/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=DEEPEST --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.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:43:07,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:43:07,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:43:07,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:43:07,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:43:07,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:43:07,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:43:07,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:43:07,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:43:07,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:43:07,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:43:07,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:43:07,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:43:07,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:43:07,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:43:07,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:43:07,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:43:07,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:43:07,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:43:07,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:43:07,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:43:07,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:43:07,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:43:07,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:43:07,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:43:07,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:43:07,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:43:07,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:43:07,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:43:07,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:43:07,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:43:07,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:43:07,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:43:07,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:43:07,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:43:07,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:43:07,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:43:07,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:43:07,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:43:07,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:43:07,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:43:07,516 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 20:43:07,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:43:07,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:43:07,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:43:07,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:43:07,538 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:43:07,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:43:07,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:43:07,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:43:07,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:43:07,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:43:07,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:43:07,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:43:07,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:43:07,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:43:07,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:43:07,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:43:07,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:43:07,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:43:07,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:43:07,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:43:07,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:43:07,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:43:07,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:43:07,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:43:07,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:43:07,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:43:07,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:43:07,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:43:07,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:43:07,543 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:43:07,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:43:07,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:43:07,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:43:07,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:43:07,894 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:43:07,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-21 20:43:07,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6345abee5/22e6b5c781f7472a8512cab4675a84fe/FLAG9867150a8 [2020-08-21 20:43:08,415 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:43:08,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-21 20:43:08,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6345abee5/22e6b5c781f7472a8512cab4675a84fe/FLAG9867150a8 [2020-08-21 20:43:08,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6345abee5/22e6b5c781f7472a8512cab4675a84fe [2020-08-21 20:43:08,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:43:08,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:43:08,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:43:08,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:43:08,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:43:08,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:43:08" (1/1) ... [2020-08-21 20:43:08,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:08, skipping insertion in model container [2020-08-21 20:43:08,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:43:08" (1/1) ... [2020-08-21 20:43:08,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:43:08,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:43:09,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:43:09,050 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:43:09,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:43:09,191 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:43:09,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09 WrapperNode [2020-08-21 20:43:09,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:43:09,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:43:09,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:43:09,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:43:09,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (1/1) ... [2020-08-21 20:43:09,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:43:09,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:43:09,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:43:09,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:43:09,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (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 20:43:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:43:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:43:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 20:43:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 20:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 20:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 20:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 20:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 20:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 20:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 20:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 20:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 20:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 20:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 20:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:43:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 20:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 20:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 20:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 20:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 20:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 20:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 20:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 20:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:43:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:43:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:43:09,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:43:09,792 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 20:43:09,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:43:09 BoogieIcfgContainer [2020-08-21 20:43:09,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:43:09,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:43:09,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:43:09,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:43:09,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:43:08" (1/3) ... [2020-08-21 20:43:09,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7828e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:43:09, skipping insertion in model container [2020-08-21 20:43:09,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:43:09" (2/3) ... [2020-08-21 20:43:09,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7828e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:43:09, skipping insertion in model container [2020-08-21 20:43:09,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:43:09" (3/3) ... [2020-08-21 20:43:09,807 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-21 20:43:09,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:43:09,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:43:09,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:43:09,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:43:09,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:43:09,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:43:09,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:43:09,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:43:09,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:43:09,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:43:09,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:43:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-21 20:43:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:09,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:09,896 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] [2020-08-21 20:43:09,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:09,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:09,903 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-21 20:43:09,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:09,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294446003] [2020-08-21 20:43:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:10,499 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 20:43:10,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294446003] [2020-08-21 20:43:10,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:10,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:43:10,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779926975] [2020-08-21 20:43:10,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:43:10,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:10,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:43:10,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:43:10,526 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-21 20:43:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:12,512 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-21 20:43:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:43:12,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-21 20:43:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:12,533 INFO L225 Difference]: With dead ends: 501 [2020-08-21 20:43:12,533 INFO L226 Difference]: Without dead ends: 357 [2020-08-21 20:43:12,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:43:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-21 20:43:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-21 20:43:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 20:43:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-21 20:43:12,633 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-21 20:43:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:12,633 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-21 20:43:12,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:43:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-21 20:43:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:12,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:12,641 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] [2020-08-21 20:43:12,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:43:12,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-21 20:43:12,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:12,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140852619] [2020-08-21 20:43:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:12,885 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 20:43:12,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140852619] [2020-08-21 20:43:12,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:12,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:43:12,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977368696] [2020-08-21 20:43:12,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:43:12,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:12,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:43:12,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:43:12,891 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-21 20:43:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:14,080 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-21 