/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:06:15,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:06:15,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:06:15,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:06:15,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:06:15,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:06:15,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:06:15,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:06:15,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:06:15,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:06:15,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:06:15,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:06:15,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:06:15,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:06:15,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:06:15,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:06:15,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:06:15,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:06:15,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:06:15,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:06:15,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:06:15,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:06:15,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:06:15,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:06:15,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:06:15,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:06:15,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:06:15,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:06:15,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:06:15,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:06:15,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:06:15,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:06:15,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:06:15,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:06:15,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:06:15,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:06:15,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:06:15,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:06:15,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:06:15,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:06:15,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:06:15,508 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 [2020-08-21 19:06:15,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:06:15,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:06:15,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:06:15,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:06:15,546 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:06:15,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:06:15,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:06:15,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:06:15,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:06:15,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:06:15,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:06:15,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:06:15,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:06:15,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:06:15,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:06:15,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:06:15,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:06:15,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:06:15,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:06:15,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:06:15,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:06:15,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:06:15,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:06:15,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:06:15,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:06:15,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:06:15,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:06:15,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:06:15,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:06:15,552 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:06:15,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:06:15,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:06:15,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:06:15,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:06:15,870 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:06:15,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-08-21 19:06:15,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3135aebc/275431a3b26a4ddb80bb68cfdc9149d3/FLAGd34cf11c7 [2020-08-21 19:06:16,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:06:16,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-08-21 19:06:16,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3135aebc/275431a3b26a4ddb80bb68cfdc9149d3/FLAGd34cf11c7 [2020-08-21 19:06:16,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3135aebc/275431a3b26a4ddb80bb68cfdc9149d3 [2020-08-21 19:06:16,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:06:16,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:06:16,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:06:16,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:06:16,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:06:16,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457b3941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16, skipping insertion in model container [2020-08-21 19:06:16,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:06:16,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:06:17,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:06:17,160 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:06:17,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:06:17,397 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:06:17,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17 WrapperNode [2020-08-21 19:06:17,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:06:17,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:06:17,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:06:17,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:06:17,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (1/1) ... [2020-08-21 19:06:17,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:06:17,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:06:17,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:06:17,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:06:17,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (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 [2020-08-21 19:06:17,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:06:17,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 19:06:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-21 19:06:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 19:06:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 19:06:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 19:06:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 19:06:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 19:06:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 19:06:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 19:06:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 19:06:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 19:06:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 19:06:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 19:06:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 19:06:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 19:06:17,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:06:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:06:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 19:06:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 19:06:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 19:06:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-21 19:06:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 19:06:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:06:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 19:06:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 19:06:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 19:06:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:06:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:06:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:06:18,198 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:06:18,198 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:06:18,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:06:18 BoogieIcfgContainer [2020-08-21 19:06:18,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:06:18,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:06:18,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:06:18,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:06:18,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:06:16" (1/3) ... [2020-08-21 