/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:52:42,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:52:42,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:52:42,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:52:42,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:52:42,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:52:42,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:52:42,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:52:42,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:52:42,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:52:42,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:52:42,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:52:42,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:52:42,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:52:42,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:52:42,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:52:42,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:52:42,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:52:42,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:52:42,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:52:42,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:52:42,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:52:42,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:52:42,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:52:42,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:52:42,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:52:42,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:52:42,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:52:42,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:52:42,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:52:42,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:52:42,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:52:42,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:52:42,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:52:42,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:52:42,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:52:42,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:52:42,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:52:42,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:52:42,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:52:42,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:52:42,746 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 22:52:42,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:52:42,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:52:42,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:52:42,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:52:42,795 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:52:42,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:52:42,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:52:42,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:52:42,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:52:42,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:52:42,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:52:42,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:52:42,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:52:42,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:52:42,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:52:42,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:52:42,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:52:42,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:52:42,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:52:42,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:52:42,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:52:42,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:52:42,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:52:42,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:52:42,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:52:42,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:52:42,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:52:42,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:52:42,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:52:42,802 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:52:43,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:52:43,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:52:43,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:52:43,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:52:43,106 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:52:43,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-18 22:52:43,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dca52d6bd/4537966f80c34d2f948215488ce6930d/FLAG5baed01d6 [2020-08-18 22:52:43,766 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:52:43,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-18 22:52:43,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dca52d6bd/4537966f80c34d2f948215488ce6930d/FLAG5baed01d6 [2020-08-18 22:52:44,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dca52d6bd/4537966f80c34d2f948215488ce6930d [2020-08-18 22:52:44,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:52:44,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:52:44,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:52:44,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:52:44,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:52:44,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44, skipping insertion in model container [2020-08-18 22:52:44,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:52:44,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:52:44,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:52:44,605 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:52:44,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:52:44,769 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:52:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44 WrapperNode [2020-08-18 22:52:44,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:52:44,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:52:44,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:52:44,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:52:44,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (1/1) ... [2020-08-18 22:52:44,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:52:44,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:52:44,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:52:44,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:52:44,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (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 22:52:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:52:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:52:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 22:52:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 22:52:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 22:52:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-18 22:52:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-08-18 22:52:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-08-18 22:52:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-08-18 22:52:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-08-18 22:52:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-08-18 22:52:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-08-18 22:52:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-08-18 22:52:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-08-18 22:52:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-08-18 22:52:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-08-18 22:52:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-08-18 22:52:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit14 [2020-08-18 22:52:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 22:52:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 22:52:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-18 22:52:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-08-18 22:52:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-08-18 22:52:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-08-18 22:52:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-08-18 22:52:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-08-18 22:52:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-08-18 22:52:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-08-18 22:52:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-08-18 22:52:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-08-18 22:52:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-08-18 22:52:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-08-18 22:52:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit14_triggered [2020-08-18 22:52:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 22:52:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 22:52:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 22:52:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 22:52:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 22:52:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 22:52:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 22:52:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 22:52:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 22:52:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 22:52:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 22:52:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 22:52:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 22:52:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:52:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:52:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:52:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 22:52:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 22:52:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 22:52:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-18 22:52:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-08-18 22:52:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-08-18 22:52:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-08-18 22:52:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-08-18 22:52:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-08-18 22:52:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-08-18 22:52:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-08-18 22:52:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-08-18 22:52:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-08-18 22:52:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-08-18 22:52:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-08-18 22:52:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit14_triggered [2020-08-18 22:52:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 22:52:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 22:52:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 22:52:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-18 22:52:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-08-18 22:52:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-08-18 22:52:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-08-18 22:52:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-08-18 22:52:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-08-18 