/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:00:19,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:00:19,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:00:19,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:00:19,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:00:19,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:00:19,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:00:19,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:00:19,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:00:19,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:00:19,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:00:19,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:00:19,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:00:19,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:00:19,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:00:19,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:00:19,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:00:19,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:00:19,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:00:19,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:00:19,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:00:19,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:00:19,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:00:19,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:00:19,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:00:19,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:00:19,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:00:19,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:00:19,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:00:19,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:00:19,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:00:19,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:00:19,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:00:19,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:00:19,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:00:19,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:00:19,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:00:19,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:00:19,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:00:19,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:00:19,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:00:19,297 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 [2020-08-22 04:00:19,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:00:19,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:00:19,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:00:19,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:00:19,321 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:00:19,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:00:19,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:00:19,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:00:19,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:00:19,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:00:19,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:00:19,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:00:19,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:00:19,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:00:19,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:00:19,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:00:19,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:00:19,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:00:19,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:00:19,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:00:19,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:00:19,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:00:19,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:00:19,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:00:19,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:00:19,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:00:19,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:00:19,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:00:19,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:00:19,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 04:00:19,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:00:19,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:00:19,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:00:19,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:00:19,632 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:00:19,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-22 04:00:19,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb84c9783/ee52a9624a6d43f081c121ca3e27e0b4/FLAG10f27deac [2020-08-22 04:00:20,189 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:00:20,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-22 04:00:20,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb84c9783/ee52a9624a6d43f081c121ca3e27e0b4/FLAG10f27deac [2020-08-22 04:00:20,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb84c9783/ee52a9624a6d43f081c121ca3e27e0b4 [2020-08-22 04:00:20,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:00:20,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:00:20,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:00:20,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:00:20,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:00:20,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:20,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20, skipping insertion in model container [2020-08-22 04:00:20,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:20,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:00:20,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:00:20,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:00:20,851 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:00:20,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:00:20,918 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:00:20,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20 WrapperNode [2020-08-22 04:00:20,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:00:20,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:00:20,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:00:20,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:00:21,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (1/1) ... [2020-08-22 04:00:21,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:00:21,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:00:21,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:00:21,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:00:21,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (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 [2020-08-22 04:00:21,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:00:21,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:00:21,118 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 04:00:21,118 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 04:00:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 04:00:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-22 04:00:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 04:00:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 04:00:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-22 04:00:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 04:00:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 04:00:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 04:00:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 04:00:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 04:00:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 04:00:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 04:00:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 04:00:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 04:00:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 04:00:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 04:00:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 04:00:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 04:00:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:00:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:00:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 04:00:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 04:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-22 04:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 04:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 04:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 04:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 04:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 04:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 04:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:00:21,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:00:21,659 