19:06:18,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505f2d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:06:18, skipping insertion in model container [2020-08-21 19:06:18,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:17" (2/3) ... [2020-08-21 19:06:18,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505f2d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:06:18, skipping insertion in model container [2020-08-21 19:06:18,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:06:18" (3/3) ... [2020-08-21 19:06:18,214 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2020-08-21 19:06:18,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:06:18,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:06:18,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:06:18,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:06:18,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:06:18,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:06:18,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:06:18,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:06:18,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:06:18,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:06:18,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:06:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-21 19:06:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:18,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:18,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:18,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:18,321 INFO L82 PathProgramCache]: Analyzing trace with hash -67309704, now seen corresponding path program 1 times [2020-08-21 19:06:18,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:18,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948344830] [2020-08-21 19:06:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:19,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948344830] [2020-08-21 19:06:19,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:19,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 19:06:19,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765809832] [2020-08-21 19:06:19,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 19:06:19,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:19,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 19:06:19,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:06:19,071 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 14 states. [2020-08-21 19:06:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:21,947 INFO L93 Difference]: Finished difference Result 449 states and 710 transitions. [2020-08-21 19:06:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:06:21,949 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-08-21 19:06:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:21,968 INFO L225 Difference]: With dead ends: 449 [2020-08-21 19:06:21,968 INFO L226 Difference]: Without dead ends: 276 [2020-08-21 19:06:21,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-08-21 19:06:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-08-21 19:06:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 177. [2020-08-21 19:06:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-21 19:06:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 237 transitions. [2020-08-21 19:06:22,058 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 237 transitions. Word has length 92 [2020-08-21 19:06:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:22,059 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 237 transitions. [2020-08-21 19:06:22,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 19:06:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 237 transitions. [2020-08-21 19:06:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:22,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:22,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:22,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:06:22,065 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:22,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2098275908, now seen corresponding path program 1 times [2020-08-21 19:06:22,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:22,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823631008] [2020-08-21 19:06:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:22,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823631008] [2020-08-21 19:06:22,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:22,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:22,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055633151] [2020-08-21 19:06:22,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:22,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:22,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:22,291 INFO L87 Difference]: Start difference. First operand 177 states and 237 transitions. Second operand 10 states. [2020-08-21 19:06:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:23,831 INFO L93 Difference]: Finished difference Result 425 states and 610 transitions. [2020-08-21 19:06:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:06:23,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 19:06:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:23,842 INFO L225 Difference]: With dead ends: 425 [2020-08-21 19:06:23,842 INFO L226 Difference]: Without dead ends: 268 [2020-08-21 19:06:23,844 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 [2020-08-21 19:06:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-21 19:06:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 177. [2020-08-21 19:06:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-21 19:06:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 234 transitions. [2020-08-21 19:06:23,910 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 234 transitions. Word has length 92 [2020-08-21 19:06:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:23,912 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 234 transitions. [2020-08-21 19:06:23,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:23,912 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 234 transitions. [2020-08-21 19:06:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:23,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:23,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:23,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:06:23,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1653808840, now seen corresponding path program 1 times [2020-08-21 19:06:23,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:23,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537862746] [2020-08-21 19:06:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:24,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537862746] [2020-08-21 19:06:24,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:24,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:24,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828634951] [2020-08-21 19:06:24,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:24,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:24,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:24,159 INFO L87 Difference]: Start difference. First operand 177 states and 234 transitions. Second operand 10 states. [2020-08-21 19:06:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:26,069 INFO L93 Difference]: Finished difference Result 504 states and 747 transitions. [2020-08-21 19:06:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:06:26,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 19:06:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:26,075 INFO L225 Difference]: With dead ends: 504 [2020-08-21 19:06:26,075 INFO L226 Difference]: Without dead ends: 347 [2020-08-21 19:06:26,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-21 19:06:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-08-21 19:06:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 213. [2020-08-21 19:06:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 19:06:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2020-08-21 19:06:26,111 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 92 [2020-08-21 19:06:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:26,112 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2020-08-21 19:06:26,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:26,112 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2020-08-21 19:06:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:26,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:26,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:26,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:06:26,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash -550041895, now seen