/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -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 0.1.25-5644d1e-m [2020-08-18 12:17:47,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:17:47,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:17:47,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:17:47,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:17:47,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:17:47,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:17:47,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:17:47,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:17:47,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:17:47,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:17:47,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:17:47,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:17:47,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:17:47,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:17:47,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:17:47,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:17:47,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:17:47,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:17:47,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:17:47,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:17:47,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:17:47,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:17:47,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:17:47,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:17:47,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:17:47,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:17:47,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:17:47,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:17:47,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:17:47,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:17:47,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:17:47,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:17:47,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:17:47,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:17:47,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:17:47,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:17:47,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:17:47,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:17:47,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:17:47,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:17:47,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:17:47,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:17:47,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:17:47,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:17:47,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:17:47,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:17:47,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:17:47,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:17:47,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:17:47,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:17:47,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:17:47,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:17:47,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:17:47,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:17:47,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:17:47,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:17:47,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:17:47,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:17:47,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:17:47,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:17:47,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:17:47,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:17:47,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:17:47,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:17:47,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:17:47,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:17:47,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:17:47,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:17:47,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:17:47,634 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:17:47,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-18 12:17:47,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5fbe688/423fb2aecc0b49d2b310d23050f7c0ad/FLAG5de2c273e [2020-08-18 12:17:48,150 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:17:48,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-18 12:17:48,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5fbe688/423fb2aecc0b49d2b310d23050f7c0ad/FLAG5de2c273e [2020-08-18 12:17:48,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5fbe688/423fb2aecc0b49d2b310d23050f7c0ad [2020-08-18 12:17:48,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:17:48,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:17:48,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:17:48,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:17:48,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:17:48,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48, skipping insertion in model container [2020-08-18 12:17:48,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:17:48,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:17:48,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:17:48,782 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:17:48,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:17:48,931 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:17:48,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48 WrapperNode [2020-08-18 12:17:48,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:17:48,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:17:48,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:17:48,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:17:48,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... [2020-08-18 12:17:48,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:17:48,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:17:48,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:17:48,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:17:48,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:17:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:17:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:17:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 12:17:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 12:17:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 12:17:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 12:17:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 12:17:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 12:17:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 12:17:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 12:17:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 12:17:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 12:17:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 12:17:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 12:17:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 12:17:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 12:17:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 12:17:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 12:17:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 12:17:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 12:17:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:17:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:17:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 12:17:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 12:17:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 12:17:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 12:17:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 12:17:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 12:17:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 12:17:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 12:17:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 12:17:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 12:17:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 12:17:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 12:17:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 12:17:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:17:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:17:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:17:49,522 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:17:49,522 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 12:17:49,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:17:49 BoogieIcfgContainer [2020-08-18 12:17:49,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:17:49,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:17:49,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:17:49,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:17:49,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:17:48" (1/3) ... [2020-08-18 12:17:49,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce6536e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:17:49, skipping insertion in model container [2020-08-18 12:17:49,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:48" (2/3) ... [2020-08-18 12:17:49,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce6536e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:17:49, skipping insertion in model container [2020-08-18 12:17:49,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:17:49" (3/3) ... [2020-08-18 12:17:49,535 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-18 12:17:49,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:17:49,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:17:49,566 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:17:49,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:17:49,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:17:49,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:17:49,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:17:49,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:17:49,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:17:49,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:17:49,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:17:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-18 12:17:49,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:49,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:49,623 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] [2020-08-18 12:17:49,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-18 12:17:49,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:49,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011703851] [2020-08-18 12:17:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:17:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:17:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:17:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:17:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:17:50,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011703851] [2020-08-18 