/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:14:07,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:14:07,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:14:07,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:14:07,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:14:07,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:14:07,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:14:07,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:14:07,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:14:07,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:14:07,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:14:07,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:14:07,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:14:07,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:14:07,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:14:07,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:14:07,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:14:07,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:14:07,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:14:07,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:14:07,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:14:07,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:14:07,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:14:07,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:14:07,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:14:07,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:14:07,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:14:07,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:14:07,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:14:07,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:14:07,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:14:07,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:14:07,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:14:07,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:14:07,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:14:07,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:14:07,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:14:07,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:14:07,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:14:07,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:14:07,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:14:07,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:14:07,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:14:07,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:14:07,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:14:07,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:14:07,963 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:14:07,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:14:07,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:14:07,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:14:07,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:14:07,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:14:07,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:14:07,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:14:07,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:14:07,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:14:07,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:14:07,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:14:07,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:14:07,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:14:07,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:14:07,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:14:07,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:14:07,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:14:07,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:14:07,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:14:07,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:14:07,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:14:07,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:14:07,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:14:07,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:14:07,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:14:08,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:14:08,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:14:08,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:14:08,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:14:08,286 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:14:08,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-18 17:14:08,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72673308/312bb4fdecdb4e1ba8c57ffee0353384/FLAG808b9782c [2020-08-18 17:14:08,848 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:14:08,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-18 17:14:08,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72673308/312bb4fdecdb4e1ba8c57ffee0353384/FLAG808b9782c [2020-08-18 17:14:09,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72673308/312bb4fdecdb4e1ba8c57ffee0353384 [2020-08-18 17:14:09,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:14:09,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:14:09,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:14:09,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:14:09,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:14:09,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6474c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09, skipping insertion in model container [2020-08-18 17:14:09,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:14:09,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:14:09,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:14:09,481 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:14:09,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:14:09,634 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:14:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09 WrapperNode [2020-08-18 17:14:09,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:14:09,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:14:09,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:14:09,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:14:09,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... [2020-08-18 17:14:09,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:14:09,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:14:09,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:14:09,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:14:09,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:14:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:14:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:14:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 17:14:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 17:14:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 17:14:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 17:14:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 17:14:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 17:14:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 17:14:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 17:14:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 17:14:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 17:14:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 17:14:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 17:14:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 17:14:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 17:14:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 17:14:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 17:14:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 17:14:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 17:14:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:14:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:14:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 17:14:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 17:14:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 17:14:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 17:14:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 17:14:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 17:14:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 17:14:09,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:14:09,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:14:09,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:14:10,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:14:10,242 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 17:14:10,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:14:10 BoogieIcfgContainer [2020-08-18 17:14:10,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:14:10,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:14:10,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:14:10,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:14:10,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:14:09" (1/3) ... [2020-08-18 17:14:10,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af2cfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:14:10, skipping insertion in model container [2020-08-18 17:14:10,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:09" (2/3) ... [2020-08-18 17:14:10,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af2cfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:14:10, skipping insertion in model container [2020-08-18 17:14:10,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:14:10" (3/3) ... [2020-08-18 17:14:10,257 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-18 17:14:10,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:14:10,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:14:10,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:14:10,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:14:10,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:14:10,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:14:10,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:14:10,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:14:10,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:14:10,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:14:10,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:14:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-18 17:14:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:10,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:10,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:10,352 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:10,358 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-18 17:14:10,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:10,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027391056] [2020-08-18 17:14:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:10,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027391056] [2020-08-18 17:14:10,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:10,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:14:10,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163436218] [2020-08-18 17:14:10,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:14:10,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:14:10,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:14:10,924 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-18 17:14:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:13,079 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-18 17:14:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:14:13,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-18 17:14:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:13,100 INFO L225 Difference]: With dead ends: 501 [2020-08-18 17:14:13,100 INFO L226 Difference]: Without dead ends: 357 [2020-08-18 17:14:13,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:14:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-18 17:14:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-18 17:14:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 17:14:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-18 17:14:13,220 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-18 17:14:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:13,221 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-18 17:14:13,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:14:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-18 17:14:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:13,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:13,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:13,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:14:13,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:13,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-18 17:14:13,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:13,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149985174] [2020-08-18 17:14:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:13,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149985174] [2020-08-18 17:14:13,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:13,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:14:13,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398101826] [2020-08-18 17:14:13,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:14:13,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:13,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:14:13,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:14:13,420 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-18 17:14:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:14,545 