06:29:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-09-08 06:29:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 575. [2019-09-08 06:29:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2019-09-08 06:29:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 743 transitions. [2019-09-08 06:29:00,750 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 743 transitions. Word has length 83 [2019-09-08 06:29:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:00,750 INFO L475 AbstractCegarLoop]: Abstraction has 575 states and 743 transitions. [2019-09-08 06:29:00,750 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:29:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 743 transitions. [2019-09-08 06:29:00,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 06:29:00,752 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:00,752 INFO L399 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] [2019-09-08 06:29:00,753 INFO L418 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:00,753 INFO L82 PathProgramCache]: Analyzing trace with hash -223243813, now seen corresponding path program 1 times [2019-09-08 06:29:00,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:00,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:00,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:00,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:00,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:29:00,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:00,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 06:29:00,862 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:29:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:29:00,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:29:00,863 INFO L87 Difference]: Start difference. First operand 575 states and 743 transitions. Second operand 6 states. [2019-09-08 06:29:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:01,021 INFO L93 Difference]: Finished difference Result 1504 states and 1996 transitions. [2019-09-08 06:29:01,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 06:29:01,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-09-08 06:29:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:01,033 INFO L225 Difference]: With dead ends: 1504 [2019-09-08 06:29:01,033 INFO L226 Difference]: Without dead ends: 951 [2019-09-08 06:29:01,036 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:29:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2019-09-08 06:29:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 927. [2019-09-08 06:29:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2019-09-08 06:29:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1213 transitions. [2019-09-08 06:29:01,109 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1213 transitions. Word has length 83 [2019-09-08 06:29:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:01,111 INFO L475 AbstractCegarLoop]: Abstraction has 927 states and 1213 transitions. [2019-09-08 06:29:01,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:29:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1213 transitions. [2019-09-08 06:29:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 06:29:01,119 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:01,119 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:01,119 INFO L418 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:01,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1894736262, now seen corresponding path program 1 times [2019-09-08 06:29:01,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:01,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:01,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:01,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:01,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:29:01,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:01,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 06:29:01,295 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:29:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:29:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:29:01,296 INFO L87 Difference]: Start difference. First operand 927 states and 1213 transitions. Second operand 8 states. [2019-09-08 06:29:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:02,880 INFO L93 Difference]: Finished difference Result 2914 states and 4213 transitions. [2019-09-08 06:29:02,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 06:29:02,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2019-09-08 06:29:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:02,901 INFO L225 Difference]: With dead ends: 2914 [2019-09-08 06:29:02,901 INFO L226 Difference]: Without dead ends: 2131 [2019-09-08 06:29:02,910 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:29:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2019-09-08 06:29:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2014. [2019-09-08 06:29:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2019-09-08 06:29:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2850 transitions. [2019-09-08 06:29:03,077 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2850 transitions. Word has length 96 [2019-09-08 06:29:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:03,078 INFO L475 AbstractCegarLoop]: Abstraction has 2014 states and 2850 transitions. [2019-09-08 06:29:03,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:29:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2850 transitions. [2019-09-08 06:29:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-08 06:29:03,082 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:03,082 INFO L399 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] [2019-09-08 06:29:03,083 INFO L418 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1165049387, now seen corresponding path program 1 times [2019-09-08 06:29:03,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:03,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:03,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:03,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:03,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:29:03,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:03,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 06:29:03,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:29:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:29:03,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:29:03,325 INFO L87 Difference]: Start difference. First operand 2014 states and 2850 transitions. Second operand 8 states. [2019-09-08 06:29:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:05,382 INFO L93 Difference]: Finished difference Result 4182 states and 6347 transitions. [2019-09-08 06:29:05,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 06:29:05,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-09-08 06:29:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:05,403 INFO L225 Difference]: With dead ends: 4182 [2019-09-08 06:29:05,403 INFO L226 Difference]: Without dead ends: 2311 [2019-09-08 06:29:05,416 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:29:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2019-09-08 06:29:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2116. [2019-09-08 06:29:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2116 states. [2019-09-08 06:29:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3075 transitions. [2019-09-08 06:29:05,553 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3075 transitions. Word has length 101 [2019-09-08 06:29:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:05,553 INFO L475 AbstractCegarLoop]: Abstraction has 2116 states and 3075 transitions. [2019-09-08 06:29:05,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:29:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3075 transitions. [2019-09-08 06:29:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 06:29:05,556 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:05,556 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:05,556 INFO L418 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:05,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1774230569, now seen corresponding path program 1 times [2019-09-08 06:29:05,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:05,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:05,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:05,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:05,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 