12:17:50,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:17:50,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:17:50,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132648113] [2020-08-18 12:17:50,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:17:50,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:17:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:17:50,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:17:50,194 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-18 12:17:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:17:52,171 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-18 12:17:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:17:52,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-18 12:17:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:17:52,198 INFO L225 Difference]: With dead ends: 501 [2020-08-18 12:17:52,198 INFO L226 Difference]: Without dead ends: 357 [2020-08-18 12:17:52,206 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 [2020-08-18 12:17:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-18 12:17:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-18 12:17:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 12:17:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-18 12:17:52,311 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-18 12:17:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:17:52,311 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-18 12:17:52,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:17:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-18 12:17:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:52,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:52,315 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] [2020-08-18 12:17:52,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:17:52,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-18 12:17:52,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:52,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887734960] [2020-08-18 12:17:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:17:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:17:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:17:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:17:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:17:52,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887734960] [2020-08-18 12:17:52,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:17:52,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:17:52,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753294370] [2020-08-18 12:17:52,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:17:52,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:17:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:17:52,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:17:52,530 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-18 12:17:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:17:53,637 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-18 12:17:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:17:53,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 12:17:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:17:53,646 INFO L225 Difference]: With dead ends: 573 [2020-08-18 12:17:53,647 INFO L226 Difference]: Without dead ends: 348 [2020-08-18 12:17:53,654 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 [2020-08-18 12:17:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-18 12:17:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-18 12:17:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 12:17:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-18 12:17:53,727 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-18 12:17:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:17:53,728 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-18 12:17:53,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:17:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-18 12:17:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:53,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:53,731 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] [2020-08-18 12:17:53,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:17:53,731 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:53,732 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-18 12:17:53,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:53,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708352270] [2020-08-18 12:17:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:17:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:17:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:17:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:17:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:17:53,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708352270] [2020-08-18 12:17:53,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:17:53,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:17:53,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640424854] [2020-08-18 12:17:53,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:17:53,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:17:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:17:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:17:53,926 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-18 12:17:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:17:55,306 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-18 12:17:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 12:17:55,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 12:17:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:17:55,314 INFO L225 Difference]: With dead ends: 696 [2020-08-18 12:17:55,314 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 12:17:55,316 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 [2020-08-18 12:17:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 12:17:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-18 12:17:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-18 12:17:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-18 12:17:55,356 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-18 12:17:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:17:55,356 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-18 12:17:55,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:17:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-18 12:17:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:55,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:55,358 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] [2020-08-18 12:17:55,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:17:55,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:55,359 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-18 12:17:55,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:55,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537952907] [2020-08-18 12:17:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:17:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:17:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:17:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:17:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:17:55,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537952907] [2020-08-18 12:17:55,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:17:55,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:17:55,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685679735] [2020-08-18 12:17:55,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:17:55,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:17:55,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:17:55,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:17:55,545 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-18 12:17:56,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:17:56,822 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-18 12:17:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:17:56,824 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 12:17:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:17:56,828 INFO L225 Difference]: With dead ends: 718 [2020-08-18 12:17:56,828 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 12:17:56,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:17:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 12:17:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-18 12:17:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 12:17:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-18 12:17:56,874 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-18 12:17:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:17:56,874 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-18 12:17:56,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:17:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-18 12:17:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:56,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:56,877 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] [2020-08-18 12:17:56,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:17:56,877 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:56,877 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-18 12:17:56,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:56,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699108970] [2020-08-18 12:17:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:56,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:56,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:17:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:17:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:17:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:17:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:17:57,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699108970] [2020-08-18 12:17:57,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:17:57,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:17:57,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449767838] [2020-08-18 12:17:57,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:17:57,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:17:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:17:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:17:57,067 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-18 12:17:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:17:58,296 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-18 12:17:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:17:58,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 12:17:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:17:58,300 INFO L225 Difference]: With dead ends: 748 [2020-08-18 12:17:58,301 INFO L226 Difference]: Without dead ends: 452 [2020-08-18 12:17:58,302 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 [2020-08-18 12:17:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-18 12:17:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-18 12:17:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-18 12:17:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-18 12:17:58,331 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-18 12:17:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:17:58,332 