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-18 17:14:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:14:14,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 17:14:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:14,557 INFO L225 Difference]: With dead ends: 573 [2020-08-18 17:14:14,558 INFO L226 Difference]: Without dead ends: 348 [2020-08-18 17:14:14,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:14:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-18 17:14:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-18 17:14:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 17:14:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-18 17:14:14,657 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-18 17:14:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:14,657 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-18 17:14:14,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:14:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-18 17:14:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:14,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:14,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:14,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:14:14,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-18 17:14:14,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:14,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046646164] [2020-08-18 17:14:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:14,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046646164] [2020-08-18 17:14:14,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:14,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:14:14,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089148476] [2020-08-18 17:14:14,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:14:14,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:14:14,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:14:14,880 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-18 17:14:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:16,325 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-18 17:14:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 17:14:16,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 17:14:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:16,329 INFO L225 Difference]: With dead ends: 696 [2020-08-18 17:14:16,330 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 17:14:16,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-18 17:14:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 17:14:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-18 17:14:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-18 17:14:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-18 17:14:16,373 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-18 17:14:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:16,373 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-18 17:14:16,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:14:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-18 17:14:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:16,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:16,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:16,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:14:16,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:16,376 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-18 17:14:16,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:16,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369141356] [2020-08-18 17:14:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:16,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369141356] [2020-08-18 17:14:16,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:16,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:14:16,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881765379] [2020-08-18 17:14:16,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:14:16,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:16,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:14:16,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:14:16,563 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-18 17:14:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:17,915 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-18 17:14:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:14:17,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 17:14:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:17,920 INFO L225 Difference]: With dead ends: 718 [2020-08-18 17:14:17,920 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 17:14:17,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:14:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 17:14:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-18 17:14:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 17:14:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-18 17:14:17,956 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-18 17:14:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:17,957 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-18 17:14:17,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:14:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-18 17:14:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:17,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:17,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:17,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:14:17,959 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:17,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-18 17:14:17,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:17,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367039424] [2020-08-18 17:14:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:18,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367039424] [2020-08-18 17:14:18,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:18,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:14:18,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499089952] [2020-08-18 17:14:18,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:14:18,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:18,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:14:18,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:14:18,126 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-18 17:14:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:19,328 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-18 17:14:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:14:19,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 17:14:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:19,333 INFO L225 Difference]: With dead ends: 748 [2020-08-18 17:14:19,333 INFO L226 Difference]: Without dead ends: 452 [2020-08-18 17:14:19,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:14:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-18 17:14:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-18 17:14:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-18 17:14:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-18 17:14:19,383 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-18 17:14:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:19,384 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-18 17:14:19,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:14:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-18 17:14:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:19,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:19,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:19,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:14:19,390 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:19,390 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-18 17:14:19,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:19,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082867873] [2020-08-18 17:14:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:19,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082867873] [2020-08-18 17:14:19,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:19,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:14:19,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995470539] [2020-08-18 17:14:19,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:14:19,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:19,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:14:19,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:14:19,570 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-18 17:14:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:20,938 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-18 17:14:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 17:14:20,939 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-18 17:14:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:20,945 INFO L225 Difference]: With dead ends: 894 [2020-08-18 17:14:20,945 INFO L226 Difference]: Without dead ends: 587 [2020-08-18 17:14:20,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:14:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-18 17:14:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-18 17:14:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 17:14:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-18 17:14:20,983 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-18 17:14:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:20,983 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-18 17:14:20,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:14:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-18 17:14:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:14:20,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:20,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:20,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:14:20,985 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:20,986 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-18 17:14:20,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:20,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663684421] [2020-08-18 17:14:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:14:21,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663684421] [2020-08-18 17:14:21,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:21,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:14:21,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851773640] [2020-08-18 17:14:21,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:14:21,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:21,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:14:21,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:14:21,115 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-18 17:14:22,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:22,291 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-18 17:14:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:14:22,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 17:14:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:22,298 INFO L225 Difference]: With dead ends: 1180 [2020-08-18 17:14:22,298 INFO L226 Difference]: Without dead ends: 838 [2020-08-18 17:14:22,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:14:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-18 17:14:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-18 17:14:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-18 17:14:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-18 17:14:22,382 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-18 17:14:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:22,382 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-18 17:14:22,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:14:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-18 17:14:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 17:14:22,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:22,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:22,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:14:22,385 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:22,386 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-18 17:14:22,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:22,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113670936] [2020-08-18 17:14:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 17:14:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 17:14:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-18 17:14:22,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113670936] [2020-08-18 17:14:22,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:14:22,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:14:22,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669701637] [2020-08-18 17:14:22,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:14:22,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:22,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:14:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:14:22,577 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-18 17:14:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:24,321 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-18 17:14:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:14:24,322 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-18 17:14:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:24,330 INFO L225 Difference]: With dead ends: 2077 [2020-08-18 17:14:24,330 INFO L226 Difference]: Without dead ends: 1361 [2020-08-18 17:14:24,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-18 17:14:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-18 