20:43:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 20:43:14,083 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 20:43:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:14,088 INFO L225 Difference]: With dead ends: 573 [2020-08-21 20:43:14,088 INFO L226 Difference]: Without dead ends: 348 [2020-08-21 20:43:14,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:43:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-21 20:43:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-21 20:43:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 20:43:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-21 20:43:14,136 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-21 20:43:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:14,137 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-21 20:43:14,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:43:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-21 20:43:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:14,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:14,140 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] [2020-08-21 20:43:14,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:43:14,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-21 20:43:14,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:14,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845366777] [2020-08-21 20:43:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:14,307 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 20:43:14,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845366777] [2020-08-21 20:43:14,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:14,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:43:14,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420062477] [2020-08-21 20:43:14,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:43:14,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:14,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:43:14,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:43:14,309 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-21 20:43:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:15,846 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-21 20:43:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:43:15,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 20:43:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:15,852 INFO L225 Difference]: With dead ends: 696 [2020-08-21 20:43:15,852 INFO L226 Difference]: Without dead ends: 471 [2020-08-21 20:43:15,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:43:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-21 20:43:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-21 20:43:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-21 20:43:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-21 20:43:15,917 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-21 20:43:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:15,917 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-21 20:43:15,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:43:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-21 20:43:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:15,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:15,921 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] [2020-08-21 20:43:15,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:43:15,921 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-21 20:43:15,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:15,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46289532] [2020-08-21 20:43:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:16,136 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 20:43:16,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46289532] [2020-08-21 20:43:16,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:16,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:43:16,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893030884] [2020-08-21 20:43:16,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:43:16,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:16,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:43:16,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:43:16,138 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-21 20:43:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:17,471 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-21 20:43:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:43:17,473 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 20:43:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:17,477 INFO L225 Difference]: With dead ends: 718 [2020-08-21 20:43:17,477 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 20:43:17,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:43:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 20:43:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-21 20:43:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-21 20:43:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-21 20:43:17,516 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-21 20:43:17,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:17,516 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-21 20:43:17,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:43:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-21 20:43:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:17,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:17,519 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] [2020-08-21 20:43:17,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:43:17,519 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:17,520 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-21 20:43:17,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:17,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175739647] [2020-08-21 20:43:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:17,684 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 20:43:17,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175739647] [2020-08-21 20:43:17,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:17,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:43:17,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069090944] [2020-08-21 20:43:17,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:43:17,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:43:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:43:17,687 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-21 20:43:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:18,947 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-21 20:43:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:43:18,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 20:43:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:18,952 INFO L225 Difference]: With dead ends: 748 [2020-08-21 20:43:18,952 INFO L226 Difference]: Without dead ends: 452 [2020-08-21 20:43:18,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:43:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-21 20:43:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-21 20:43:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-21 20:43:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-21 20:43:19,006 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-21 20:43:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:19,007 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-21 20:43:19,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:43:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-21 20:43:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:19,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:19,013 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] [2020-08-21 20:43:19,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:43:19,013 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:19,013 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-21 20:43:19,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:19,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610597157] [2020-08-21 20:43:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:19,159 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 20:43:19,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610597157] [2020-08-21 20:43:19,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:19,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:43:19,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899382439] [2020-08-21 20:43:19,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:43:19,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:19,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:43:19,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:43:19,162 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-21 20:43:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:20,530 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-21 20:43:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 20:43:20,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 20:43:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:20,541 INFO L225 Difference]: With dead ends: 894 [2020-08-21 20:43:20,542 INFO L226 Difference]: Without dead ends: 587 [2020-08-21 20:43:20,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-21 20:43:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-21 20:43:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-21 20:43:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-21 20:43:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-21 20:43:20,609 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-21 20:43:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:20,610 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-21 20:43:20,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:43:20,610 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-21 20:43:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:43:20,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:20,612 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] [2020-08-21 20:43:20,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:43:20,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-21 20:43:20,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:20,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115128366] [2020-08-21 20:43:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:20,812 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 20:43:20,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115128366] [2020-08-21 20:43:20,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:20,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:43:20,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866768721] [2020-08-21 20:43:20,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:43:20,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:20,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:43:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:43:20,817 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-21 20:43:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:22,003 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-21 20:43:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:43:22,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 20:43:22,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:22,013 INFO L225 Difference]: With dead ends: 1180 [2020-08-21 20:43:22,013 INFO L226 Difference]: Without dead ends: 838 [2020-08-21 20:43:22,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:43:22,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-21 20:43:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-21 20:43:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-21 20:43:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-21 20:43:22,139 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-21 20:43:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:22,140 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-21 20:43:22,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:43:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-21 20:43:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 20:43:22,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:22,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:22,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:43:22,144 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:22,144 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-21 20:43:22,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:22,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617509539] [2020-08-21 20:43:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 20:43:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 20:43:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 20:43:22,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617509539] [2020-08-21 20:43:22,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:22,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 20:43:22,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054851269] [2020-08-21 20:43:22,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:43:22,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:22,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:43:22,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:43:22,361 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-21 20:43:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:24,058 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-21 20:43:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:43:24,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-21 20:43:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:24,067 INFO L225 Difference]: With dead ends: 2077 [2020-08-21 20:43:24,067 INFO L226 Difference]: Without dead ends: 1361 [2020-08-21 