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-18 12:17:58,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:17:58,332 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-18 12:17:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:58,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:58,334 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] [2020-08-18 12:17:58,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:17:58,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-18 12:17:58,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:58,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609806555] [2020-08-18 12:17:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:17:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:17:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:17:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:17:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:17:58,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609806555] [2020-08-18 12:17:58,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:17:58,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:17:58,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431448169] [2020-08-18 12:17:58,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:17:58,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:17:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:17:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:17:58,495 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-18 12:17:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:17:59,847 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-18 12:17:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 12:17:59,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 12:17:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:17:59,853 INFO L225 Difference]: With dead ends: 894 [2020-08-18 12:17:59,853 INFO L226 Difference]: Without dead ends: 587 [2020-08-18 12:17:59,855 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 [2020-08-18 12:17:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-18 12:17:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-18 12:17:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 12:17:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-18 12:17:59,897 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-18 12:17:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:17:59,899 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-18 12:17:59,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:17:59,899 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-18 12:17:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:17:59,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:59,901 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] [2020-08-18 12:17:59,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:17:59,902 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:59,902 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-18 12:17:59,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:59,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626670431] [2020-08-18 12:17:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:17:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:17:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:17:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:59,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:17:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:17:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:17:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:17:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:18:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:00,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:18:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:18:00,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626670431] [2020-08-18 12:18:00,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:18:00,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:18:00,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752312193] [2020-08-18 12:18:00,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:18:00,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:00,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:18:00,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:18:00,043 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-18 12:18:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:01,237 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-18 12:18:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:18:01,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 12:18:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:01,245 INFO L225 Difference]: With dead ends: 1180 [2020-08-18 12:18:01,245 INFO L226 Difference]: Without dead ends: 838 [2020-08-18 12:18:01,247 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 [2020-08-18 12:18:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-18 12:18:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-18 12:18:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-18 12:18:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-18 12:18:01,331 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-18 12:18:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:01,333 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-18 12:18:01,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:18:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-18 12:18:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 12:18:01,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:01,337 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] [2020-08-18 12:18:01,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:18:01,337 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-18 12:18:01,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:01,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077137845] [2020-08-18 12:18:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:18:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:18:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:18:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:18:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:18:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:18:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:18:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 12:18:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 12:18:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-18 12:18:01,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077137845] [2020-08-18 12:18:01,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:18:01,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 12:18:01,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535998214] [2020-08-18 12:18:01,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:18:01,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:01,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:18:01,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:18:01,566 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-18 12:18:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:03,242 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-18 12:18:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:18:03,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-18 12:18:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:03,252 INFO L225 Difference]: With dead ends: 2077 [2020-08-18 12:18:03,253 INFO L226 Difference]: Without dead ends: 1361 [2020-08-18 12:18:03,256 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 [2020-08-18 12:18:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-18 12:18:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-18 12:18:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-18 12:18:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-18 12:18:03,355 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-18 12:18:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:03,356 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-18 12:18:03,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:18:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-18 12:18:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 12:18:03,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:03,358 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] [2020-08-18 12:18:03,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:18:03,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-18 12:18:03,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:03,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093408059] [2020-08-18 12:18:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:18:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:18:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:18:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:18:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:18:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:18:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:18:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 12:18:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 12:18:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 12:18:03,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093408059] [2020-08-18 12:18:03,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:18:03,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:18:03,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642257575] [2020-08-18 12:18:03,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:18:03,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:03,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:18:03,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:18:03,559 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-18 12:18:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:05,151 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-18 12:18:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 12:18:05,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-18 12:18:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:05,161 INFO L225 Difference]: With dead ends: 3315 [2020-08-18 12:18:05,161 INFO L226 Difference]: Without dead ends: 1560 [2020-08-18 12:18:05,168 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 [2020-08-18 12:18:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-18 12:18:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-18 12:18:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-18 12:18:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-18 12:18:05,287 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-18 12:18:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:05,288 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-18 12:18:05,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:18:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-18 12:18:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-18 12:18:05,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:05,294 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] [2020-08-18 12:18:05,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:18:05,294 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-18 