corresponding path program 1 times [2020-08-21 19:06:26,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:26,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355109353] [2020-08-21 19:06:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:26,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355109353] [2020-08-21 19:06:26,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:26,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:26,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688663597] [2020-08-21 19:06:26,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:26,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:26,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:26,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:26,303 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand 10 states. [2020-08-21 19:06:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:28,263 INFO L93 Difference]: Finished difference Result 586 states and 840 transitions. [2020-08-21 19:06:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:06:28,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 19:06:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:28,271 INFO L225 Difference]: With dead ends: 586 [2020-08-21 19:06:28,271 INFO L226 Difference]: Without dead ends: 393 [2020-08-21 19:06:28,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-21 19:06:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-08-21 19:06:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 249. [2020-08-21 19:06:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-08-21 19:06:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 312 transitions. [2020-08-21 19:06:28,339 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 312 transitions. Word has length 92 [2020-08-21 19:06:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:28,340 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 312 transitions. [2020-08-21 19:06:28,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 312 transitions. [2020-08-21 19:06:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:28,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:28,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:28,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:06:28,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:28,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1219969707, now seen corresponding path program 1 times [2020-08-21 19:06:28,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:28,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048597971] [2020-08-21 19:06:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:28,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048597971] [2020-08-21 19:06:28,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:28,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:28,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159841432] [2020-08-21 19:06:28,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:28,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:28,536 INFO L87 Difference]: Start difference. First operand 249 states and 312 transitions. Second operand 10 states. [2020-08-21 19:06:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:30,409 INFO L93 Difference]: Finished difference Result 663 states and 922 transitions. [2020-08-21 19:06:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:06:30,414 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 19:06:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:30,417 INFO L225 Difference]: With dead ends: 663 [2020-08-21 19:06:30,418 INFO L226 Difference]: Without dead ends: 434 [2020-08-21 19:06:30,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-21 19:06:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-21 19:06:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 282. [2020-08-21 19:06:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-08-21 19:06:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 345 transitions. [2020-08-21 19:06:30,452 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 345 transitions. Word has length 92 [2020-08-21 19:06:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:30,452 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 345 transitions. [2020-08-21 19:06:30,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 345 transitions. [2020-08-21 19:06:30,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:30,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:30,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:30,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:06:30,454 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:30,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1929357560, now seen corresponding path program 1 times [2020-08-21 19:06:30,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:30,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563152875] [2020-08-21 19:06:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:30,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563152875] [2020-08-21 19:06:30,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:30,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:30,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793422787] [2020-08-21 19:06:30,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:30,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:30,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:30,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:30,676 INFO L87 Difference]: Start difference. First operand 282 states and 345 transitions. Second operand 10 states. [2020-08-21 19:06:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:32,475 INFO L93 Difference]: Finished difference Result 674 states and 877 transitions. [2020-08-21 19:06:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:06:32,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 19:06:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:32,479 INFO L225 Difference]: With dead ends: 674 [2020-08-21 19:06:32,479 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 19:06:32,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:06:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 19:06:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 287. [2020-08-21 19:06:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-21 19:06:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 347 transitions. [2020-08-21 19:06:32,511 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 347 transitions. Word has length 92 [2020-08-21 19:06:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:32,512 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 347 transitions. [2020-08-21 19:06:32,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 347 transitions. [2020-08-21 19:06:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:32,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:32,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:32,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:06:32,515 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:32,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1031964282, now seen corresponding path program 1 times [2020-08-21 19:06:32,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:32,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963018043] [2020-08-21 19:06:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:32,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963018043] [2020-08-21 19:06:32,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:32,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:32,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484692472] [2020-08-21 19:06:32,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:32,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:32,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:32,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:32,711 INFO L87 Difference]: Start difference. First operand 287 states and 347 transitions. Second operand 10 states. [2020-08-21 19:06:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:35,097 INFO L93 Difference]: Finished difference Result 1068 states and 1350 transitions. [2020-08-21 19:06:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 19:06:35,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 19:06:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:35,105 INFO L225 Difference]: With dead ends: 1068 [2020-08-21 19:06:35,106 INFO L226 Difference]: Without dead ends: 801 [2020-08-21 19:06:35,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-08-21 19:06:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-08-21 19:06:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 591. [2020-08-21 19:06:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-21 19:06:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 707 transitions. [2020-08-21 19:06:35,216 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 707 transitions. Word has length 92 [2020-08-21 19:06:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:35,218 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 707 transitions. [2020-08-21 19:06:35,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 707 transitions. [2020-08-21 19:06:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:06:35,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:35,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:35,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:06:35,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:35,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1054596536, now seen corresponding path program 1 times [2020-08-21 19:06:35,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:35,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761141746] [2020-08-21 19:06:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:35,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761141746] [2020-08-21 19:06:35,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:35,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:06:35,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828437635] [2020-08-21 19:06:35,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:06:35,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:35,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:06:35,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:06:35,434 INFO L87 Difference]: Start difference. First operand 591 states and 707 transitions. Second operand 7 states. [2020-08-21 19:06:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:37,211 INFO L93 Difference]: Finished difference Result 2051 states and 2640 transitions. [2020-08-21 19:06:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:06:37,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-21 19:06:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:37,230 INFO L225 Difference]: With dead ends: 2051 [2020-08-21 19:06:37,230 INFO L226 Difference]: Without dead ends: 1481 [2020-08-21 19:06:37,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:06:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-08-21 19:06:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1207. [2020-08-21 19:06:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-08-21 19:06:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1495 transitions. [2020-08-21 19:06:37,373 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1495 transitions. Word has length 92 [2020-08-21 19:06:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:37,374 INFO L479 AbstractCegarLoop]: Abstraction has 1207 states and 1495 transitions. [2020-08-21 19:06:37,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:06:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1495 transitions. [2020-08-21 19:06:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 19:06:37,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:37,380 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, 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] [2020-08-21 19:06:37,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:06:37,380 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1357284192, now seen corresponding path program 1 times [2020-08-21 19:06:37,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:37,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177960628] [2020-08-21 19:06:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 19:06:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:06:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 19:06:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 19:06:37,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177960628] [2020-08-21 19:06:37,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:37,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:06:37,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069011912] [2020-08-21 19:06:37,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:06:37,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:06:37,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:06:37,638 INFO L87 Difference]: Start difference. First operand 1207 states and 1495 transitions. Second operand 9 states. [2020-08-21 19:06:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:40,290 INFO L93 Difference]: Finished difference Result 3860 states and 4987 transitions. [2020-08-21 19:06:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 19:06:40,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-08-21 19:06:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:40,309 INFO L225 Difference]: With dead ends: 3860 [2020-08-21 19:06:40,310 INFO L226 Difference]: Without dead ends: 2675 [2020-08-21 19:06:40,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-21 19:06:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-08-21 19:06:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2303. [2020-08-21 19:06:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-08-21 19:06:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2940 transitions. [2020-08-21 19:06:40,552 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2940 transitions. Word has length 147 [2020-08-21 19:06:40,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:40,554 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2940 transitions. [2020-08-21 19:06:40,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:06:40,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2940 transitions. [2020-08-21 19:06:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-08-21 19:06:40,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:40,562 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, 3, 3, 3, 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] [2020-08-21 19:06:40,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:06:40,563 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 674078602, now seen corresponding path program 1 times [2020-08-21 19:06:40,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:40,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333791353] [2020-08-21 19:06:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 19:06:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:06:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 19:06:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-21 19:06:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-08-21 19:06:40,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333791353] [2020-08-21 19:06:40,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:40,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:40,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378683848] [2020-08-21 19:06:40,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:40,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:40,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:40,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:40,905 INFO L87 Difference]: Start difference. First operand 2303 states and 2940 transitions. Second operand 10 states. [2020-08-21 19:06:43,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:43,528 INFO L93 Difference]: Finished difference Result 6901 states and 9607 transitions. [2020-08-21 19:06:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:06:43,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2020-08-21 19:06:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:43,559 INFO L225 Difference]: With dead ends: 6901 [2020-08-21 19:06:43,560 INFO L226 Difference]: Without dead ends: 4625 [2020-08-21 19:06:43,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-08-21 19:06:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2020-08-21 19:06:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 4205. [2020-08-21 19:06:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4205 states. [2020-08-21 19:06:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 5340 transitions. [2020-08-21 19:06:44,132 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 5340 transitions. Word has length 191 [2020-08-21 19:06:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:44,133 INFO L479 AbstractCegarLoop]: Abstraction has 4205 states and 5340 transitions. [2020-08-21 19:06:44,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 5340 transitions. [2020-08-21 19:06:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-08-21 19:06:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:44,143 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:44,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:06:44,143 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash -635516700, now seen corresponding path program 1 times [2020-08-21 19:06:44,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:44,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303035109] [2020-08-21 19:06:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:06:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 19:06:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 