20:43:24,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:43:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-21 20:43:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-21 20:43:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-21 20:43:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-21 20:43:24,223 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-21 20:43:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:24,224 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-21 20:43:24,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:43:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-21 20:43:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 20:43:24,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:24,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:24,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:43:24,228 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-21 20:43:24,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:24,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476002157] [2020-08-21 20:43:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 20:43:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 20:43:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 20:43:24,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476002157] [2020-08-21 20:43:24,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:24,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:43:24,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280844967] [2020-08-21 20:43:24,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:43:24,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:43:24,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:43:24,441 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-21 20:43:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:26,135 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-21 20:43:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 20:43:26,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-21 20:43:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:26,145 INFO L225 Difference]: With dead ends: 3315 [2020-08-21 20:43:26,146 INFO L226 Difference]: Without dead ends: 1560 [2020-08-21 20:43:26,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-21 20:43:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-21 20:43:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-21 20:43:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-21 20:43:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-21 20:43:26,319 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-21 20:43:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:26,320 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-21 20:43:26,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:43:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-21 20:43:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 20:43:26,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:26,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:26,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:43:26,326 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:26,326 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-21 20:43:26,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:26,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555010434] [2020-08-21 20:43:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 20:43:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 20:43:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:43:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 20:43:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 20:43:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-21 20:43:26,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555010434] [2020-08-21 20:43:26,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:26,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 20:43:26,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626794205] [2020-08-21 20:43:26,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:43:26,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:43:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:43:26,565 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-21 20:43:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:27,969 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-21 20:43:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:43:27,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-21 20:43:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:27,979 INFO L225 Difference]: With dead ends: 3041 [2020-08-21 20:43:27,979 INFO L226 Difference]: Without dead ends: 1568 [2020-08-21 20:43:27,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:43:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-21 20:43:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-21 20:43:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-21 20:43:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-21 20:43:28,104 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-21 20:43:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:28,105 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-21 20:43:28,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:43:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-21 20:43:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-21 20:43:28,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:28,110 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, 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] [2020-08-21 20:43:28,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:43:28,111 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:28,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:28,111 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-21 20:43:28,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:28,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350796071] [2020-08-21 20:43:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 20:43:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 20:43:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 20:43:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:43:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 20:43:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-21 20:43:28,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350796071] [2020-08-21 20:43:28,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:28,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 20:43:28,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052070357] [2020-08-21 20:43:28,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:43:28,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:28,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:43:28,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:43:28,388 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-21 20:43:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:30,052 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-21 20:43:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 20:43:30,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-21 20:43:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:30,058 INFO L225 Difference]: With dead ends: 3478 [2020-08-21 20:43:30,059 INFO L226 Difference]: Without dead ends: 1006 [2020-08-21 20:43:30,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-21 20:43:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-21 20:43:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-21 20:43:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-21 20:43:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-21 20:43:30,152 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-21 20:43:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:30,152 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-21 20:43:30,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:43:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-21 20:43:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-21 20:43:30,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:30,156 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, 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] [2020-08-21 20:43:30,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:43:30,156 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:30,157 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-21 20:43:30,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:30,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743098357] [2020-08-21 20:43:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:43:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:43:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:43:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:43:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 20:43:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:43:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:43:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 20:43:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 20:43:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 20:43:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:43:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 20:43:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:43:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:43:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 20:43:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-21 20:43:30,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743098357] [2020-08-21 20:43:30,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:30,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:43:30,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410189284] [2020-08-21 20:43:30,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:43:30,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:30,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:43:30,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:43:30,501 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-21 20:43:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:32,557 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-21 20:43:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 20:43:32,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-21 20:43:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:32,559 INFO L225 Difference]: With dead ends: 1204 [2020-08-21 20:43:32,559 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 20:43:32,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-21 20:43:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 20:43:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 20:43:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 20:43:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 20:43:32,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-21 20:43:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:32,565 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 20:43:32,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:43:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 20:43:32,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 20:43:32,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 20:43:32,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 20:43:33,318 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 20:43:33,596 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 20:43:33,822 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 20:43:34,012 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 20:43:34,196 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 20:43:35,280 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-08-21 20:43:43,991 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-21 20:43:45,297 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-21 20:43:45,714 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-21 20:43:46,361 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:43:47,064 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:43:47,222 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-21 20:43:47,889 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:43:48,513 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:43:48,640 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-21 20:43:49,260 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:43:50,170 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-21 20:43:51,019 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-21 20:43:52,444 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-21 20:43:52,841 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-21 20:43:53,790 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-21 20:43:54,821 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-21 20:43:55,922 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-21 20:43:56,584 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:43:56,858 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-21 20:43:59,143 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-21 20:43:59,987 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-21 20:44:00,304 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-21 20:44:02,602 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-21 20:44:02,954 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-21 20:44:03,584 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 20:44:05,804 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-21 20:44:05,908 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-21 20:44:06,022 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-21 20:44:06,315 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-08-21 20:44:07,232 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-21 20:44:07,748 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-08-21 20:44:08,247 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-08-21 20:44:08,676 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60