/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:52:37,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:52:37,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:52:37,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:52:37,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:52:37,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:52:37,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:52:37,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:52:37,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:52:37,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:52:37,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:52:37,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:52:37,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:52:37,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:52:37,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:52:37,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:52:37,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:52:37,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:52:37,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:52:37,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:52:37,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:52:37,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:52:37,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:52:37,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:52:37,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:52:37,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:52:37,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:52:37,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:52:37,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:52:37,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:52:37,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:52:37,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:52:37,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:52:37,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:52:37,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:52:37,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:52:37,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:52:37,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:52:37,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:52:37,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:52:37,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:52:37,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:52:37,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:52:37,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:52:37,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:52:37,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:52:37,661 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:52:37,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:52:37,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:52:37,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:52:37,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:52:37,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:52:37,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:52:37,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:52:37,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:52:37,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:52:37,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:52:37,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:52:37,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:52:37,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:52:37,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:52:37,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:52:37,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:52:37,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:52:37,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:52:37,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:52:37,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:52:37,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:52:37,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:52:37,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:52:37,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:52:37,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:52:37,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:52:38,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:52:38,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:52:38,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:52:38,011 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:52:38,012 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-18 22:52:38,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d23a3c041/49c54355e9d042ebb33a3b36549b8a9f/FLAG0a22ae194 [2020-08-18 22:52:38,558 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:52:38,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-18 22:52:38,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d23a3c041/49c54355e9d042ebb33a3b36549b8a9f/FLAG0a22ae194 [2020-08-18 22:52:38,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d23a3c041/49c54355e9d042ebb33a3b36549b8a9f [2020-08-18 22:52:38,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:52:38,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:52:38,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:52:38,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:52:38,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:52:38,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:52:38" (1/1) ... [2020-08-18 22:52:38,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:38, skipping insertion in model container [2020-08-18 22:52:38,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:52:38" (1/1) ... [2020-08-18 22:52:38,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:52:39,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:52:39,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:52:39,269 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:52:39,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:52:39,436 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:52:39,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39 WrapperNode [2020-08-18 22:52:39,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:52:39,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:52:39,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:52:39,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:52:39,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... [2020-08-18 22:52:39,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:52:39,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:52:39,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:52:39,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:52:39,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:52:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:52:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-18 22:52:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 22:52:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 22:52:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 22:52:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 22:52:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 22:52:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 22:52:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 22:52:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 22:52:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 22:52:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 22:52:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 22:52:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 22:52:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 22:52:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:52:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:52:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:52:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 22:52:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 22:52:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 22:52:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-18 22:52:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 22:52:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 22:52:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 22:52:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 22:52:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:52:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:52:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:52:40,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:52:40,143 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 22:52:40,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:52:40 BoogieIcfgContainer [2020-08-18 22:52:40,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:52:40,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:52:40,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:52:40,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:52:40,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:52:38" (1/3) ... [2020-08-18 22:52:40,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca28d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:52:40, skipping