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 0.1.24-13a467a-m [2019-10-14 23:49:54,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:49:54,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:49:54,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:49:54,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:49:54,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:49:54,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:49:54,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:49:54,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:49:54,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:49:54,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:49:54,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:49:54,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:49:54,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:49:54,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:49:54,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:49:54,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:49:54,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:49:54,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:49:54,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:49:54,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:49:54,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:49:54,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:49:54,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:49:54,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:49:54,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:49:54,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:49:54,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:49:54,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:49:54,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:49:54,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:49:54,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:49:54,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:49:54,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:49:54,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:49:54,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:49:54,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:49:54,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:49:54,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:49:54,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:49:54,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:49:54,252 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 [2019-10-14 23:49:54,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:49:54,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:49:54,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:49:54,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:49:54,288 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:49:54,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:49:54,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:49:54,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:49:54,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:49:54,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:49:54,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:49:54,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:49:54,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:49:54,290 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:49:54,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:49:54,290 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:49:54,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:49:54,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:49:54,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:49:54,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:49:54,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:49:54,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:49:54,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:49:54,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:49:54,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:49:54,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:49:54,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:49:54,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:49:54,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:49:54,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:49:54,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:49:54,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:49:54,642 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:49:54,643 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:49:54,643 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/kundu2.cil.c [2019-10-14 23:49:54,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b157276dd/821d046758d94f7ab435ced02035bf69/FLAGe153e7f6c [2019-10-14 23:49:55,223 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:49:55,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c [2019-10-14 23:49:55,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b157276dd/821d046758d94f7ab435ced02035bf69/FLAGe153e7f6c [2019-10-14 23:49:55,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b157276dd/821d046758d94f7ab435ced02035bf69 [2019-10-14 23:49:55,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:49:55,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:49:55,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:55,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:49:55,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:49:55,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:55" (1/1) ... [2019-10-14 23:49:55,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0ede89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55, skipping insertion in model container [2019-10-14 23:49:55,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:55" (1/1) ... [2019-10-14 23:49:55,568 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:49:55,614 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:49:55,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:55,879 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:49:56,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:56,071 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:49:56,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56 WrapperNode [2019-10-14 23:49:56,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:56,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:49:56,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:49:56,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:49:56,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (1/1) ... [2019-10-14 23:49:56,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:49:56,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:49:56,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:49:56,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:49:56,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (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 [2019-10-14 23:49:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:49:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:49:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-14 23:49:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure read_data [2019-10-14 23:49:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2019-10-14 23:49:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P_1 [2019-10-14 23:49:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_1_triggered [2019-10-14 23:49:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P_2 [2019-10-14 23:49:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_2_triggered [2019-10-14 23:49:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure C_1 [2019-10-14 23:49:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure is_C_1_triggered [2019-10-14 23:49:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-14 23:49:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-14 23:49:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-14 23:49:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-14 23:49:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-14 23:49:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-14 23:49:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-14 23:49:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-14 23:49:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-14 23:49:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-14 23:49:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-14 23:49:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-14 23:49:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-14 23:49:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:49:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:49:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:49:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-14 23:49:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-14 23:49:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure read_data [2019-10-14 23:49:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2019-10-14 23:49:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure P_1 [2019-10-14 23:49:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_1_triggered [2019-10-14 23:49:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure P_2 [2019-10-14 23:49:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_2_triggered [2019-10-14 23:49:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure C_1 [2019-10-14 23:49:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure is_C_1_triggered [2019-10-14 