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 04:00:21,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:00:21 BoogieIcfgContainer [2020-08-22 04:00:21,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:00:21,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:00:21,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:00:21,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:00:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:00:20" (1/3) ... [2020-08-22 04:00:21,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd3221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:00:21, skipping insertion in model container [2020-08-22 04:00:21,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:20" (2/3) ... [2020-08-22 04:00:21,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd3221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:00:21, skipping insertion in model container [2020-08-22 04:00:21,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:00:21" (3/3) ... [2020-08-22 04:00:21,675 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-08-22 04:00:21,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:00:21,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:00:21,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:00:21,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:00:21,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:00:21,735 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:00:21,735 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:00:21,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:00:21,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:00:21,736 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:00:21,736 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:00:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 04:00:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:21,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:21,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:21,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1996614335, now seen corresponding path program 1 times [2020-08-22 04:00:21,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:21,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872788529] [2020-08-22 04:00:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:22,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872788529] [2020-08-22 04:00:22,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:22,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:00:22,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160988502] [2020-08-22 04:00:22,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:00:22,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:22,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:00:22,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:00:22,295 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-08-22 04:00:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:23,901 INFO L93 Difference]: Finished difference Result 412 states and 626 transitions. [2020-08-22 04:00:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:00:23,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-22 04:00:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:23,936 INFO L225 Difference]: With dead ends: 412 [2020-08-22 04:00:23,936 INFO L226 Difference]: Without dead ends: 247 [2020-08-22 04:00:23,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:00:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-08-22 04:00:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2020-08-22 04:00:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 04:00:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2020-08-22 04:00:24,037 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 90 [2020-08-22 04:00:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:24,037 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2020-08-22 04:00:24,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:00:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2020-08-22 04:00:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:24,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:24,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:24,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:00:24,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash -387310403, now seen corresponding path program 1 times [2020-08-22 04:00:24,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:24,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278327728] [2020-08-22 04:00:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:24,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278327728] [2020-08-22 04:00:24,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:24,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:00:24,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184712224] [2020-08-22 04:00:24,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:00:24,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:00:24,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:00:24,344 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand 9 states. [2020-08-22 04:00:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:26,488 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2020-08-22 04:00:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:00:26,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-08-22 04:00:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:26,505 INFO L225 Difference]: With dead ends: 579 [2020-08-22 04:00:26,506 INFO L226 Difference]: Without dead ends: 439 [2020-08-22 04:00:26,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:00:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-22 04:00:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 294. [2020-08-22 04:00:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-22 04:00:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 393 transitions. [2020-08-22 04:00:26,644 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 393 transitions. Word has length 90 [2020-08-22 04:00:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:26,645 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 393 transitions. [2020-08-22 04:00:26,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:00:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 393 transitions. [2020-08-22 04:00:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:26,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:26,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:26,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:00:26,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1952833149, now seen corresponding path program 1 times [2020-08-22 04:00:26,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:26,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823358963] [2020-08-22 04:00:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:26,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823358963] [2020-08-22 04:00:26,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:26,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:26,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432459164] [2020-08-22 04:00:26,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:26,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:26,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:26,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:26,997 INFO L87 Difference]: Start difference. First operand 294 states and 393 transitions. Second operand 10 states. [2020-08-22 04:00:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:28,192 INFO L93 Difference]: Finished difference Result 704 states and 993 transitions. [2020-08-22 04:00:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:00:28,193 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:28,197 INFO L225 Difference]: With dead ends: 704 [2020-08-22 04:00:28,197 INFO L226 Difference]: Without dead ends: 430 [2020-08-22 04:00:28,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:00:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-22 04:00:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 294. [2020-08-22 04:00:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-22 04:00:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2020-08-22 04:00:28,236 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 90 [2020-08-22 04:00:28,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:28,237 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2020-08-22 04:00:28,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2020-08-22 04:00:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:28,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:28,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:28,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:00:28,239 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 227206333, now seen corresponding path program 1 times [2020-08-22 04:00:28,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:28,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426725187] [2020-08-22 04:00:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:28,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426725187] [2020-08-22 04:00:28,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:28,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:28,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604119463] [2020-08-22 04:00:28,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:28,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:28,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:28,438 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand 10 states. [2020-08-22 04:00:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:29,666 INFO L93 Difference]: Finished difference Result 700 states and 971 transitions. [2020-08-22 04:00:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:00:29,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:29,674 INFO L225 Difference]: With dead ends: 700 [2020-08-22 04:00:29,675 INFO L226 Difference]: Without dead ends: 426 [2020-08-22 04:00:29,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:00:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-22 04:00:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-08-22 04:00:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-22 04:00:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 379 transitions. [2020-08-22 04:00:29,728 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 379 transitions. Word has length 90 [2020-08-22 04:00:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:29,731 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 379 transitions. [2020-08-22 04:00:29,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 379 transitions. [2020-08-22 04:00:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:29,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:29,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:29,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:00:29,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1418466941, now seen corresponding path program 1 times [2020-08-22 04:00:29,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:29,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91415573] [2020-08-22 04:00:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:29,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91415573] [2020-08-22 04:00:29,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:29,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:29,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936965666] [2020-08-22 04:00:29,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:29,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:29,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:29,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:29,942 INFO L87 Difference]: Start difference. First operand 294 states and 379 transitions. Second operand 10 states. [2020-08-22 04:00:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:31,675 INFO L93 Difference]: Finished difference Result 855 states and 1230 transitions. [2020-08-22 04:00:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:00:31,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:31,682 INFO L225 Difference]: With dead ends: 855 [2020-08-22 04:00:31,682 INFO L226 Difference]: Without dead ends: 581 [2020-08-22 04:00:31,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-22 04:00:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-08-22 04:00:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 366. [2020-08-22 04:00:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-22 04:00:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 457 transitions. [2020-08-22 04:00:31,736 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 457 transitions. Word has length 90 [2020-08-22 04:00:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:31,736 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 457 transitions. [2020-08-22 04:00:31,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 457 transitions. [2020-08-22 04:00:31,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:31,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:31,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:31,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:00:31,739 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1504622653, now seen corresponding path program 1 times [2020-08-22 04:00:31,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:31,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494861894] [2020-08-22 04:00:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:31,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494861894] [2020-08-22 04:00:31,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:31,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:31,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379504377] [2020-08-22 04:00:31,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:31,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:31,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:31,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:31,940 INFO L87 Difference]: Start difference. First operand 366 states and 457 transitions. Second operand 10 states. [2020-08-22 04:00:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:33,555 INFO L93 Difference]: Finished difference Result 877 states and 1164 transitions. [2020-08-22 04:00:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:00:33,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:33,560 INFO L225 Difference]: With dead ends: 877 [2020-08-22 04:00:33,561 INFO L226 Difference]: Without dead ends: 532 [2020-08-22 04:00:33,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:00:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-22 04:00:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-08-22 04:00:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-08-22 04:00:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 465 transitions. [2020-08-22 04:00:33,608 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 465 transitions. Word has length 90 [2020-08-22 04:00:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:33,609 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 465 transitions. [2020-08-22 04:00:33,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 465 transitions. [2020-08-22 04:00:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:33,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:33,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:33,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:00:33,611 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash -523963457, now seen corresponding path program 1 times [2020-08-22 04:00:33,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:33,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693170291] [2020-08-22 04:00:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:33,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693170291] [2020-08-22 04:00:33,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:33,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:33,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54773654] [2020-08-22 04:00:33,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:33,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:33,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:33,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:33,802 INFO L87 Difference]: Start difference. First operand 376 states and 465 transitions. Second operand 10 states. [2020-08-22 04:00:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:35,529 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2020-08-22 04:00:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:00:35,530 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:35,534 INFO L225 Difference]: With dead ends: 915 [2020-08-22 04:00:35,535 INFO L226 Difference]: Without dead ends: 560 [2020-08-22 04:00:35,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:00:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-22 04:00:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 396. [2020-08-22 04:00:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-22 04:00:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 485 transitions. [2020-08-22 04:00:35,580 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 485 transitions. Word has length 90 [2020-08-22 04:00:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:35,581 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 485 transitions. [2020-08-22 04:00:35,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 485 transitions. [2020-08-22 04:00:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:35,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:35,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:35,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:00:35,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash -275816963, now seen corresponding path program 1 times [2020-08-22 04:00:35,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:35,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738005185] [2020-08-22 04:00:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738005185] [2020-08-22 04:00:35,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:35,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:35,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620051474] [2020-08-22 04:00:35,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:35,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:35,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:35,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:35,816 INFO L87 Difference]: Start difference. First operand 396 states and 485 transitions. Second operand 10 states. [2020-08-22 04:00:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:37,463 INFO L93 Difference]: Finished difference Result 939 states and 1222 transitions. [2020-08-22 04:00:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:00:37,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:37,469 INFO L225 Difference]: With dead ends: 939 [2020-08-22 04:00:37,470 INFO L226 Difference]: Without dead ends: 564 [2020-08-22 04:00:37,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:00:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-22 04:00:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 406. [2020-08-22 04:00:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-08-22 04:00:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 493 transitions. [2020-08-22 04:00:37,519 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 493 transitions. Word has length 90 [2020-08-22 04:00:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:37,520 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 493 transitions. [2020-08-22 04:00:37,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 493 transitions. [2020-08-22 04:00:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:37,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:37,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:37,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:00:37,522 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:37,522 INFO L82 PathProgramCache]: Analyzing trace with hash -348203521, now seen corresponding path program 1 times [2020-08-22 04:00:37,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:37,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733303780] [2020-08-22 04:00:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:37,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733303780] [2020-08-22 04:00:37,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:37,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:37,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585529678] [2020-08-22 04:00:37,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:37,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:37,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:37,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:37,712 INFO L87 Difference]: Start difference. First operand 406 states and 493 transitions. Second operand 10 states. [2020-08-22 04:00:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:39,527 INFO L93 Difference]: Finished difference Result 1144 states and 1493 transitions. [2020-08-22 04:00:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 04:00:39,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-22 04:00:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:39,534 INFO L225 Difference]: With dead ends: 1144 [2020-08-22 04:00:39,534 INFO L226 Difference]: Without dead ends: 758 [2020-08-22 04:00:39,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-08-22 04:00:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-22 04:00:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 467. [2020-08-22 04:00:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-08-22 04:00:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 547 transitions. [2020-08-22 04:00:39,612 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 547 transitions. Word has length 90 [2020-08-22 04:00:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:39,613 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 547 transitions. [2020-08-22 04:00:39,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 547 transitions. [2020-08-22 04:00:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:00:39,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:39,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:39,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:00:39,616 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:39,617 INFO L82 PathProgramCache]: Analyzing trace with hash -286163907, now seen corresponding path program 1 times [2020-08-22 04:00:39,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:39,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87908554] [2020-08-22 04:00:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:39,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87908554] [2020-08-22 04:00:39,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:39,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:00:39,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599464980] [2020-08-22 04:00:39,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:00:39,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:39,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:00:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:00:39,752 INFO L87 Difference]: Start difference. First operand 467 states and 547 transitions. Second operand 7 states. [2020-08-22 04:00:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:41,399 INFO L93 Difference]: Finished difference Result 1503 states and 1877 transitions. [2020-08-22 04:00:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:00:41,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-22 04:00:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:41,407 INFO L225 Difference]: With dead ends: 1503 [2020-08-22 04:00:41,407 INFO L226 Difference]: Without dead ends: 1058 [2020-08-22 04:00:41,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:00:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-08-22 04:00:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 847. [2020-08-22 04:00:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-22 04:00:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1018 transitions. [2020-08-22 04:00:41,485 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1018 transitions. Word has length 90 [2020-08-22 04:00:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:41,486 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1018 transitions. [2020-08-22 04:00:41,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:00:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1018 transitions. [2020-08-22 04:00:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 04:00:41,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:41,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:41,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:00:41,488 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:41,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:41,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1417763379, now seen corresponding path program 1 times [2020-08-22 04:00:41,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:41,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167779453] [2020-08-22 04:00:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:41,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167779453] [2020-08-22 04:00:41,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:41,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:00:41,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943239630] [2020-08-22 04:00:41,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:00:41,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:00:41,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:00:41,614 INFO L87 Difference]: Start difference. First operand 847 states and 1018 transitions. Second operand 7 states. [2020-08-22 04:00:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:43,258 INFO L93 Difference]: Finished difference Result 2813 states and 3701 transitions. [2020-08-22 04:00:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:00:43,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-08-22 04:00:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:43,270 INFO L225 Difference]: With dead ends: 2813 [2020-08-22 04:00:43,270 INFO L226 Difference]: Without dead ends: 1993 [2020-08-22 04:00:43,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:00:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-22 