/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -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 23:41:04,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:41:04,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:41:04,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:41:04,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:41:04,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:41:04,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:41:04,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:41:04,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:41:04,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:41:04,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:41:04,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:41:04,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:41:04,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:41:04,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:41:04,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:41:04,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:41:04,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:41:04,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:41:04,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:41:04,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:41:04,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:41:04,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:41:04,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:41:04,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:41:04,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:41:04,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:41:04,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:41:04,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:41:04,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:41:04,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:41:04,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:41:04,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:41:04,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:41:04,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:41:04,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:41:04,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:41:04,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:41:04,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:41:04,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:41:04,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:41:04,460 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 23:41:04,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:41:04,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:41:04,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:41:04,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:41:04,497 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:41:04,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:41:04,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:41:04,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:41:04,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:41:04,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:41:04,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:41:04,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:41:04,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:41:04,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:41:04,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:41:04,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:41:04,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:41:04,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:41:04,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:41:04,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:41:04,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:41:04,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:04,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:41:04,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:41:04,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:41:04,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:41:04,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:41:04,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:41:04,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:41:04,503 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=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:41:04,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:41:04,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:41:04,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:41:04,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:41:04,805 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:41:04,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-18 23:41:04,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b312f50e3/5dd2a2973a0b478d8857baca5f5c2299/FLAG0066210bb [2020-08-18 23:41:05,311 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:41:05,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-18 23:41:05,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b312f50e3/5dd2a2973a0b478d8857baca5f5c2299/FLAG0066210bb [2020-08-18 23:41:05,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b312f50e3/5dd2a2973a0b478d8857baca5f5c2299 [2020-08-18 23:41:05,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:41:05,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:41:05,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:05,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:41:05,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:41:05,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:05" (1/1) ... [2020-08-18 23:41:05,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2584cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:05, skipping insertion in model container [2020-08-18 23:41:05,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:05" (1/1) ... [2020-08-18 23:41:05,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:41:05,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:41:06,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:06,020 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:41:06,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:06,172 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:41:06,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06 WrapperNode [2020-08-18 23:41:06,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:06,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:41:06,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:41:06,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:41:06,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (1/1) ... [2020-08-18 23:41:06,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:41:06,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:41:06,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:41:06,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:41:06,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (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 23:41:06,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:41:06,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:41:06,289 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 23:41:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 23:41:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 23:41:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 23:41:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 23:41:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 23:41:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 23:41:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 23:41:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 23:41:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 23:41:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 23:41:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 23:41:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 23:41:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 23:41:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 23:41:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 23:41:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 23:41:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 23:41:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:41:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:41:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 23:41:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 23:41:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 23:41:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 23:41:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:41:06,294 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 23:41:06,294 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 23:41:06,294 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 23:41:06,294 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 23:41:06,294 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 23:41:06,294 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 23:41:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 23:41:06,296 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 23:41:06,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:41:06,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:41:06,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:41:06,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:41:06,749 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 23:41:06,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:06 BoogieIcfgContainer [2020-08-18 23:41:06,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:41:06,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:41:06,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:41:06,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:41:06,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:41:05" (1/3) ... [2020-08-18 23:41:06,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e5c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:06, skipping insertion in model container [2020-08-18 23:41:06,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:06" (2/3) ... [2020-08-18 23:41:06,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e5c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:06, skipping insertion in model container [2020-08-18 23:41:06,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:06" (3/3) ... [2020-08-18 23:41:06,763 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-18 23:41:06,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:41:06,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:41:06,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:41:06,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:41:06,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:41:06,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:41:06,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:41:06,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:41:06,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:41:06,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:41:06,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:41:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-18 23:41:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:06,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:06,868 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 23:41:06,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-18 23:41:06,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:06,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168624674] [2020-08-18 23:41:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:07,493 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 23:41:07,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168624674] [2020-08-18 23:41:07,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:07,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:41:07,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772746966] [2020-08-18 23:41:07,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:41:07,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:41:07,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:41:07,520 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-18 23:41:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:09,577 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-18 23:41:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:41:09,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-18 23:41:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:09,617 INFO L225 Difference]: With dead ends: 501 [2020-08-18 23:41:09,618 INFO L226 Difference]: Without dead ends: 357 [2020-08-18 23:41:09,624 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 23:41:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-18 23:41:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-18 23:41:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 23:41:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-18 23:41:09,717 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-18 23:41:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:09,718 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-18 23:41:09,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:41:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-18 23:41:09,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:09,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:09,722 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 23:41:09,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:41:09,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:09,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:09,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-18 23:41:09,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:09,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919370612] [2020-08-18 23:41:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:09,967 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 23:41:09,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919370612] [2020-08-18 