22:52:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-08-18 22:52:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-08-18 22:52:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-08-18 22:52:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-08-18 22:52:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-08-18 22:52:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-08-18 22:52:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure transmit14 [2020-08-18 22:52:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 22:52:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 22:52:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 22:52:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 22:52:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 22:52:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 22:52:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 22:52:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 22:52:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 22:52:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 22:52:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 22:52:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 22:52:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:52:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:52:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:52:46,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:52:46,356 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-18 22:52:46,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:52:46 BoogieIcfgContainer [2020-08-18 22:52:46,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:52:46,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:52:46,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:52:46,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:52:46,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:52:44" (1/3) ... [2020-08-18 22:52:46,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626dcba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:52:46, skipping insertion in model container [2020-08-18 22:52:46,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:52:44" (2/3) ... [2020-08-18 22:52:46,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626dcba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:52:46, skipping insertion in model container [2020-08-18 22:52:46,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:52:46" (3/3) ... [2020-08-18 22:52:46,375 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2020-08-18 22:52:46,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:52:46,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:52:46,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:52:46,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:52:46,441 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:52:46,441 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:52:46,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:52:46,442 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:52:46,442 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:52:46,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:52:46,442 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:52:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states. [2020-08-18 22:52:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 22:52:46,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:52:46,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:46,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:52:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:52:46,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1383974208, now seen corresponding path program 1 times [2020-08-18 22:52:46,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:52:46,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761546494] [2020-08-18 22:52:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:52:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,529 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 22:52:47,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:52:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:52:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:52:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:52:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:52:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:52:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:52:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:52:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:52:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:52:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:52:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:52:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:52:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:52:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:47,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:52:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:52:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 22:52:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:52:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:52:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:52:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:52:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 22:52:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 22:52:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:52:48,190 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 22:52:48,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761546494] [2020-08-18 22:52:48,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:52:48,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:52:48,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403186987] [2020-08-18 22:52:48,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:52:48,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:52:48,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:52:48,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:52:48,237 INFO L87 Difference]: Start difference. First operand 526 states. Second operand 12 states. [2020-08-18 22:52:48,595 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 22:52:48,741 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:52:49,101 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 22:52:49,292 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:52:51,753 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 22:52:52,090 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-18 22:52:52,459 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 22:52:52,629 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 22:52:52,944 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 22:52:53,098 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 22:53:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:01,810 INFO L93 Difference]: Finished difference Result 1409 states and 2346 transitions. [2020-08-18 22:53:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 22:53:01,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-18 22:53:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:01,841 INFO L225 Difference]: With dead ends: 1409 [2020-08-18 22:53:01,842 INFO L226 Difference]: Without dead ends: 887 [2020-08-18 22:53:01,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-18 22:53:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-08-18 22:53:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 522. [2020-08-18 22:53:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-08-18 22:53:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 765 transitions. [2020-08-18 22:53:02,077 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 765 transitions. Word has length 254 [2020-08-18 22:53:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:02,078 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 765 transitions. [2020-08-18 22:53:02,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:53:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 765 transitions. [2020-08-18 22:53:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 22:53:02,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:02,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:02,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:53:02,084 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:02,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1062988672, now seen corresponding path program 1 times [2020-08-18 22:53:02,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:02,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060731215] [2020-08-18 22:53:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,491 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 22:53:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:53:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:53:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:53:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:53:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:53:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:53:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:53:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:53:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 22:53:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:53:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:53:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:53:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:53:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 22:53:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 22:53:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:02,926 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 22:53:02,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060731215] [2020-08-18 22:53:02,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:02,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:53:02,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733280618] [2020-08-18 22:53:02,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:53:02,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:02,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:53:02,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:53:02,931 INFO L87 Difference]: Start difference. First operand 522 states and 765 transitions. Second operand 12 states. [2020-08-18 22:53:03,254 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 22:53:03,401 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:53:03,752 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 22:53:03,976 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:53:06,419 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 22:53:06,740 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-18 22:53:06,924 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 22:53:07,249 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 22:53:07,419 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 22:53:07,719 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 22:53:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:15,396 INFO L93 Difference]: Finished difference Result 1386 states and 2171 transitions. [2020-08-18 22:53:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:53:15,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-18 22:53:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:15,407 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 