/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:06:14,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:06:14,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:06:14,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:06:14,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:06:14,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:06:14,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:06:14,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:06:14,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:06:14,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:06:14,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:06:14,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:06:14,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:06:14,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:06:14,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:06:14,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:06:14,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:06:14,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:06:14,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:06:14,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:06:14,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:06:14,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:06:14,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:06:14,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:06:15,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:06:15,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:06:15,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:06:15,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:06:15,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:06:15,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:06:15,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:06:15,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:06:15,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:06:15,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:06:15,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:06:15,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:06:15,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:06:15,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:06:15,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:06:15,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:06:15,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:06:15,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:06:15,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:06:15,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:06:15,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:06:15,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:06:15,070 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:06:15,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:06:15,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:06:15,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:06:15,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:06:15,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:06:15,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:06:15,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:06:15,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:06:15,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:06:15,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:06:15,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:06:15,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:06:15,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:06:15,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:06:15,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:06:15,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:06:15,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:06:15,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:06:15,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:06:15,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:06:15,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:06:15,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:06:15,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:06:15,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:06:15,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:06:15,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:06:15,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:06:15,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:06:15,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:06:15,388 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:06:15,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-21 19:06:15,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82584f48/2e3803c3ef6244beaee4cd274a5872f1/FLAG41217dd82 [2020-08-21 19:06:15,955 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:06:15,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-21 19:06:15,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82584f48/2e3803c3ef6244beaee4cd274a5872f1/FLAG41217dd82 [2020-08-21 19:06:16,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82584f48/2e3803c3ef6244beaee4cd274a5872f1 [2020-08-21 19:06:16,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:06:16,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:06:16,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:06:16,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:06:16,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:06:16,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ab055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16, skipping insertion in model container [2020-08-21 19:06:16,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:06:16,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:06:16,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:06:16,612 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:06:16,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:06:16,815 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:06:16,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16 WrapperNode [2020-08-21 19:06:16,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:06:16,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:06:16,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:06:16,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:06:16,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... [2020-08-21 19:06:16,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:06:16,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:06:16,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:06:16,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:06:16,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:06:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:06:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:06:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 19:06:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 19:06:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 19:06:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 19:06:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 19:06:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 19:06:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 19:06:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 19:06:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 19:06:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 19:06:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 19:06:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 19:06:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 19:06:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 19:06:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 19:06:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 19:06:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 19:06:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 19:06:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:06:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:06:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 19:06:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 19:06:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 19:06:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 19:06:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:06:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 19:06:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 19:06:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 19:06:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 19:06:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 19:06:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 19:06:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 19:06:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 19:06:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 19:06:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 19:06:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 19:06:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 19:06:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 19:06:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 19:06:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:06:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:06:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:06:17,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:06:17,449 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 19:06:17,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:06:17 BoogieIcfgContainer [2020-08-21 19:06:17,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:06:17,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:06:17,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:06:17,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:06:17,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:06:16" (1/3) ... [2020-08-21 19:06:17,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebece76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:06:17, skipping insertion in model container [2020-08-21 19:06:17,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:06:16" (2/3) ... [2020-08-21 19:06:17,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebece76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:06:17, skipping insertion in model container [2020-08-21 19:06:17,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:06:17" (3/3) ... [2020-08-21 19:06:17,462 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-21 19:06:17,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:06:17,479 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:06:17,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:06:17,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:06:17,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:06:17,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:06:17,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:06:17,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:06:17,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:06:17,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:06:17,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:06:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-21 19:06:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:17,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:17,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:17,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:17,561 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-21 19:06:17,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:17,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038645928] [2020-08-21 19:06:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:17,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:18,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038645928] [2020-08-21 19:06:18,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:18,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:06:18,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741115890] [2020-08-21 19:06:18,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:06:18,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:18,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:06:18,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:06:18,117 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-21 19:06:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:20,338 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-21 19:06:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:06:20,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-21 19:06:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:20,359 INFO L225 Difference]: With dead ends: 501 [2020-08-21 19:06:20,359 INFO L226 Difference]: Without dead ends: 357 [2020-08-21 19:06:20,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:06:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-21 19:06:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-21 19:06:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 19:06:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-21 19:06:20,458 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-21 19:06:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:20,459 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-21 19:06:20,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:06:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-21 19:06:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:20,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:20,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:20,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:06:20,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-21 19:06:20,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:20,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185618757] [2020-08-21 