23:49:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-14 23:49:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-14 23:49:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-14 23:49:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-14 23:49:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-14 23:49:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-14 23:49:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:49:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:49:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:49:56,812 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:49:56,812 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:49:56,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:56 BoogieIcfgContainer [2019-10-14 23:49:56,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:49:56,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:49:56,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:49:56,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:49:56,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:49:55" (1/3) ... [2019-10-14 23:49:56,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29421a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:56, skipping insertion in model container [2019-10-14 23:49:56,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:56" (2/3) ... [2019-10-14 23:49:56,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29421a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:56, skipping insertion in model container [2019-10-14 23:49:56,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:56" (3/3) ... [2019-10-14 23:49:56,822 INFO L109 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2019-10-14 23:49:56,832 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:49:56,841 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:49:56,852 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:49:56,879 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:49:56,880 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:49:56,880 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:49:56,880 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:49:56,881 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:49:56,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:49:56,881 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:49:56,881 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:49:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-10-14 23:49:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-14 23:49:56,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:56,918 INFO L380 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] [2019-10-14 23:49:56,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:56,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1619619400, now seen corresponding path program 1 times [2019-10-14 23:49:56,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:56,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820498325] [2019-10-14 23:49:56,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:56,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:56,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:49:57,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820498325] [2019-10-14 23:49:57,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:57,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:49:57,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584612102] [2019-10-14 23:49:57,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:49:57,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:49:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:49:57,649 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 7 states. [2019-10-14 23:49:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:59,820 INFO L93 Difference]: Finished difference Result 549 states and 795 transitions. [2019-10-14 23:49:59,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:49:59,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2019-10-14 23:49:59,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:59,842 INFO L225 Difference]: With dead ends: 549 [2019-10-14 23:49:59,842 INFO L226 Difference]: Without dead ends: 375 [2019-10-14 23:49:59,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:49:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-10-14 23:49:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 324. [2019-10-14 23:49:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-10-14 23:49:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 430 transitions. [2019-10-14 23:49:59,970 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 430 transitions. Word has length 82 [2019-10-14 23:49:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:59,971 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 430 transitions. [2019-10-14 23:49:59,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:49:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 430 transitions. [2019-10-14 23:49:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-14 23:49:59,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:59,987 INFO L380 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] [2019-10-14 23:49:59,987 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1801870201, now seen corresponding path program 1 times [2019-10-14 23:49:59,988 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:59,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250098890] [2019-10-14 23:49:59,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:59,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:59,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:00,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250098890] [2019-10-14 23:50:00,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:00,242 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:50:00,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256337304] [2019-10-14 23:50:00,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:50:00,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:00,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:50:00,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:50:00,245 INFO L87 Difference]: Start difference. First operand 324 states and 430 transitions. Second operand 7 states. [2019-10-14 23:50:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:02,064 INFO L93 Difference]: Finished difference Result 1001 states and 1392 transitions. [2019-10-14 23:50:02,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:50:02,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2019-10-14 23:50:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:02,076 INFO L225 Difference]: With dead ends: 1001 [2019-10-14 23:50:02,077 INFO L226 Difference]: Without dead ends: 698 [2019-10-14 23:50:02,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:50:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-14 23:50:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 613. [2019-10-14 23:50:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-14 23:50:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 815 transitions. [2019-10-14 23:50:02,190 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 815 transitions. Word has length 82 [2019-10-14 23:50:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:02,190 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 815 transitions. [2019-10-14 23:50:02,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:50:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 815 transitions. [2019-10-14 23:50:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:50:02,193 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:02,193 INFO L380 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] [2019-10-14 23:50:02,193 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1148563485, now seen corresponding path program 1 times [2019-10-14 23:50:02,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:02,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57994578] [2019-10-14 23:50:02,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:02,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:02,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:02,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57994578] [2019-10-14 23:50:02,549 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:02,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:50:02,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427037270] [2019-10-14 23:50:02,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:50:02,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:50:02,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:50:02,552 INFO L87 Difference]: Start difference. First operand 613 states and 815 transitions. Second operand 9 states. [2019-10-14 23:50:04,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:04,125 INFO L93 Difference]: Finished difference Result 1289 states and 1763 transitions. [2019-10-14 23:50:04,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:50:04,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-10-14 23:50:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:04,132 INFO L225 Difference]: With dead ends: 1289 [2019-10-14 23:50:04,133 INFO L226 Difference]: Without dead ends: 697 [2019-10-14 23:50:04,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:50:04,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-14 23:50:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 623. [2019-10-14 23:50:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-14 23:50:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 823 