12:18:05,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:05,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849001128] [2020-08-18 12:18:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:18:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:18:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:18:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:18:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:18:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:18:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:18:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 12:18:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 12:18:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:18:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 12:18:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 12:18:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-18 12:18:05,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849001128] [2020-08-18 12:18:05,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:18:05,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 12:18:05,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539032585] [2020-08-18 12:18:05,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:18:05,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:05,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:18:05,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:18:05,571 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-18 12:18:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:06,945 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-18 12:18:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 12:18:06,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-18 12:18:06,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:06,954 INFO L225 Difference]: With dead ends: 3041 [2020-08-18 12:18:06,954 INFO L226 Difference]: Without dead ends: 1568 [2020-08-18 12:18:06,959 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 [2020-08-18 12:18:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-18 12:18:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-18 12:18:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-18 12:18:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-18 12:18:07,075 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-18 12:18:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:07,075 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-18 12:18:07,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:18:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-18 12:18:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 12:18:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:07,082 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] [2020-08-18 12:18:07,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:18:07,083 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-18 12:18:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:07,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330376146] [2020-08-18 12:18:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:18:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:18:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:18:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:18:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:18:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:18:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:18:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 12:18:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 12:18:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 12:18:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 12:18:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 12:18:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-18 12:18:07,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330376146] [2020-08-18 12:18:07,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:18:07,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 12:18:07,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549825249] [2020-08-18 12:18:07,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:18:07,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:07,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:18:07,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:18:07,304 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-18 12:18:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:08,886 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-18 12:18:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 12:18:08,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-18 12:18:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:08,892 INFO L225 Difference]: With dead ends: 3478 [2020-08-18 12:18:08,893 INFO L226 Difference]: Without dead ends: 1006 [2020-08-18 12:18:08,900 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 [2020-08-18 12:18:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-18 12:18:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-18 12:18:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-18 12:18:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-18 12:18:08,980 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-18 12:18:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:08,981 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-18 12:18:08,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:18:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-18 12:18:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 12:18:08,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:08,984 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] [2020-08-18 12:18:08,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:18:08,984 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-18 12:18:08,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:08,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812781022] [2020-08-18 12:18:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:18:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:18:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:18:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:18:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:18:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:18:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:18:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 12:18:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 12:18:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 12:18:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 12:18:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:18:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:18:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:18:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 12:18:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-18 12:18:09,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812781022] [2020-08-18 12:18:09,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:18:09,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 12:18:09,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59043624] [2020-08-18 12:18:09,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:18:09,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:09,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:18:09,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:18:09,281 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-18 12:18:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:11,241 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-18 12:18:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 12:18:11,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-18 12:18:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:11,243 INFO L225 Difference]: With dead ends: 1204 [2020-08-18 12:18:11,243 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:18:11,247 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 [2020-08-18 12:18:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:18:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:18:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:18:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:18:11,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-18 12:18:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:11,249 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:18:11,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:18:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:18:11,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:18:11,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 12:18:11,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:18:11,896 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 12:18:12,172 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 12:18:12,515 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 12:18:12,745 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 12:18:12,949 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 12:18:14,001 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-08-18 12:18:22,594 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-18 12:18:23,822 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-18 12:18:24,206 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-18 12:18:24,819 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:25,456 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:25,608 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-18 12:18:26,230 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:26,829 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:27,541 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:28,402 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-18 12:18:29,215 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-18 12:18:30,543 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-18 12:18:30,937 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-18 12:18:31,842 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-18 12:18:32,830 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-18 12:18:33,854 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-18 12:18:34,457 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:34,712 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-18 12:18:36,861 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 12:18:37,622 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-18 12:18:37,915 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 12:18:40,056 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 12:18:40,380 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-18 12:18:40,993 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 12:18:43,122 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 12:18:43,329 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 12:18:43,599 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-08-18 12:18:44,458 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-18 12:18:44,952 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-08-18 12:18:45,423 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-08-18 12:18:45,841 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 12:18:46,193 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2020-08-18 12:18:47,366 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 128 DAG size of output: 75