19:06:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:06:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-21 19:06:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 19:06:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 19:06:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-08-21 19:06:44,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303035109] [2020-08-21 19:06:44,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:44,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:44,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46306382] [2020-08-21 19:06:44,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:44,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:44,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:44,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:44,613 INFO L87 Difference]: Start difference. First operand 4205 states and 5340 transitions. Second operand 10 states. [2020-08-21 19:06:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:46,197 INFO L93 Difference]: Finished difference Result 8766 states and 11212 transitions. [2020-08-21 19:06:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:06:46,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 249 [2020-08-21 19:06:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:46,223 INFO L225 Difference]: With dead ends: 8766 [2020-08-21 19:06:46,224 INFO L226 Difference]: Without dead ends: 4582 [2020-08-21 19:06:46,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-08-21 19:06:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2020-08-21 19:06:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 4198. [2020-08-21 19:06:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4198 states. [2020-08-21 19:06:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 5326 transitions. [2020-08-21 19:06:46,764 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 5326 transitions. Word has length 249 [2020-08-21 19:06:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:46,765 INFO L479 AbstractCegarLoop]: Abstraction has 4198 states and 5326 transitions. [2020-08-21 19:06:46,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 5326 transitions. [2020-08-21 19:06:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 19:06:46,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:46,772 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, 3, 3, 3, 3, 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] [2020-08-21 19:06:46,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:06:46,772 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:46,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:46,773 INFO L82 PathProgramCache]: Analyzing trace with hash -2111585836, now seen corresponding path program 1 times [2020-08-21 19:06:46,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:46,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676568155] [2020-08-21 19:06:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 19:06:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:06:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 19:06:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 19:06:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 19:06:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-21 19:06:47,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676568155] [2020-08-21 19:06:47,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:47,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:06:47,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070686865] [2020-08-21 19:06:47,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:06:47,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:47,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:06:47,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:06:47,140 INFO L87 Difference]: Start difference. First operand 4198 states and 5326 transitions. Second operand 13 states. [2020-08-21 19:06:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:50,853 INFO L93 Difference]: Finished difference Result 11304 states and 15162 transitions. [2020-08-21 19:06:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 19:06:50,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-21 19:06:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:50,893 INFO L225 Difference]: With dead ends: 11304 [2020-08-21 19:06:50,894 INFO L226 Difference]: Without dead ends: 5377 [2020-08-21 19:06:50,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2020-08-21 19:06:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2020-08-21 19:06:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 4715. [2020-08-21 19:06:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4715 states. [2020-08-21 19:06:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 5844 transitions. [2020-08-21 19:06:51,815 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 5844 transitions. Word has length 192 [2020-08-21 19:06:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:51,816 INFO L479 AbstractCegarLoop]: Abstraction has 4715 states and 5844 transitions. [2020-08-21 19:06:51,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:06:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 5844 transitions. [2020-08-21 19:06:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-21 19:06:51,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:51,831 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:51,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:06:51,831 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1676255660, now seen corresponding path program 1 times [2020-08-21 19:06:51,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:51,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483135141] [2020-08-21 19:06:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:51,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:06:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 19:06:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 19:06:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:06:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 19:06:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-21 19:06:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-08-21 19:06:52,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483135141] [2020-08-21 19:06:52,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:52,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 19:06:52,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22928069] [2020-08-21 19:06:52,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:06:52,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:06:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:06:52,238 INFO L87 Difference]: Start difference. First operand 4715 states and 5844 transitions. Second operand 9 states. [2020-08-21 19:06:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:55,091 INFO L93 Difference]: Finished difference Result 9794 states and 12543 transitions. [2020-08-21 19:06:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:06:55,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-08-21 19:06:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:55,132 INFO L225 Difference]: With dead ends: 9794 [2020-08-21 19:06:55,132 INFO L226 Difference]: Without dead ends: 5101 [2020-08-21 19:06:55,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:06:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2020-08-21 19:06:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 4723. [2020-08-21 19:06:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4723 states. [2020-08-21 19:06:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 5800 transitions. [2020-08-21 19:06:55,745 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 5800 transitions. Word has length 212 [2020-08-21 19:06:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:55,746 INFO L479 AbstractCegarLoop]: Abstraction has 4723 states and 5800 transitions. [2020-08-21 19:06:55,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:06:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 5800 transitions. [2020-08-21 19:06:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-08-21 19:06:55,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:55,755 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:55,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 19:06:55,756 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:55,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1042203604, now seen corresponding path program 1 times [2020-08-21 19:06:55,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:55,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877094938] [2020-08-21 19:06:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:06:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:06:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:06:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 19:06:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:06:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 