transitions. [2019-10-14 23:50:04,200 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 823 transitions. Word has length 83 [2019-10-14 23:50:04,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:04,201 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 823 transitions. [2019-10-14 23:50:04,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:50:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 823 transitions. [2019-10-14 23:50:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:50:04,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:04,203 INFO L380 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] [2019-10-14 23:50:04,203 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:04,204 INFO L82 PathProgramCache]: Analyzing trace with hash -223243813, now seen corresponding path program 1 times [2019-10-14 23:50:04,204 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:04,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452336282] [2019-10-14 23:50:04,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:04,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:04,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:04,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452336282] [2019-10-14 23:50:04,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:04,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:50:04,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212175619] [2019-10-14 23:50:04,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:50:04,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:50:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:50:04,423 INFO L87 Difference]: Start difference. First operand 623 states and 823 transitions. Second operand 9 states. [2019-10-14 23:50:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:06,633 INFO L93 Difference]: Finished difference Result 1738 states and 2371 transitions. [2019-10-14 23:50:06,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:50:06,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-10-14 23:50:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:06,650 INFO L225 Difference]: With dead ends: 1738 [2019-10-14 23:50:06,650 INFO L226 Difference]: Without dead ends: 1137 [2019-10-14 23:50:06,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:50:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2019-10-14 23:50:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 999. [2019-10-14 23:50:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2019-10-14 23:50:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1333 transitions. [2019-10-14 23:50:06,782 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1333 transitions. Word has length 83 [2019-10-14 23:50:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:06,785 INFO L462 AbstractCegarLoop]: Abstraction has 999 states and 1333 transitions. [2019-10-14 23:50:06,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:50:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1333 transitions. [2019-10-14 23:50:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-14 23:50:06,788 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:06,788 INFO L380 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] [2019-10-14 23:50:06,789 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1894736262, now seen corresponding path program 1 times [2019-10-14 23:50:06,789 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:06,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999699034] [2019-10-14 23:50:06,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:06,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:06,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:07,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999699034] [2019-10-14 23:50:07,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265401890] [2019-10-14 23:50:07,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-14 23:50:07,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:50:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:07,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:50:07,546 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 15 [2019-10-14 23:50:07,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944415263] [2019-10-14 23:50:07,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:50:07,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:50:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:50:07,549 INFO L87 Difference]: Start difference. First operand 999 states and 1333 transitions. Second operand 8 states. [2019-10-14 23:50:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:09,716 INFO L93 Difference]: Finished difference Result 3262 states and 4933 transitions. [2019-10-14 23:50:09,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:50:09,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2019-10-14 23:50:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:09,739 INFO L225 Difference]: With dead ends: 3262 [2019-10-14 23:50:09,739 INFO L226 Difference]: Without dead ends: 2407 [2019-10-14 23:50:09,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:50:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2019-10-14 23:50:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2122. [2019-10-14 23:50:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2019-10-14 23:50:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3075 transitions. [2019-10-14 23:50:10,018 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3075 transitions. Word has length 96 [2019-10-14 23:50:10,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:10,019 INFO L462 AbstractCegarLoop]: Abstraction has 2122 states and 3075 transitions. [2019-10-14 23:50:10,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:50:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3075 transitions. [2019-10-14 23:50:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-14 23:50:10,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:10,023 INFO L380 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] [2019-10-14 23:50:10,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:10,239 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:10,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:10,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1165049387, now seen corresponding path program 1 times [2019-10-14 23:50:10,240 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:10,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4547665] [2019-10-14 23:50:10,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:10,241 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:10,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:10,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4547665] [2019-10-14 23:50:10,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:10,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:50:10,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411446684] [2019-10-14 23:50:10,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:50:10,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:10,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:50:10,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:50:10,608 INFO L87 Difference]: Start difference. First operand 2122 states and 3075 transitions. Second operand 14 states. [2019-10-14 23:50:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:16,623 INFO L93 Difference]: Finished difference Result 6147 states and 9798 transitions. [2019-10-14 23:50:16,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-14 23:50:16,624 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2019-10-14 23:50:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:16,656 INFO L225 Difference]: With dead ends: 6147 [2019-10-14 23:50:16,656 INFO L226 Difference]: Without dead ends: 4160 [2019-10-14 23:50:16,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=466, Invalid=1790, Unknown=0, NotChecked=0, Total=2256 [2019-10-14 23:50:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2019-10-14 23:50:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3190. [2019-10-14 23:50:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3190 states. [2019-10-14 23:50:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4811 transitions. [2019-10-14 23:50:17,016 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4811 transitions. Word has length 101 [2019-10-14 23:50:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:17,017 INFO L462 AbstractCegarLoop]: Abstraction has 3190 states and 4811 transitions. [2019-10-14 23:50:17,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 23:50:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4811 transitions. [2019-10-14 23:50:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:50:17,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:17,020 INFO L380 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] [2019-10-14 23:50:17,020 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:17,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1774230569, now seen corresponding path program 1 times [2019-10-14 23:50:17,024 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:17,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890521636] [2019-10-14 23:50:17,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:17,025 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:17,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,209 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-14 23:50:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:50:17,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890521636] [2019-10-14 