23:41:09,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:09,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:41:09,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729771153] [2020-08-18 23:41:09,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:41:09,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:09,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:41:09,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:41:09,971 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-18 23:41:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:11,143 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-18 23:41:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:41:11,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 23:41:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:11,152 INFO L225 Difference]: With dead ends: 573 [2020-08-18 23:41:11,152 INFO L226 Difference]: Without dead ends: 348 [2020-08-18 23:41:11,159 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 23:41:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-18 23:41:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-18 23:41:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 23:41:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-18 23:41:11,234 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-18 23:41:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:11,235 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-18 23:41:11,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:41:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-18 23:41:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:11,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:11,245 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 23:41:11,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:41:11,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:11,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:11,246 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-18 23:41:11,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:11,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364754648] [2020-08-18 23:41:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:11,430 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 23:41:11,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364754648] [2020-08-18 23:41:11,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:11,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:41:11,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267822641] [2020-08-18 23:41:11,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:41:11,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:41:11,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:41:11,433 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-18 23:41:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:12,908 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-18 23:41:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:41:12,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 23:41:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:12,914 INFO L225 Difference]: With dead ends: 696 [2020-08-18 23:41:12,916 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 23:41:12,918 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 23:41:12,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 23:41:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-18 23:41:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-18 23:41:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-18 23:41:12,957 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-18 23:41:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:12,958 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-18 23:41:12,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:41:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-18 23:41:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:12,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:12,960 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 23:41:12,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:41:12,960 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-18 23:41:12,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:12,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391897884] [2020-08-18 23:41:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:13,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391897884] [2020-08-18 23:41:13,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:13,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:41:13,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521147446] [2020-08-18 23:41:13,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:41:13,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:13,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:41:13,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:41:13,159 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-18 23:41:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:14,437 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-18 23:41:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:14,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 23:41:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:14,444 INFO L225 Difference]: With dead ends: 718 [2020-08-18 23:41:14,444 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 23:41:14,447 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 23:41:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 23:41:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-18 23:41:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 23:41:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-18 23:41:14,492 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-18 23:41:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:14,494 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-18 23:41:14,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:41:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-18 23:41:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:14,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:14,496 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 23:41:14,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:41:14,496 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-18 23:41:14,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:14,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633477612] [2020-08-18 23:41:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:14,734 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 23:41:14,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633477612] [2020-08-18 23:41:14,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:14,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:41:14,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356864689] [2020-08-18 23:41:14,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:41:14,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:14,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:41:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:41:14,736 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-18 23:41:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:15,969 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-18 23:41:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:41:15,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 23:41:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:15,973 INFO L225 Difference]: With dead ends: 748 [2020-08-18 23:41:15,973 INFO L226 Difference]: Without dead ends: 452 [2020-08-18 23:41:15,974 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 23:41:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-18 23:41:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-18 23:41:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-18 23:41:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-18 23:41:16,003 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-18 23:41:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:16,004 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-18 23:41:16,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:41:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-18 23:41:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:16,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:16,005 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 23:41:16,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:41:16,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-18 23:41:16,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:16,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873129806] [2020-08-18 23:41:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,158 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 23:41:16,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873129806] [2020-08-18 23:41:16,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:16,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:41:16,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971668710] [2020-08-18 23:41:16,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:41:16,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:16,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:41:16,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:41:16,161 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-18 23:41:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:17,624 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-18 23:41:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:41:17,626 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 23:41:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:17,630 INFO L225 Difference]: With dead ends: 894 [2020-08-18 23:41:17,630 INFO L226 Difference]: Without dead ends: 587 [2020-08-18 23:41:17,632 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 23:41:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-18 23:41:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-18 23:41:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 23:41:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-18 23:41:17,671 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-18 23:41:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:17,671 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-18 23:41:17,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:41:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-18 23:41:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 23:41:17,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:17,673 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 23:41:17,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:41:17,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:17,674 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-18 23:41:17,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:17,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316398108] [2020-08-18 23:41:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,823 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 23:41:17,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316398108] [2020-08-18 23:41:17,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:17,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:41:17,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149844439] [2020-08-18 23:41:17,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:41:17,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:17,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:41:17,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:41:17,829 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-18 23:41:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:19,057 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-18 23:41:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:19,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 23:41:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:19,067 INFO L225 Difference]: With dead ends: 1180 [2020-08-18 23:41:19,067 INFO L226 Difference]: Without dead ends: 838 [2020-08-18 23:41:19,070 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 23:41:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-18 23:41:19,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-18 23:41:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-18 23:41:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-18 23:41:19,168 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-18 23:41:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:19,169 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-18 23:41:19,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:41:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-18 23:41:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 23:41:19,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:19,174 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 23:41:19,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:41:19,174 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:19,175 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-18 23:41:19,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:19,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593158331] [2020-08-18 23:41:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 23:41:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,452 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 23:41:19,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593158331] [2020-08-18 23:41:19,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:41:19,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 23:41:19,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125071851] [2020-08-18 23:41:19,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:41:19,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:19,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:41:19,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:41:19,455 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-18 23:41:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:21,097 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-18 