04:00:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1710. [2020-08-22 04:00:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-08-22 04:00:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2141 transitions. [2020-08-22 04:00:43,456 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2141 transitions. Word has length 91 [2020-08-22 04:00:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:43,457 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2141 transitions. [2020-08-22 04:00:43,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:00:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2141 transitions. [2020-08-22 04:00:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 04:00:43,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:43,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:43,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:00:43,460 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:43,461 INFO L82 PathProgramCache]: Analyzing trace with hash 36587625, now seen corresponding path program 1 times [2020-08-22 04:00:43,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:43,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238403898] [2020-08-22 04:00:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:00:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:00:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 04:00:43,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238403898] [2020-08-22 04:00:43,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:43,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:00:43,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751976274] [2020-08-22 04:00:43,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:00:43,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:00:43,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:00:43,619 INFO L87 Difference]: Start difference. First operand 1710 states and 2141 transitions. Second operand 8 states. [2020-08-22 04:00:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:45,793 INFO L93 Difference]: Finished difference Result 5783 states and 7853 transitions. [2020-08-22 04:00:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:00:45,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-08-22 04:00:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:45,811 INFO L225 Difference]: With dead ends: 5783 [2020-08-22 04:00:45,811 INFO L226 Difference]: Without dead ends: 3127 [2020-08-22 04:00:45,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:00:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2020-08-22 04:00:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2795. [2020-08-22 04:00:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-08-22 04:00:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3657 transitions. [2020-08-22 04:00:46,157 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3657 transitions. Word has length 111 [2020-08-22 04:00:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:46,157 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3657 transitions. [2020-08-22 04:00:46,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:00:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3657 transitions. [2020-08-22 04:00:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 04:00:46,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:46,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:46,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:00:46,166 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:46,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1328978533, now seen corresponding path program 1 times [2020-08-22 04:00:46,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:46,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460042242] [2020-08-22 04:00:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:00:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:00:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:00:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-08-22 04:00:46,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460042242] [2020-08-22 04:00:46,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:46,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:46,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319262113] [2020-08-22 04:00:46,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:46,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:46,388 INFO L87 Difference]: Start difference. First operand 2795 states and 3657 transitions. Second operand 10 states. [2020-08-22 04:00:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:48,291 INFO L93 Difference]: Finished difference Result 5893 states and 7833 transitions. [2020-08-22 04:00:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:00:48,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 155 [2020-08-22 04:00:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:48,316 INFO L225 Difference]: With dead ends: 5893 [2020-08-22 04:00:48,316 INFO L226 Difference]: Without dead ends: 3120 [2020-08-22 04:00:48,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:00:48,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-08-22 04:00:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2788. [2020-08-22 04:00:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-08-22 04:00:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3646 transitions. [2020-08-22 04:00:48,784 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3646 transitions. Word has length 155 [2020-08-22 04:00:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:48,784 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3646 transitions. [2020-08-22 04:00:48,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3646 transitions. [2020-08-22 04:00:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 04:00:48,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:48,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:48,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 04:00:48,789 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:48,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1178118941, now seen corresponding path program 1 times [2020-08-22 04:00:48,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:48,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744962981] [2020-08-22 04:00:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:00:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:00:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:00:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-22 04:00:48,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744962981] [2020-08-22 04:00:48,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:48,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:00:48,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644692147] [2020-08-22 04:00:48,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:00:48,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:48,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:00:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:00:48,988 INFO L87 Difference]: Start difference. First operand 2788 states and 3646 transitions. Second operand 9 states. [2020-08-22 04:00:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:51,659 INFO L93 Difference]: Finished difference Result 8089 states and 11637 transitions. [2020-08-22 04:00:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:00:51,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-08-22 04:00:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:51,704 INFO L225 Difference]: With dead ends: 8089 [2020-08-22 04:00:51,704 INFO L226 Difference]: Without dead ends: 5323 [2020-08-22 04:00:51,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-08-22 04:00:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-08-22 04:00:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 4852. [2020-08-22 04:00:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-08-22 04:00:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6633 transitions. [2020-08-22 04:00:52,691 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6633 transitions. Word has length 155 [2020-08-22 04:00:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:52,692 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 6633 transitions. [2020-08-22 04:00:52,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:00:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6633 transitions. [2020-08-22 04:00:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 04:00:52,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:52,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:52,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 04:00:52,702 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash -390866386, now seen corresponding path program 1 times [2020-08-22 04:00:52,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:52,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580673708] [2020-08-22 