06:29:05,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:29:05,612 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:29:05,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:05,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-08 06:29:05,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:29:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 06:29:05,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:29:05,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-09-08 06:29:05,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 06:29:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 06:29:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 06:29:05,801 INFO L87 Difference]: Start difference. First operand 2116 states and 3075 transitions. Second operand 3 states. [2019-09-08 06:29:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:06,075 INFO L93 Difference]: Finished difference Result 6094 states and 9798 transitions. [2019-09-08 06:29:06,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 06:29:06,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-08 06:29:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:06,124 INFO L225 Difference]: With dead ends: 6094 [2019-09-08 06:29:06,124 INFO L226 Difference]: Without dead ends: 4000 [2019-09-08 06:29:06,156 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 06:29:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2019-09-08 06:29:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3995. [2019-09-08 06:29:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2019-09-08 06:29:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 6234 transitions. [2019-09-08 06:29:06,586 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 6234 transitions. Word has length 104 [2019-09-08 06:29:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:06,586 INFO L475 AbstractCegarLoop]: Abstraction has 3995 states and 6234 transitions. [2019-09-08 06:29:06,587 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 06:29:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 6234 transitions. [2019-09-08 06:29:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 06:29:06,591 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:06,591 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:06,591 INFO L418 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1882546839, now seen corresponding path program 1 times [2019-09-08 06:29:06,592 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:06,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:06,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:06,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:06,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 06:29:06,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:06,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 06:29:06,653 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:29:06,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:29:06,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:29:06,654 INFO L87 Difference]: Start difference. First operand 3995 states and 6234 transitions. Second operand 4 states. [2019-09-08 06:29:06,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:07,000 INFO L93 Difference]: Finished difference Result 7962 states and 12428 transitions. [2019-09-08 06:29:07,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 06:29:07,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-09-08 06:29:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:07,038 INFO L225 Difference]: With dead ends: 7962 [2019-09-08 06:29:07,038 INFO L226 Difference]: Without dead ends: 3988 [2019-09-08 06:29:07,074 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:29:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2019-09-08 06:29:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3988. [2019-09-08 06:29:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3988 states. [2019-09-08 06:29:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 6220 transitions. [2019-09-08 06:29:07,524 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 6220 transitions. Word has length 106 [2019-09-08 06:29:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:07,524 INFO L475 AbstractCegarLoop]: Abstraction has 3988 states and 6220 transitions. [2019-09-08 06:29:07,525 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:29:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 6220 transitions. [2019-09-08 06:29:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 06:29:07,528 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:07,528 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:07,528 INFO L418 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:07,529 INFO L82 PathProgramCache]: Analyzing trace with hash 535357227, now seen corresponding path program 1 times [2019-09-08 06:29:07,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:07,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:07,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:07,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:07,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:29:07,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:29:07,624 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:29:07,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:29:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:07,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:29:07,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:29:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:29:07,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:29:07,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-08 06:29:07,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:29:07,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:29:07,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:29:07,843 INFO L87 Difference]: Start difference. First operand 3988 states and 6220 transitions. Second operand 8 states. [2019-09-08 06:29:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:16,246 INFO L93 Difference]: Finished difference Result 29605 states and 90340 transitions. [2019-09-08 06:29:16,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-08 06:29:16,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2019-09-08 06:29:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:16,744 INFO L225 Difference]: With dead ends: 29605 [2019-09-08 06:29:16,745 INFO L226 Difference]: Without dead ends: 25638 [2019-09-08 06:29:17,003 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-09-08 06:29:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25638 states. [2019-09-08 06:29:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25638 to 24908. [2019-09-08 06:29:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24908 states. [2019-09-08 06:29:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24908 states to 24908 states and 68206 transitions. [2019-09-08 06:29:21,515 INFO L78 Accepts]: Start accepts. Automaton has 24908 states and 68206 transitions. Word has length 106 [2019-09-08 06:29:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:21,516 INFO L475 AbstractCegarLoop]: Abstraction has 24908 states and 68206 transitions. [2019-09-08 06:29:21,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:29:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 24908 states and 68206 transitions. [2019-09-08 06:29:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 06:29:21,524 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:21,524 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:21,524 INFO L418 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash -719656318, now seen corresponding path program 1 times [2019-09-08 06:29:21,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:21,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:21,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:21,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:21,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:29:21,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:21,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 06:29:21,634 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 06:29:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 06:29:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 06:29:21,635 INFO L87 Difference]: Start