insertion in model container [2020-08-18 22:52:40,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:39" (2/3) ... [2020-08-18 22:52:40,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca28d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:52:40, skipping insertion in model container [2020-08-18 22:52:40,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:52:40" (3/3) ... [2020-08-18 22:52:40,159 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-08-18 22:52:40,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:52:40,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:52:40,195 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:52:40,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:52:40,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:52:40,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:52:40,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:52:40,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:52:40,235 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:52:40,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:52:40,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:52:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 22:52:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:40,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:40,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:40,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:40,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1996614335, now seen corresponding path program 1 times [2020-08-18 22:52:40,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:40,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217672089] [2020-08-18 22:52:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:40,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217672089] [2020-08-18 22:52:40,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:40,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:52:40,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961509812] [2020-08-18 22:52:40,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:52:40,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:40,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:52:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:52:40,853 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-08-18 22:52:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:42,497 INFO L93 Difference]: Finished difference Result 412 states and 626 transitions. [2020-08-18 22:52:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:52:42,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 22:52:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:42,517 INFO L225 Difference]: With dead ends: 412 [2020-08-18 22:52:42,518 INFO L226 Difference]: Without dead ends: 247 [2020-08-18 22:52:42,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:52:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-08-18 22:52:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2020-08-18 22:52:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-18 22:52:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2020-08-18 22:52:42,622 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 90 [2020-08-18 22:52:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:42,623 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2020-08-18 22:52:42,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:52:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2020-08-18 22:52:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:42,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:42,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:42,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:52:42,629 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:42,629 INFO L82 PathProgramCache]: Analyzing trace with hash -387310403, now seen corresponding path program 1 times [2020-08-18 22:52:42,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:42,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969253750] [2020-08-18 22:52:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:42,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969253750] [2020-08-18 22:52:42,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:42,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:52:42,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731733138] [2020-08-18 22:52:42,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:52:42,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:42,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:52:42,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:52:42,927 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand 9 states. [2020-08-18 22:52:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:45,132 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2020-08-18 22:52:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:52:45,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-08-18 22:52:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:45,149 INFO L225 Difference]: With dead ends: 579 [2020-08-18 22:52:45,149 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 22:52:45,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:52:45,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 22:52:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 294. [2020-08-18 22:52:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 22:52:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 393 transitions. [2020-08-18 22:52:45,250 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 393 transitions. Word has length 90 [2020-08-18 22:52:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:45,250 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 393 transitions. [2020-08-18 22:52:45,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:52:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 393 transitions. [2020-08-18 22:52:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:45,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:45,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:45,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:52:45,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:45,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1952833149, now seen corresponding path program 1 times [2020-08-18 22:52:45,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:45,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235450099] [2020-08-18 22:52:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:45,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235450099] [2020-08-18 22:52:45,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:45,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:45,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406074118] [2020-08-18 22:52:45,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:45,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:45,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:45,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:45,451 INFO L87 Difference]: Start difference. First operand 294 states and 393 transitions. Second operand 10 states. [2020-08-18 22:52:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:46,707 INFO L93 Difference]: Finished difference Result 704 states and 993 transitions. [2020-08-18 22:52:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:52:46,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:46,712 INFO L225 Difference]: With dead ends: 704 [2020-08-18 22:52:46,712 INFO L226 Difference]: Without dead ends: 430 [2020-08-18 22:52:46,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:52:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-18 22:52:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 294. [2020-08-18 22:52:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 22:52:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2020-08-18 22:52:46,753 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 90 [2020-08-18 22:52:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:46,753 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2020-08-18 22:52:46,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2020-08-18 22:52:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:46,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:46,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:46,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:52:46,756 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash 227206333, now seen corresponding path program 1 times [2020-08-18 22:52:46,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:46,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002936912] [2020-08-18 22:52:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:47,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002936912] [2020-08-18 22:52:47,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:47,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:47,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012938450] [2020-08-18 22:52:47,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:47,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:47,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:47,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:47,014 