22:53:15,407 INFO L226 Difference]: Without dead ends: 888 [2020-08-18 22:53:15,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-08-18 22:53:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-08-18 22:53:15,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 527. [2020-08-18 22:53:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-18 22:53:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 769 transitions. [2020-08-18 22:53:15,529 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 769 transitions. Word has length 254 [2020-08-18 22:53:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:15,529 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 769 transitions. [2020-08-18 22:53:15,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:53:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 769 transitions. [2020-08-18 22:53:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 22:53:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:15,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:15,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:53:15,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash 458447040, now seen corresponding path program 1 times [2020-08-18 22:53:15,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:15,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645296322] [2020-08-18 22:53:15,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:15,935 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 22:53:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:53:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:53:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:53:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:53:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:53:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:53:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:53:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:53:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 22:53:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:53:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:53:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:53:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:53:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 22:53:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 22:53:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:16,436 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 22:53:16,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645296322] [2020-08-18 22:53:16,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:16,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:53:16,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507911475] [2020-08-18 22:53:16,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:53:16,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:16,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:53:16,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:53:16,440 INFO L87 Difference]: Start difference. First operand 527 states and 769 transitions. Second operand 9 states. [2020-08-18 22:53:16,730 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 22:53:16,867 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:53:17,068 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:53:24,548 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 22:53:24,735 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:53:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:30,177 INFO L93 Difference]: Finished difference Result 2134 states and 3311 transitions. [2020-08-18 22:53:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:53:30,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2020-08-18 22:53:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:30,189 INFO L225 Difference]: With dead ends: 2134 [2020-08-18 22:53:30,190 INFO L226 Difference]: Without dead ends: 1639 [2020-08-18 22:53:30,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:53:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-08-18 22:53:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1040. [2020-08-18 22:53:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-18 22:53:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1532 transitions. [2020-08-18 22:53:30,371 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1532 transitions. Word has length 254 [2020-08-18 22:53:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:30,372 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1532 transitions. [2020-08-18 22:53:30,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:53:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1532 transitions. [2020-08-18 22:53:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 22:53:30,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:30,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:30,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:53:30,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1062661057, now seen corresponding path program 1 times [2020-08-18 22:53:30,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:30,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114434529] [2020-08-18 22:53:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:30,787 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 22:53:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:53:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:53:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:53:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:53:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:53:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:53:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:53:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:53:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 22:53:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:53:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:53:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:53:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:53:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 22:53:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 22:53:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:31,402 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 22:53:31,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114434529] [2020-08-18 22:53:31,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:31,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:53:31,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796859647] [2020-08-18 22:53:31,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:53:31,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:53:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:53:31,406 INFO L87 Difference]: Start difference. First operand 1040 states and 1532 transitions. Second operand 10 states. [2020-08-18 22:53:31,841 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 22:53:32,042 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:53:32,258 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:53:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:53:40,274 INFO L93 Difference]: Finished difference Result 2636 states and 4012 transitions. [2020-08-18 22:53:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:53:40,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2020-08-18 22:53:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:53:40,286 INFO L225 Difference]: With dead ends: 2636 [2020-08-18 22:53:40,286 INFO L226 Difference]: Without dead ends: 1628 [2020-08-18 22:53:40,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:53:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-08-18 22:53:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1040. [2020-08-18 22:53:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-18 22:53:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1525 transitions. [2020-08-18 22:53:40,484 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1525 transitions. Word has length 254 [2020-08-18 22:53:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:53:40,485 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1525 transitions. [2020-08-18 22:53:40,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:53:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1525 transitions. [2020-08-18 22:53:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 22:53:40,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:53:40,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:40,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:53:40,490 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:53:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:53:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1143415041, now seen corresponding path program 1 times [2020-08-18 22:53:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:53:40,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310835807] [2020-08-18 22:53:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:53:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:40,910 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 22:53:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:53:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:53:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:53:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:53:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:53:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:53:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:53:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:53:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:53:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:53:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:53:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:53:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:53:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:53:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:53:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:53:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 22:53:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:53:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:53:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:53:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:53:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 22:53:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 22:53:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:53:41,447 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 22:53:41,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310835807] [2020-08-18 22:53:41,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:53:41,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:53:41,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891534543] [2020-08-18 22:53:41,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:53:41,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:53:41,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:53:41,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:53:41,451 INFO L87 Difference]: Start difference. First operand 1040 states and 1525 transitions. Second operand 10 states. [2020-08-18 22:53:41,781 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 22:53:41,922 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 22:53:42,121 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135