difference. First operand 24908 states and 68206 transitions. Second operand 7 states. [2019-09-08 06:29:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:26,625 INFO L93 Difference]: Finished difference Result 70362 states and 229493 transitions. [2019-09-08 06:29:26,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 06:29:26,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-09-08 06:29:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:27,243 INFO L225 Difference]: With dead ends: 70362 [2019-09-08 06:29:27,244 INFO L226 Difference]: Without dead ends: 46649 [2019-09-08 06:29:30,447 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:29:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46649 states. [2019-09-08 06:29:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46649 to 45847. [2019-09-08 06:29:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45847 states. [2019-09-08 06:29:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45847 states to 45847 states and 111676 transitions. [2019-09-08 06:29:37,360 INFO L78 Accepts]: Start accepts. Automaton has 45847 states and 111676 transitions. Word has length 112 [2019-09-08 06:29:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:37,361 INFO L475 AbstractCegarLoop]: Abstraction has 45847 states and 111676 transitions. [2019-09-08 06:29:37,361 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 06:29:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 45847 states and 111676 transitions. [2019-09-08 06:29:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 06:29:37,372 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:37,372 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:37,373 INFO L418 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1217934684, now seen corresponding path program 1 times [2019-09-08 06:29:37,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:37,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:37,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:37,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:37,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:29:37,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:29:37,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 06:29:37,535 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:29:37,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:29:37,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:29:37,536 INFO L87 Difference]: Start difference. First operand 45847 states and 111676 transitions. Second operand 8 states. [2019-09-08 06:29:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:29:47,155 INFO L93 Difference]: Finished difference Result 98511 states and 281860 transitions. [2019-09-08 06:29:47,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 06:29:47,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2019-09-08 06:29:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:29:47,851 INFO L225 Difference]: With dead ends: 98511 [2019-09-08 06:29:47,851 INFO L226 Difference]: Without dead ends: 48539 [2019-09-08 06:29:48,593 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:29:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48539 states. [2019-09-08 06:29:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48539 to 47865. [2019-09-08 06:29:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47865 states. [2019-09-08 06:29:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47865 states to 47865 states and 134306 transitions. [2019-09-08 06:29:55,827 INFO L78 Accepts]: Start accepts. Automaton has 47865 states and 134306 transitions. Word has length 116 [2019-09-08 06:29:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:29:55,828 INFO L475 AbstractCegarLoop]: Abstraction has 47865 states and 134306 transitions. [2019-09-08 06:29:55,828 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:29:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 47865 states and 134306 transitions. [2019-09-08 06:29:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-08 06:29:55,842 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:29:55,843 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:29:55,843 INFO L418 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:29:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:29:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1456232897, now seen corresponding path program 1 times [2019-09-08 06:29:55,844 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:29:55,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:29:55,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:55,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:55,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:29:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 06:29:55,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:29:55,963 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:29:55,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:29:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:29:56,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:29:56,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:29:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 06:29:57,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:29:57,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-08 06:29:57,271 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 06:29:57,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 06:29:57,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:29:57,272 INFO L87 Difference]: Start difference. First operand 47865 states and 134306 transitions. Second operand 9 states. [2019-09-08 06:30:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:30:40,218 INFO L93 Difference]: Finished difference Result 167249 states and 1265083 transitions. [2019-09-08 06:30:40,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 06:30:40,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2019-09-08 06:30:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:30:43,671 INFO L225 Difference]: With dead ends: 167249 [2019-09-08 06:30:43,671 INFO L226 Difference]: Without dead ends: 119411 [2019-09-08 06:30:55,749 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2019-09-08 06:30:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119411 states. [2019-09-08 06:31:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119411 to 116361. [2019-09-08 06:31:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116361 states. [2019-09-08 06:32:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116361 states to 116361 states and 826740 transitions. [2019-09-08 06:32:01,661 INFO L78 Accepts]: Start accepts. Automaton has 116361 states and 826740 transitions. Word has length 121 [2019-09-08 06:32:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:32:01,662 INFO L475 AbstractCegarLoop]: Abstraction has 116361 states and 826740 transitions. [2019-09-08 06:32:01,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 06:32:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 116361 states and 826740 transitions. [2019-09-08 06:32:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 06:32:01,676 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:32:01,676 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:32:01,676 INFO L418 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:32:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:32:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1440725386, now seen corresponding path program 1 times [2019-09-08 06:32:01,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:32:01,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:32:01,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:32:01,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:32:01,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:32:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:32:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 06:32:01,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:32:01,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 06:32:01,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:32:01,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:32:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:32:01,762 INFO L87 Difference]: Start difference. First operand 116361 states and 826740 transitions. Second operand 8 states. [2019-09-08 06:32:04,373 WARN L188 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 6