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand 10 states. [2020-08-18 22:52:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:48,157 INFO L93 Difference]: Finished difference Result 700 states and 971 transitions. [2020-08-18 22:52:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:52:48,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:48,161 INFO L225 Difference]: With dead ends: 700 [2020-08-18 22:52:48,162 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 22:52:48,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:52:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 22:52:48,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-08-18 22:52:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 22:52:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 379 transitions. [2020-08-18 22:52:48,227 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 379 transitions. Word has length 90 [2020-08-18 22:52:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:48,228 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 379 transitions. [2020-08-18 22:52:48,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 379 transitions. [2020-08-18 22:52:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:48,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:48,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:48,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:52:48,242 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1418466941, now seen corresponding path program 1 times [2020-08-18 22:52:48,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:48,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742618657] [2020-08-18 22:52:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:48,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742618657] [2020-08-18 22:52:48,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:48,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:48,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172695937] [2020-08-18 22:52:48,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:48,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:48,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:48,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:48,442 INFO L87 Difference]: Start difference. First operand 294 states and 379 transitions. Second operand 10 states. [2020-08-18 22:52:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:50,096 INFO L93 Difference]: Finished difference Result 855 states and 1230 transitions. [2020-08-18 22:52:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:52:50,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:50,102 INFO L225 Difference]: With dead ends: 855 [2020-08-18 22:52:50,102 INFO L226 Difference]: Without dead ends: 581 [2020-08-18 22:52:50,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-18 22:52:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-08-18 22:52:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 366. [2020-08-18 22:52:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-18 22:52:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 457 transitions. [2020-08-18 22:52:50,145 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 457 transitions. Word has length 90 [2020-08-18 22:52:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:50,146 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 457 transitions. [2020-08-18 22:52:50,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 457 transitions. [2020-08-18 22:52:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:50,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:50,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:50,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:52:50,148 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:50,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:50,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1504622653, now seen corresponding path program 1 times [2020-08-18 22:52:50,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:50,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447529163] [2020-08-18 22:52:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:50,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447529163] [2020-08-18 22:52:50,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:50,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:50,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352177680] [2020-08-18 22:52:50,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:50,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:50,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:50,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:50,424 INFO L87 Difference]: Start difference. First operand 366 states and 457 transitions. Second operand 10 states. [2020-08-18 22:52:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:52,012 INFO L93 Difference]: Finished difference Result 877 states and 1164 transitions. [2020-08-18 22:52:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:52:52,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:52,017 INFO L225 Difference]: With dead ends: 877 [2020-08-18 22:52:52,017 INFO L226 Difference]: Without dead ends: 532 [2020-08-18 22:52:52,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:52:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-18 22:52:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-08-18 22:52:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-08-18 22:52:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 465 transitions. [2020-08-18 22:52:52,058 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 465 transitions. Word has length 90 [2020-08-18 22:52:52,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:52,058 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 465 transitions. [2020-08-18 22:52:52,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:52,058 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 465 transitions. [2020-08-18 22:52:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:52,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:52,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:52,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:52:52,060 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash -523963457, now seen corresponding path program 1 times [2020-08-18 22:52:52,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:52,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171915635] [2020-08-18 22:52:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:52,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171915635] [2020-08-18 22:52:52,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:52,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:52,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368143245] [2020-08-18 22:52:52,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:52,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:52,275 INFO L87 Difference]: Start difference. First operand 376 states and 465 transitions. Second operand 10 states. [2020-08-18 22:52:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:54,056 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2020-08-18 22:52:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:52:54,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:54,060 INFO L225 Difference]: With dead ends: 915 [2020-08-18 22:52:54,060 INFO L226 Difference]: Without dead ends: 560 [2020-08-18 22:52:54,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:52:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-18 22:52:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 396. [2020-08-18 22:52:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-18 22:52:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 485 transitions. [2020-08-18 22:52:54,105 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 485 transitions. Word has length 90 [2020-08-18 22:52:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:54,106 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 485 transitions. [2020-08-18 22:52:54,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 485 transitions. [2020-08-18 22:52:54,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:54,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:54,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:54,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:52:54,108 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:54,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash -275816963, now seen corresponding path program 1 times [2020-08-18 22:52:54,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:54,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952324041] [2020-08-18 22:52:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:54,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952324041] [2020-08-18 22:52:54,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:54,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:54,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413904878] [2020-08-18 22:52:54,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:54,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:54,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:54,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:54,303 