17:14:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-18 17:14:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-18 17:14:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-18 17:14:24,458 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-18 17:14:24,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:24,459 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-18 17:14:24,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:14:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-18 17:14:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 17:14:24,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:24,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:24,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:14:24,463 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:24,464 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-18 17:14:24,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:24,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222109400] [2020-08-18 17:14:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 17:14:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 17:14:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 17:14:24,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222109400] [2020-08-18 17:14:24,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:24,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:14:24,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084931832] [2020-08-18 17:14:24,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:14:24,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:24,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:14:24,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:14:24,670 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-18 17:14:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:26,317 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-18 17:14:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 17:14:26,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-18 17:14:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:26,327 INFO L225 Difference]: With dead ends: 3315 [2020-08-18 17:14:26,327 INFO L226 Difference]: Without dead ends: 1560 [2020-08-18 17:14:26,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:14:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-18 17:14:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-18 17:14:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-18 17:14:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-18 17:14:26,480 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-18 17:14:26,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:26,482 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-18 17:14:26,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:14:26,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-18 17:14:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-18 17:14:26,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:26,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:26,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:14:26,490 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-18 17:14:26,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:26,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019523492] [2020-08-18 17:14:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 17:14:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 17:14:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 17:14:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 17:14:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 17:14:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-18 17:14:26,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019523492] [2020-08-18 17:14:26,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:14:26,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:14:26,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796108314] [2020-08-18 17:14:26,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:14:26,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:26,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:14:26,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:14:26,711 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-18 17:14:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:28,112 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-18 17:14:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 17:14:28,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-18 17:14:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:28,124 INFO L225 Difference]: With dead ends: 3041 [2020-08-18 17:14:28,124 INFO L226 Difference]: Without dead ends: 1568 [2020-08-18 17:14:28,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:14:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-18 17:14:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-18 17:14:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-18 17:14:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-18 17:14:28,254 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-18 17:14:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:28,254 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-18 17:14:28,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:14:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-18 17:14:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 17:14:28,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:28,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:28,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:14:28,261 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:28,261 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-18 17:14:28,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:28,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099810625] [2020-08-18 17:14:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 17:14:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 17:14:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 17:14:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 17:14:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 17:14:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-18 17:14:28,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099810625] [2020-08-18 17:14:28,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:14:28,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:14:28,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236450846] [2020-08-18 17:14:28,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:14:28,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:14:28,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:14:28,526 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-18 17:14:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:30,157 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-18 17:14:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 17:14:30,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-18 17:14:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:30,165 INFO L225 Difference]: With dead ends: 3478 [2020-08-18 17:14:30,165 INFO L226 Difference]: Without dead ends: 1006 [2020-08-18 17:14:30,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-18 17:14:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-18 17:14:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-18 17:14:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-18 17:14:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-18 17:14:30,284 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-18 17:14:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:30,285 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-18 17:14:30,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:14:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-18 17:14:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 17:14:30,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:30,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:30,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:14:30,292 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:30,292 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-18 17:14:30,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:30,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913779486] [2020-08-18 17:14:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:14:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:14:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:14:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 17:14:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:14:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:14:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:14:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 17:14:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 17:14:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 17:14:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 17:14:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 17:14:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:14:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:14:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 17:14:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-18 17:14:30,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913779486] [2020-08-18 17:14:30,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:14:30,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:14:30,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999088046] [2020-08-18 17:14:30,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:14:30,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:30,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:14:30,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:14:30,672 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-18 17:14:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:32,778 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-18 17:14:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 17:14:32,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-18 17:14:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:32,780 INFO L225 Difference]: With dead ends: 1204 [2020-08-18 17:14:32,780 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:14:32,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-18 17:14:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:14:32,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:14:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:14:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:14:32,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-18 17:14:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:32,784 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:14:32,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:14:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:14:32,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:14:32,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:14:32,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 17:14:33,495 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 17:14:33,743 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 17:14:34,141 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 17:14:34,444 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 17:14:34,664 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-18 17:14:35,853 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-08-18 17:14:44,405 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-18 17:14:45,642 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-18 17:14:46,023 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-18 17:14:46,638 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:14:47,280 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:14:47,438 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-18 17:14:48,071 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:14:48,733 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:14:48,880 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-18 17:14:49,527 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:14:50,461 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-18 17:14:51,338 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-18 17:14:52,772 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-18 17:14:53,191 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-18 17:14:54,160 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-18 17:14:55,211 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-18 17:14:56,330 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-18 17:14:56,987 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:14:57,279 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-18 17:14:59,591 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 17:15:00,425 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-18 17:15:00,739 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 17:15:03,038 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 17:15:03,388 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-18 17:15:04,027 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-18 17:15:06,299 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-18 17:15:06,407 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-18 17:15:06,517 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 17:15:06,806 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-08-18 17:15:07,707 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-18 17:15:08,238 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-08-18 17:15:08,723 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-08-18 17:15:09,132 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-18 17:15:09,495 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50