23:50:17,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520330717] [2019-10-14 23:50:17,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:50:17,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:50:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:50:17,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:50:17,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2019-10-14 23:50:17,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786199331] [2019-10-14 23:50:17,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:50:17,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:17,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:50:17,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:50:17,467 INFO L87 Difference]: Start difference. First operand 3190 states and 4811 transitions. Second operand 3 states. [2019-10-14 23:50:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:17,848 INFO L93 Difference]: Finished difference Result 9205 states and 15746 transitions. [2019-10-14 23:50:17,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:50:17,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-10-14 23:50:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:17,904 INFO L225 Difference]: With dead ends: 9205 [2019-10-14 23:50:17,904 INFO L226 Difference]: Without dead ends: 6037 [2019-10-14 23:50:17,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:50:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6037 states. [2019-10-14 23:50:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6037 to 6032. [2019-10-14 23:50:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6032 states. [2019-10-14 23:50:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 9962 transitions. [2019-10-14 23:50:18,693 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 9962 transitions. Word has length 104 [2019-10-14 23:50:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:18,694 INFO L462 AbstractCegarLoop]: Abstraction has 6032 states and 9962 transitions. [2019-10-14 23:50:18,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:50:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 9962 transitions. [2019-10-14 23:50:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-14 23:50:18,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:18,700 INFO L380 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] [2019-10-14 23:50:18,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:18,904 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:18,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:18,905 INFO L82 PathProgramCache]: Analyzing trace with hash 535357227, now seen corresponding path program 1 times [2019-10-14 23:50:18,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:18,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959028683] [2019-10-14 23:50:18,907 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:18,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:18,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:50:19,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959028683] [2019-10-14 23:50:19,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150372180] [2019-10-14 23:50:19,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:19,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-14 23:50:19,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:50:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:19,343 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:50:19,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2019-10-14 23:50:19,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535357182] [2019-10-14 23:50:19,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:50:19,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:19,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:50:19,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:50:19,344 INFO L87 Difference]: Start difference. First operand 6032 states and 9962 transitions. Second operand 3 states. [2019-10-14 23:50:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:20,074 INFO L93 Difference]: Finished difference Result 16856 states and 31862 transitions. [2019-10-14 23:50:20,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:50:20,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-10-14 23:50:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:20,168 INFO L225 Difference]: With dead ends: 16856 [2019-10-14 23:50:20,169 INFO L226 Difference]: Without dead ends: 10853 [2019-10-14 23:50:20,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:50:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2019-10-14 23:50:21,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 10826. [2019-10-14 23:50:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10826 states. [2019-10-14 23:50:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10826 states to 10826 states and 18541 transitions. [2019-10-14 23:50:21,469 INFO L78 Accepts]: Start accepts. Automaton has 10826 states and 18541 transitions. Word has length 106 [2019-10-14 23:50:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:21,469 INFO L462 AbstractCegarLoop]: Abstraction has 10826 states and 18541 transitions. [2019-10-14 23:50:21,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:50:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10826 states and 18541 transitions. [2019-10-14 23:50:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-14 23:50:21,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:21,477 INFO L380 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] [2019-10-14 23:50:21,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:21,681 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1679546114, now seen corresponding path program 1 times [2019-10-14 23:50:21,682 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:21,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262933552] [2019-10-14 23:50:21,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:21,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:21,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,385 WARN L191 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-14 23:50:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:50:22,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262933552] [2019-10-14 23:50:22,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:22,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:22,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197407082] [2019-10-14 23:50:22,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:22,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:22,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:22,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:22,552 INFO L87 Difference]: Start difference. First operand 10826 states and 18541 transitions. Second operand 10 states. [2019-10-14 23:50:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:24,829 INFO L93 Difference]: Finished difference Result 24535 states and 42653 transitions. [2019-10-14 23:50:24,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:50:24,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2019-10-14 23:50:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:24,925 INFO L225 Difference]: With dead ends: 24535 [2019-10-14 23:50:24,925 INFO L226 Difference]: Without dead ends: 13734 [2019-10-14 23:50:24,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:50:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2019-10-14 23:50:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 12063. [2019-10-14 23:50:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12063 states. [2019-10-14 23:50:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12063 states to 12063 states and 20781 transitions. [2019-10-14 23:50:26,210 INFO L78 Accepts]: Start accepts. Automaton has 12063 states and 20781 transitions. Word has length 112 [2019-10-14 23:50:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:26,210 INFO L462 AbstractCegarLoop]: Abstraction has 12063 states and 20781 transitions. [2019-10-14 23:50:26,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12063 states and 20781 transitions. [2019-10-14 23:50:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-14 23:50:26,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:26,216 INFO L380 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] [2019-10-14 23:50:26,216 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:26,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:26,216 INFO L82 PathProgramCache]: Analyzing trace with hash -719656318, now seen corresponding path program 1 times [2019-10-14 23:50:26,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:26,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345175412] [2019-10-14 23:50:26,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:26,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:26,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:50:26,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345175412] [2019-10-14 23:50:26,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:26,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:50:26,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235219493] [2019-10-14 23:50:26,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:50:26,447 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:26,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:50:26,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:50:26,447 INFO L87 Difference]: Start difference. First operand 12063 states and 20781 transitions. Second operand 13 states.