INFO L87 Difference]: Start difference. First operand 396 states and 485 transitions. Second operand 10 states. [2020-08-18 22:52:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:55,933 INFO L93 Difference]: Finished difference Result 939 states and 1222 transitions. [2020-08-18 22:52:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:52:55,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:55,938 INFO L225 Difference]: With dead ends: 939 [2020-08-18 22:52:55,938 INFO L226 Difference]: Without dead ends: 564 [2020-08-18 22:52:55,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:52:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-18 22:52:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 406. [2020-08-18 22:52:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-08-18 22:52:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 493 transitions. [2020-08-18 22:52:55,976 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 493 transitions. Word has length 90 [2020-08-18 22:52:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:55,977 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 493 transitions. [2020-08-18 22:52:55,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 493 transitions. [2020-08-18 22:52:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:55,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:55,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:55,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:52:55,979 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash -348203521, now seen corresponding path program 1 times [2020-08-18 22:52:55,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:55,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525434698] [2020-08-18 22:52:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:56,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525434698] [2020-08-18 22:52:56,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:56,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:52:56,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084575668] [2020-08-18 22:52:56,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:52:56,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:56,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:52:56,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:52:56,179 INFO L87 Difference]: Start difference. First operand 406 states and 493 transitions. Second operand 10 states. [2020-08-18 22:52:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:57,927 INFO L93 Difference]: Finished difference Result 1144 states and 1493 transitions. [2020-08-18 22:52:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 22:52:57,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 22:52:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:57,933 INFO L225 Difference]: With dead ends: 1144 [2020-08-18 22:52:57,934 INFO L226 Difference]: Without dead ends: 758 [2020-08-18 22:52:57,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-08-18 22:52:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-18 22:52:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 467. [2020-08-18 22:52:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-08-18 22:52:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 547 transitions. [2020-08-18 22:52:57,982 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 547 transitions. Word has length 90 [2020-08-18 22:52:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:57,982 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 547 transitions. [2020-08-18 22:52:57,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:52:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 547 transitions. [2020-08-18 22:52:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:52:57,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:57,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:57,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:52:57,986 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:57,987 INFO L82 PathProgramCache]: Analyzing trace with hash -286163907, now seen corresponding path program 1 times [2020-08-18 22:52:57,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:57,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206027771] [2020-08-18 22:52:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:58,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206027771] [2020-08-18 22:52:58,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:58,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:52:58,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429635092] [2020-08-18 22:52:58,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:52:58,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:52:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:52:58,114 INFO L87 Difference]: Start difference. First operand 467 states and 547 transitions. Second operand 7 states. [2020-08-18 22:52:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:52:59,665 INFO L93 Difference]: Finished difference Result 1503 states and 1877 transitions. [2020-08-18 22:52:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:52:59,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-18 22:52:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:52:59,673 INFO L225 Difference]: With dead ends: 1503 [2020-08-18 22:52:59,673 INFO L226 Difference]: Without dead ends: 1058 [2020-08-18 22:52:59,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:52:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-08-18 22:52:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 847. [2020-08-18 22:52:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-18 22:52:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1018 transitions. [2020-08-18 22:52:59,754 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1018 transitions. Word has length 90 [2020-08-18 22:52:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:52:59,755 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1018 transitions. [2020-08-18 22:52:59,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:52:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1018 transitions. [2020-08-18 22:52:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 22:52:59,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:59,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:52:59,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:52:59,757 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:59,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1417763379, now seen corresponding path program 1 times [2020-08-18 22:52:59,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:59,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584270481] [2020-08-18 22:52:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:52:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:52:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:52:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:52:59,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584270481] [2020-08-18 22:52:59,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:59,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:52:59,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282076191] [2020-08-18 22:52:59,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:52:59,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:59,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:52:59,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:52:59,898 INFO L87 Difference]: Start difference. First operand 847 states and 1018 transitions. Second operand 7 states. [2020-08-18 22:53:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:01,496 INFO L93 Difference]: Finished difference Result 2813 states and 3701 transitions. [2020-08-18 22:53:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:53:01,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-08-18 22:53:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:01,509 INFO L225 Difference]: With dead ends: 2813 [2020-08-18 22:53:01,510 INFO L226 Difference]: Without dead ends: 1993 [2020-08-18 22:53:01,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:53:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-18 22:53:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1710. [2020-08-18 22:53:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-08-18 22:53:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2141 transitions. [2020-08-18 22:53:01,691 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2141 transitions. Word has length 91 [2020-08-18 22:53:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:01,713 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2141 transitions. [2020-08-18 22:53:01,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:53:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2141 transitions. [2020-08-18 22:53:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 22:53:01,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:01,716 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:53:01,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:53:01,716 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1387972843, now