19:06:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:20,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185618757] [2020-08-21 19:06:20,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:20,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:20,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545417949] [2020-08-21 19:06:20,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:20,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:20,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:20,703 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-21 19:06:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:21,946 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-21 19:06:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:06:21,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 19:06:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:21,960 INFO L225 Difference]: With dead ends: 573 [2020-08-21 19:06:21,960 INFO L226 Difference]: Without dead ends: 348 [2020-08-21 19:06:21,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:06:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-21 19:06:22,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-21 19:06:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 19:06:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-21 19:06:22,046 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-21 19:06:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:22,047 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-21 19:06:22,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-21 19:06:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:22,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:22,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:22,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:06:22,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-21 19:06:22,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:22,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051132128] [2020-08-21 19:06:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:22,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051132128] [2020-08-21 19:06:22,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:22,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:22,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476598979] [2020-08-21 19:06:22,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:22,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:22,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:22,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:22,321 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-21 19:06:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:23,884 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-21 19:06:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:06:23,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 19:06:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:23,889 INFO L225 Difference]: With dead ends: 696 [2020-08-21 19:06:23,890 INFO L226 Difference]: Without dead ends: 471 [2020-08-21 19:06:23,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-21 19:06:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-21 19:06:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-21 19:06:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-21 19:06:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-21 19:06:23,935 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-21 19:06:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:23,936 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-21 19:06:23,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-21 19:06:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:23,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:23,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:23,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:06:23,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:23,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:23,939 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-21 19:06:23,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:23,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846062774] [2020-08-21 19:06:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:23,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:24,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846062774] [2020-08-21 19:06:24,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:24,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:24,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548120443] [2020-08-21 19:06:24,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:24,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:24,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:24,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:24,150 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-21 19:06:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:25,493 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-21 19:06:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:06:25,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 19:06:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:25,499 INFO L225 Difference]: With dead ends: 718 [2020-08-21 19:06:25,499 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 19:06:25,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:06:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 19:06:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-21 19:06:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-21 19:06:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-21 19:06:25,536 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-21 19:06:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:25,537 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-21 19:06:25,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-21 19:06:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:25,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:25,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:25,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:06:25,539 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:25,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:25,540 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-21 19:06:25,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:25,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254396103] [2020-08-21 19:06:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:25,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254396103] [2020-08-21 19:06:25,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:25,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:25,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473280719] [2020-08-21 19:06:25,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:25,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:25,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:25,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:25,725 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-21 19:06:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:26,933 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-21 19:06:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:06:26,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 19:06:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:26,937 INFO L225 Difference]: With dead ends: 748 [2020-08-21 19:06:26,937 INFO L226 Difference]: Without dead ends: 452 [2020-08-21 19:06:26,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:06:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-21 19:06:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-21 19:06:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-21 19:06:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-21 19:06:26,972 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-21 19:06:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:26,973 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-21 19:06:26,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-21 19:06:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:26,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:26,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:26,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:06:26,975 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-21 19:06:26,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:26,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857261039] [2020-08-21 19:06:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:27,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857261039] [2020-08-21 19:06:27,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:27,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:06:27,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5619652] [2020-08-21 19:06:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:27,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:27,131 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-21 19:06:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:28,568 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-21 19:06:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 19:06:28,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-21 19:06:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:28,573 INFO L225 Difference]: With dead ends: 894 [2020-08-21 19:06:28,573 INFO L226 Difference]: Without dead ends: 587 [2020-08-21 19:06:28,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-21 19:06:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-21 19:06:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-21 19:06:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-21 19:06:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-21 19:06:28,614 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-21 19:06:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:28,615 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-21 19:06:28,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-21 19:06:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:06:28,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:28,616 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] [2020-08-21 19:06:28,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:06:28,617 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-21 19:06:28,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:28,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710135929] [2020-08-21 19:06:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:06:28,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710135929] [2020-08-21 19:06:28,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:28,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:06:28,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75972405] [2020-08-21 19:06:28,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:06:28,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:06:28,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:06:28,777 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-21 19:06:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:30,066 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-21 19:06:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:06:30,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 19:06:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:30,075 INFO L225 Difference]: With dead ends: 1180 [2020-08-21 19:06:30,075 INFO L226 Difference]: Without dead ends: 838 [2020-08-21 19:06:30,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:06:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-21 19:06:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-21 19:06:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-21 19:06:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-21 19:06:30,167 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-21 19:06:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:30,168 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-21 19:06:30,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:06:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-21 19:06:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 19:06:30,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:30,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:30,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:06:30,173 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-21 19:06:30,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:30,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331444136] [2020-08-21 19:06:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 19:06:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 19:06:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 19:06:30,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331444136] [2020-08-21 19:06:30,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:30,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 19:06:30,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389194885] [2020-08-21 19:06:30,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:06:30,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:30,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:06:30,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:06:30,458 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-21 19:06:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:32,061 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-21 19:06:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:06:32,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-21 19:06:32,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:32,072 INFO L225 Difference]: With dead ends: 2077 [2020-08-21 19:06:32,073 INFO L226 Difference]: Without dead ends: 1361 [2020-08-21 19:06:32,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-21 19:06:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-21 19:06:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-21 19:06:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-21 19:06:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-21 19:06:32,192 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-21 19:06:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:32,192 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-21 19:06:32,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:06:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-21 19:06:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 19:06:32,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:32,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:32,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:06:32,195 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-21 19:06:32,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:32,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757183081] [2020-08-21 19:06:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 19:06:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 19:06:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 19:06:32,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757183081] [2020-08-21 19:06:32,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:06:32,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:06:32,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213032470] [2020-08-21 19:06:32,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:06:32,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:32,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:06:32,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:06:32,502 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-21 19:06:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:34,247 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-21 19:06:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 19:06:34,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-21 19:06:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:34,257 INFO L225 Difference]: With dead ends: 3315 [2020-08-21 19:06:34,257 INFO L226 Difference]: Without dead ends: 1560 [2020-08-21 19:06:34,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-21 19:06:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-21 19:06:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-21 19:06:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-21 19:06:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-21 19:06:34,390 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-21 19:06:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:34,392 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-21 19:06:34,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:06:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-21 19:06:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 19:06:34,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:34,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:34,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:06:34,400 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-21 19:06:34,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:34,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784582345] [2020-08-21 19:06:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 19:06:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 19:06:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:06:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 19:06:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 19:06:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-21 19:06:34,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784582345] [2020-08-21 19:06:34,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:34,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 19:06:34,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549081454] [2020-08-21 19:06:34,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:06:34,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:06:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:06:34,611 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-21 19:06:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:35,948 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-21 19:06:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:06:35,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-21 19:06:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:35,958 INFO L225 Difference]: With dead ends: 3041 [2020-08-21 19:06:35,958 INFO L226 Difference]: Without dead ends: 1568 [2020-08-21 19:06:35,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:06:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-21 19:06:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-21 19:06:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-21 19:06:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-21 19:06:36,090 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-21 19:06:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:36,091 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-21 19:06:36,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:06:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-21 19:06:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-21 19:06:36,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:36,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:36,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:06:36,098 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:36,098 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-21 19:06:36,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:36,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839494351] [2020-08-21 19:06:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 19:06:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 19:06:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 19:06:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 19:06:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 19:06:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-21 19:06:36,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839494351] [2020-08-21 19:06:36,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:36,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:06:36,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38408463] [2020-08-21 19:06:36,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:06:36,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:36,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:06:36,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:06:36,437 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-21 19:06:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:38,059 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-21 19:06:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 19:06:38,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-21 19:06:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:38,066 INFO L225 Difference]: With dead ends: 3478 [2020-08-21 19:06:38,066 INFO L226 Difference]: Without dead ends: 1006 [2020-08-21 19:06:38,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-21 19:06:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-21 19:06:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-21 19:06:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-21 19:06:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-21 19:06:38,147 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-21 19:06:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:38,148 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-21 19:06:38,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:06:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-21 19:06:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-21 19:06:38,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:06:38,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:06:38,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:06:38,152 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:06:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:06:38,152 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-21 19:06:38,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:06:38,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360414900] [2020-08-21 19:06:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:06:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:06:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:06:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:06:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 19:06:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 19:06:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:06:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:06:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 19:06:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:06:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 19:06:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 19:06:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 19:06:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:06:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:06:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:06:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 19:06:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:06:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-21 19:06:38,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360414900] [2020-08-21 19:06:38,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:06:38,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:06:38,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664263978] [2020-08-21 19:06:38,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:06:38,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:06:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:06:38,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:06:38,475 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-21 19:06:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:06:40,774 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-21 19:06:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 19:06:40,775 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-21 19:06:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:06:40,776 INFO L225 Difference]: With dead ends: 1204 [2020-08-21 19:06:40,776 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:06:40,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-21 19:06:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:06:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:06:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:06:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:06:40,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-21 19:06:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:06:40,781 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:06:40,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:06:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:06:40,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:06:40,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:06:40,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:06:41,492 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 19:06:41,781 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 19:06:42,012 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 19:06:42,189 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 19:06:42,351 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-21 19:06:51,846 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-21 19:06:53,113 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-21 19:06:53,526 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-21 19:06:54,189 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:06:54,858 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:06:55,015 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-21 19:06:55,651 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:06:56,292 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:06:56,420 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-21 19:06:57,046 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:06:57,955 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-21 19:06:58,795 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-21 19:07:00,202 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-21 19:07:00,618 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-21 19:07:01,569 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-21 19:07:02,625 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-21 19:07:03,650 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-21 19:07:04,264 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:07:04,523 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-21 19:07:06,667 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-21 19:07:07,451 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-21 19:07:07,751 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-21 19:07:10,017 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-21 19:07:10,345 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-21 19:07:10,984 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-21 19:07:13,261 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-21 19:07:13,371 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-21 19:07:13,485 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-21 19:07:13,771 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-08-21 19:07:14,688 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-21 19:07:15,210 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60