23:41:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:41:21,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-18 23:41:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:21,108 INFO L225 Difference]: With dead ends: 2077 [2020-08-18 23:41:21,108 INFO L226 Difference]: Without dead ends: 1361 [2020-08-18 23:41:21,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-18 23:41:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-18 23:41:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-18 23:41:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-18 23:41:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-18 23:41:21,245 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-18 23:41:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:21,245 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-18 23:41:21,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:41:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-18 23:41:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 23:41:21,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:21,248 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 23:41:21,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:41:21,248 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:21,248 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-18 23:41:21,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:21,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631572043] [2020-08-18 23:41:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 23:41:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:21,437 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 23:41:21,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631572043] [2020-08-18 23:41:21,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:21,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:41:21,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830481551] [2020-08-18 23:41:21,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:41:21,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:21,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:41:21,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:41:21,444 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-18 23:41:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:23,203 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-18 23:41:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:23,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-18 23:41:23,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:23,217 INFO L225 Difference]: With dead ends: 3315 [2020-08-18 23:41:23,217 INFO L226 Difference]: Without dead ends: 1560 [2020-08-18 23:41:23,224 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 23:41:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-18 23:41:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-18 23:41:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-18 23:41:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-18 23:41:23,348 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-18 23:41:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:23,350 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-18 23:41:23,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:41:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-18 23:41:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-18 23:41:23,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:23,356 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 23:41:23,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:41:23,357 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:23,357 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-18 23:41:23,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:23,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089455048] [2020-08-18 23:41:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:41:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 23:41:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:41:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 23:41:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 23:41:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,583 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 23:41:23,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089455048] [2020-08-18 23:41:23,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:41:23,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 23:41:23,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456838129] [2020-08-18 23:41:23,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:41:23,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:23,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:41:23,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:41:23,586 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-18 23:41:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:25,031 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-18 23:41:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:41:25,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-18 23:41:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:25,040 INFO L225 Difference]: With dead ends: 3041 [2020-08-18 23:41:25,041 INFO L226 Difference]: Without dead ends: 1568 [2020-08-18 23:41:25,046 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 23:41:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-18 23:41:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-18 23:41:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-18 23:41:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-18 23:41:25,161 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-18 23:41:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:25,162 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-18 23:41:25,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:41:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-18 23:41:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 23:41:25,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:25,168 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 23:41:25,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:41:25,168 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-18 23:41:25,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:25,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194408573] [2020-08-18 23:41:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 23:41:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 23:41:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 23:41:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 23:41:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,490 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 23:41:25,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194408573] [2020-08-18 23:41:25,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:41:25,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:41:25,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299686224] [2020-08-18 23:41:25,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:41:25,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:25,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:41:25,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:41:25,509 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-18 23:41:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:27,161 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-18 23:41:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:27,161 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-18 23:41:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:27,167 INFO L225 Difference]: With dead ends: 3478 [2020-08-18 23:41:27,167 INFO L226 Difference]: Without dead ends: 1006 [2020-08-18 23:41:27,174 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 23:41:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-18 23:41:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-18 23:41:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-18 23:41:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-18 23:41:27,248 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-18 23:41:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:27,249 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-18 23:41:27,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:41:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-18 23:41:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 23:41:27,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:27,252 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 23:41:27,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:41:27,253 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:27,253 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-18 23:41:27,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:27,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002338254] [2020-08-18 23:41:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:41:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:41:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:41:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:41:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:41:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:41:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 23:41:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:41:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:41:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 23:41:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:41:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:41:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 23:41:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:27,583 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 23:41:27,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002338254] [2020-08-18 23:41:27,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:41:27,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 23:41:27,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748984692] [2020-08-18 23:41:27,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:27,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:27,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:27,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:27,586 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-18 23:41:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:29,776 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-18 23:41:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:41:29,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-18 23:41:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:29,778 INFO L225 Difference]: With dead ends: 1204 [2020-08-18 23:41:29,778 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 23:41:29,781 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 23:41:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 23:41:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 23:41:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 23:41:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 23:41:29,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-18 23:41:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:29,783 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 23:41:29,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 23:41:29,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 23:41:29,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:41:29,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 23:41:30,560 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 23:41:30,865 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 23:41:31,100 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 23:41:31,271 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 23:41:31,437 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 23:41:32,443 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-08-18 23:41:41,022 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-18 23:41:42,345 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-18 23:41:42,753 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-18 23:41:43,367 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:41:44,042 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:41:44,202 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-18 23:41:44,860 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:41:45,520 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:41:45,646 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-18 23:41:46,301 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:41:47,231 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-18 23:41:48,098 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-18 23:41:49,509 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-18 23:41:49,905 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-18 23:41:50,886 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-18 23:41:51,887 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-18 23:41:52,966 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-18 23:41:53,605 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:41:53,883 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-18 23:41:56,074 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 23:41:56,877 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-18 23:41:57,196 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 23:41:59,422 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 23:41:59,792 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-18 23:42:00,469 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 23:42:02,668 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 23:42:02,771 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-18 23:42:02,882 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 23:42:03,177 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-08-18 23:42:04,078 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-18 23:42:04,595 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-08-18 23:42:05,086 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-08-18 23:42:05,504 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60