seen corresponding path program 1 times [2020-08-18 22:53:01,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:01,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962950706] [2020-08-18 22:53:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:53:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:53:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:53:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:53:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:53:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 22:53:01,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962950706] [2020-08-18 22:53:01,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:01,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:53:01,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018330090] [2020-08-18 22:53:01,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:53:01,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:01,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:53:01,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:53:01,860 INFO L87 Difference]: Start difference. First operand 1710 states and 2141 transitions. Second operand 9 states. [2020-08-18 22:53:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:03,240 INFO L93 Difference]: Finished difference Result 3845 states and 5084 transitions. [2020-08-18 22:53:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:53:03,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-08-18 22:53:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:03,253 INFO L225 Difference]: With dead ends: 3845 [2020-08-18 22:53:03,253 INFO L226 Difference]: Without dead ends: 2157 [2020-08-18 22:53:03,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-18 22:53:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-18 22:53:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2020-08-18 22:53:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-08-18 22:53:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2232 transitions. [2020-08-18 22:53:03,475 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2232 transitions. Word has length 111 [2020-08-18 22:53:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:03,476 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2232 transitions. [2020-08-18 22:53:03,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:53:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2232 transitions. [2020-08-18 22:53:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 22:53:03,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:03,480 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:53:03,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 22:53:03,481 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:03,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:03,482 INFO L82 PathProgramCache]: Analyzing trace with hash 36587625, now seen corresponding path program 1 times [2020-08-18 22:53:03,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:03,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323020188] [2020-08-18 22:53:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:53:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:53:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:53:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:53:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:53:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 22:53:03,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323020188] [2020-08-18 22:53:03,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:03,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:53:03,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720222722] [2020-08-18 22:53:03,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:53:03,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:53:03,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:53:03,687 INFO L87 Difference]: Start difference. First operand 1767 states and 2232 transitions. Second operand 8 states. [2020-08-18 22:53:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:06,285 INFO L93 Difference]: Finished difference Result 5835 states and 7942 transitions. [2020-08-18 22:53:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:53:06,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-08-18 22:53:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:06,307 INFO L225 Difference]: With dead ends: 5835 [2020-08-18 22:53:06,307 INFO L226 Difference]: Without dead ends: 3120 [2020-08-18 22:53:06,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:53:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-08-18 22:53:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2788. [2020-08-18 22:53:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-08-18 22:53:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3646 transitions. [2020-08-18 22:53:06,815 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3646 transitions. Word has length 111 [2020-08-18 22:53:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:06,816 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3646 transitions. [2020-08-18 22:53:06,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:53:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3646 transitions. [2020-08-18 22:53:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 22:53:06,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:06,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 22:53:06,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 22:53:06,825 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:06,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1178118941, now seen corresponding path program 1 times [2020-08-18 22:53:06,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:06,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484805186] [2020-08-18 22:53:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:53:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:53:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:53:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:53:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:53:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:53:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 22:53:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:07,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:07,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-18 22:53:07,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484805186] [2020-08-18 22:53:07,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:07,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:53:07,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671777053] [2020-08-18 22:53:07,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:53:07,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:07,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:53:07,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:53:07,049 INFO L87 Difference]: Start difference. First operand 2788 states and 3646 transitions. Second operand 9 states. [2020-08-18 22:53:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:09,735 INFO L93 Difference]: Finished difference Result 8089 states and 11637 transitions. [2020-08-18 22:53:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:53:09,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-08-18 22:53:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:09,780 INFO L225 Difference]: With dead ends: 8089 [2020-08-18 22:53:09,781 INFO L226 Difference]: Without dead ends: 5323 [2020-08-18 22:53:09,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-08-18 22:53:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-08-18 22:53:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 4852. [2020-08-18 22:53:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-08-18 22:53:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6633 transitions. [2020-08-18 22:53:10,695 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6633 transitions. Word has length 155 [2020-08-18 22:53:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:10,696 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 6633 transitions. [2020-08-18 22:53:10,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:53:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6633 transitions. [2020-08-18 22:53:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 22:53:10,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:10,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 22:53:10,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 22:53:10,706 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash -390866386, now seen corresponding path program 1 times [2020-08-18 22:53:10,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:10,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658488110] [2020-08-18 22:53:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:53:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:53:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:53:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 22:53:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 22:53:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:53:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 