04:00:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 04:00:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:00:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 04:00:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:53,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-22 04:00:53,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580673708] [2020-08-22 04:00:53,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:53,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:53,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798375964] [2020-08-22 04:00:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:53,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:53,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:53,096 INFO L87 Difference]: Start difference. First operand 4852 states and 6633 transitions. Second operand 10 states. [2020-08-22 04:00:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:56,735 INFO L93 Difference]: Finished difference Result 12975 states and 19533 transitions. [2020-08-22 04:00:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 04:00:56,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 04:00:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:56,776 INFO L225 Difference]: With dead ends: 12975 [2020-08-22 04:00:56,776 INFO L226 Difference]: Without dead ends: 6726 [2020-08-22 04:00:56,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-08-22 04:00:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-08-22 04:00:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6174. [2020-08-22 04:00:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-08-22 04:00:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8297 transitions. [2020-08-22 04:00:57,554 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8297 transitions. Word has length 156 [2020-08-22 04:00:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:57,555 INFO L479 AbstractCegarLoop]: Abstraction has 6174 states and 8297 transitions. [2020-08-22 04:00:57,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8297 transitions. [2020-08-22 04:00:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 04:00:57,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:57,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:57,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 04:00:57,565 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1382123670, now seen corresponding path program 1 times [2020-08-22 04:00:57,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:57,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639651491] [2020-08-22 04:00:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:00:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:00:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:00:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:00:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:00:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:00:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 04:00:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 04:00:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-22 04:00:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-22 04:00:57,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639651491] [2020-08-22 04:00:57,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:57,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:00:57,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864422343] [2020-08-22 04:00:57,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:00:57,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:57,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:00:57,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:00:57,851 INFO L87 Difference]: Start difference. First operand 6174 states and 8297 transitions. Second operand 11 states. [2020-08-22 04:00:59,993 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-08-22 04:01:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:01,067 INFO L93 Difference]: Finished difference Result 12270 states and 16979 transitions. [2020-08-22 04:01:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 04:01:01,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-08-22 04:01:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:01,086 INFO L225 Difference]: With dead ends: 12270 [2020-08-22 04:01:01,087 INFO L226 Difference]: Without dead ends: 3143 [2020-08-22 04:01:01,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:01:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-08-22 04:01:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2950. [2020-08-22 04:01:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2950 states. [2020-08-22 04:01:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3443 transitions. [2020-08-22 04:01:01,371 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3443 transitions. Word has length 207 [2020-08-22 04:01:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:01,372 INFO L479 AbstractCegarLoop]: Abstraction has 2950 states and 3443 transitions. [2020-08-22 04:01:01,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:01:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3443 transitions. [2020-08-22 04:01:01,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-22 04:01:01,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:01,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:01:01,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 04:01:01,378 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:01,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:01,378 INFO L82 PathProgramCache]: Analyzing trace with hash 89354437, now seen corresponding path program 1 times [2020-08-22 04:01:01,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:01,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048095170] [2020-08-22 04:01:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:01:01,515 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:01:01,515 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:01:01,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 04:01:01,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:01:01 BoogieIcfgContainer [2020-08-22 04:01:01,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:01:01,560 INFO L168 Benchmark]: Toolchain (without parser) took 41002.33 ms. Allocated memory was 138.9 MB in the beginning and 825.2 MB in the end (delta: 686.3 MB). Free memory was 102.2 MB in the beginning and 681.2 MB in the end (delta: -579.0 MB). Peak memory consumption was 666.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:01,561 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 04:01:01,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.99 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 87.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:01,562 INFO L168 Benchmark]: Boogie Preprocessor took 130.77 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 87.6 MB in the beginning and 178.4 MB in the end (delta: -90.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:01,562 INFO L168 Benchmark]: RCFGBuilder took 614.62 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 141.5 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:01,563 INFO L168 Benchmark]: TraceAbstraction took 39890.72 ms. Allocated memory was 201.3 MB in the beginning and 825.2 MB in the end (delta: 623.9 MB). Free memory was 141.5 MB in the beginning and 681.2 MB in the end (delta: -539.7 MB). Peak memory consumption was 643.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:01,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.99 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 87.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.77 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 87.6 MB in the beginning and 178.4 MB in the end (delta: -90.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 614.62 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 141.5 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39890.72 ms. Allocated memory was 201.3 MB in the beginning and 825.2 MB in the end (delta: 623.9 MB). Free memory was 141.5 MB in the beginning and 681.2 MB in the end (delta: -539.7 MB). Peak memory consumption was 643.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.7s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 32.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2575 SDtfs, 12365 SDslu, 744 SDs, 0 SdLazy, 16133 SolverSat, 6323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 771 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 3858 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1983 NumberOfCodeBlocks, 1983 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1759 ConstructedInterpolants, 0 QuantifiedInterpolants, 510319 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 266/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...