19:06:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 19:06:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 19:06:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 19:06:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:06:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-21 19:06:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-08-21 19:06:56,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877094938] [2020-08-21 19:06:56,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:56,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:06:56,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794962402] [2020-08-21 19:06:56,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:06:56,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:06:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:06:56,183 INFO L87 Difference]: Start difference. First operand 4723 states and 5800 transitions. Second operand 13 states. [2020-08-21 19:07:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:00,194 INFO L93 Difference]: Finished difference Result 14278 states and 19378 transitions. [2020-08-21 19:07:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 19:07:00,195 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-08-21 19:07:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:00,236 INFO L225 Difference]: With dead ends: 14278 [2020-08-21 19:07:00,237 INFO L226 Difference]: Without dead ends: 9577 [2020-08-21 19:07:00,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 19:07:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2020-08-21 19:07:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 8707. [2020-08-21 19:07:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8707 states. [2020-08-21 19:07:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8707 states to 8707 states and 10918 transitions. [2020-08-21 19:07:00,939 INFO L78 Accepts]: Start accepts. Automaton has 8707 states and 10918 transitions. Word has length 219 [2020-08-21 19:07:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:00,940 INFO L479 AbstractCegarLoop]: Abstraction has 8707 states and 10918 transitions. [2020-08-21 19:07:00,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:07:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8707 states and 10918 transitions. [2020-08-21 19:07:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-08-21 19:07:00,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:00,952 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:07:00,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 19:07:00,953 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:00,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908987, now seen corresponding path program 1 times [2020-08-21 19:07:00,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:00,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126877459] [2020-08-21 19:07:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:07:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:07:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:07:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:07:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:07:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:07:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:07:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:07:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:07:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:07:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 19:07:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:07:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:07:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:07:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:07:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 19:07:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 19:07:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 19:07:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:07:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:07:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:07:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:07:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 19:07:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-08-21 19:07:01,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126877459] [2020-08-21 19:07:01,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:01,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:07:01,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442871350] [2020-08-21 19:07:01,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:07:01,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:01,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:07:01,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:07:01,704 INFO L87 Difference]: Start difference. First operand 8707 states and 10918 transitions. Second operand 10 states. [2020-08-21 19:07:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:03,546 INFO L93 Difference]: Finished difference Result 11291 states and 14244 transitions. [2020-08-21 19:07:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:07:03,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-08-21 19:07:03,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:03,583 INFO L225 Difference]: With dead ends: 11291 [2020-08-21 19:07:03,583 INFO L226 Difference]: Without dead ends: 9299 [2020-08-21 19:07:03,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-08-21 19:07:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2020-08-21 19:07:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 8701. [2020-08-21 19:07:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8701 states. [2020-08-21 19:07:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8701 states to 8701 states and 10907 transitions. [2020-08-21 19:07:04,293 INFO L78 Accepts]: Start accepts. Automaton has 8701 states and 10907 transitions. Word has length 213 [2020-08-21 19:07:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:04,293 INFO L479 AbstractCegarLoop]: Abstraction has 8701 states and 10907 transitions. [2020-08-21 19:07:04,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:07:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8701 states and 10907 transitions. [2020-08-21 19:07:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-08-21 19:07:04,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:04,304 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:07:04,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 19:07:04,305 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:04,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash -953020717, now seen corresponding path program 1 times [2020-08-21 19:07:04,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:04,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510065752] [2020-08-21 19:07:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:07:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:07:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:07:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 19:07:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:07:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:07:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:07:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:07:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:07:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:07:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:07:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 19:07:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 19:07:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 19:07:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-21 19:07:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:07:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:07:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:07:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 19:07:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:07:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:07:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:07:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 19:07:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 19:07:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-21 19:07:04,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510065752] [2020-08-21 19:07:04,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:07:04,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:07:04,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953871516] [2020-08-21 19:07:04,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:07:04,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:04,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:07:04,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:07:04,717 INFO L87 Difference]: Start difference. First operand 8701 states and 10907 transitions. Second operand 13 states.