22:53:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:11,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:11,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-18 22:53:11,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658488110] [2020-08-18 22:53:11,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:11,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:53:11,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926343471] [2020-08-18 22:53:11,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:53:11,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:53:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:53:11,081 INFO L87 Difference]: Start difference. First operand 4852 states and 6633 transitions. Second operand 10 states. [2020-08-18 22:53:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:14,638 INFO L93 Difference]: Finished difference Result 12975 states and 19533 transitions. [2020-08-18 22:53:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 22:53:14,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-18 22:53:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:14,683 INFO L225 Difference]: With dead ends: 12975 [2020-08-18 22:53:14,683 INFO L226 Difference]: Without dead ends: 6726 [2020-08-18 22:53:14,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-08-18 22:53:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-08-18 22:53:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6174. [2020-08-18 22:53:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-08-18 22:53:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8297 transitions. [2020-08-18 22:53:15,516 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8297 transitions. Word has length 156 [2020-08-18 22:53:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:15,517 INFO L479 AbstractCegarLoop]: Abstraction has 6174 states and 8297 transitions. [2020-08-18 22:53:15,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:53:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8297 transitions. [2020-08-18 22:53:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-18 22:53:15,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:15,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-08-18 22:53:15,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 22:53:15,527 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:15,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1382123670, now seen corresponding path program 1 times [2020-08-18 22:53:15,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:15,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708196583] [2020-08-18 22:53:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 22:53:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:53:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:53:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 22:53:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:53:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:53:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 22:53:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 22:53:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 22:53:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 22:53:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 22:53:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-18 22:53:15,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708196583] [2020-08-18 22:53:15,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:15,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:53:15,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025945716] [2020-08-18 22:53:15,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:53:15,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:15,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:53:15,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:53:15,883 INFO L87 Difference]: Start difference. First operand 6174 states and 8297 transitions. Second operand 11 states. [2020-08-18 22:53:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:18,625 INFO L93 Difference]: Finished difference Result 12270 states and 16979 transitions. [2020-08-18 22:53:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 22:53:18,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-08-18 22:53:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:18,642 INFO L225 Difference]: With dead ends: 12270 [2020-08-18 22:53:18,642 INFO L226 Difference]: Without dead ends: 3143 [2020-08-18 22:53:18,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-08-18 22:53:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-08-18 22:53:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2950. [2020-08-18 22:53:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2950 states. [2020-08-18 22:53:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3443 transitions. [2020-08-18 22:53:18,925 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3443 transitions. Word has length 207 [2020-08-18 22:53:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:18,926 INFO L479 AbstractCegarLoop]: Abstraction has 2950 states and 3443 transitions. [2020-08-18 22:53:18,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:53:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3443 transitions. [2020-08-18 22:53:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-18 22:53:18,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:18,931 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-08-18 22:53:18,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 22:53:18,932 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash 89354437, now seen corresponding path program 1 times [2020-08-18 22:53:18,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:18,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206113553] [2020-08-18 22:53:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:53:18,962 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:53:18,963 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:53:18,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 22:53:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:53:19 BoogieIcfgContainer [2020-08-18 22:53:19,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:53:19,015 INFO L168 Benchmark]: Toolchain (without parser) took 40044.31 ms. Allocated memory was 149.9 MB in the beginning and 703.6 MB in the end (delta: 553.6 MB). Free memory was 105.1 MB in the beginning and 268.7 MB in the end (delta: -163.6 MB). Peak memory consumption was 390.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:53:19,019 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 149.9 MB. Free memory was 124.4 MB in the beginning and 124.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:53:19,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.79 ms. Allocated memory was 149.9 MB in the beginning and 206.6 MB in the end (delta: 56.6 MB). Free memory was 104.9 MB in the beginning and 181.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:53:19,023 INFO L168 Benchmark]: Boogie Preprocessor took 50.43 ms. Allocated memory is still 206.6 MB. Free memory was 181.8 MB in the beginning and 179.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:53:19,024 INFO L168 Benchmark]: RCFGBuilder took 660.85 ms. Allocated memory is still 206.6 MB. Free memory was 179.9 MB in the beginning and 144.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:53:19,025 INFO L168 Benchmark]: TraceAbstraction took 38861.00 ms. Allocated memory was 206.6 MB in the beginning and 703.6 MB in the end (delta: 497.0 MB). Free memory was 143.6 MB in the beginning and 268.7 MB in the end (delta: -125.1 MB). Peak memory consumption was 372.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:53:19,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 149.9 MB. Free memory was 124.4 MB in the beginning and 124.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 466.79 ms. Allocated memory was 149.9 MB in the beginning and 206.6 MB in the end (delta: 56.6 MB). Free memory was 104.9 MB in the beginning and 181.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.43 ms. Allocated memory is still 206.6 MB. Free memory was 181.8 MB in the beginning and 179.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 660.85 ms. Allocated memory is still 206.6 MB. Free memory was 179.9 MB in the beginning and 144.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38861.00 ms. Allocated memory was 206.6 MB in the beginning and 703.6 MB in the end (delta: 497.0 MB). Free memory was 143.6 MB in the beginning and 268.7 MB in the end (delta: -125.1 MB). Peak memory consumption was 372.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.7s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 31.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2606 SDtfs, 11528 SDslu, 735 SDs, 0 SdLazy, 15849 SolverSat, 5834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 3916 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1939 NumberOfCodeBlocks, 1939 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1715 ConstructedInterpolants, 0 QuantifiedInterpolants, 487945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 237/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...