/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=BIGGEST -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 13:06:00,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:06:00,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:06:00,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:06:00,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:06:00,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:06:00,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:06:00,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:06:00,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:06:00,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:06:00,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:06:00,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:06:00,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:06:00,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:06:00,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:06:00,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:06:00,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:06:00,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:06:00,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:06:00,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:06:00,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:06:00,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:06:00,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:06:00,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:06:00,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:06:00,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:06:00,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:06:00,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:06:00,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:06:00,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 13:06:00,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 13:06:00,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 13:06:00,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 13:06:00,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 13:06:00,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 13:06:00,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 13:06:00,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 13:06:00,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 13:06:00,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:06:00,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:06:00,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:06:00,968 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 13:06:00,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:06:00,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:06:01,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:06:01,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:06:01,000 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:06:01,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:06:01,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 13:06:01,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:06:01,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 13:06:01,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:06:01,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:06:01,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:06:01,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:06:01,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 13:06:01,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:06:01,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:06:01,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:06:01,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:06:01,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:06:01,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:06:01,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:06:01,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:06:01,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:06:01,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:06:01,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:06:01,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:06:01,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:06:01,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:06:01,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:06:01,012 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:06:01,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:06:01,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:06:01,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:06:01,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:06:01,318 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:06:01,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-18 13:06:01,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302f9ffd3/b1cc934a30ca47c68173cfc586c947e9/FLAGfbe5469ad [2020-08-18 13:06:01,923 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:06:01,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-18 13:06:01,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302f9ffd3/b1cc934a30ca47c68173cfc586c947e9/FLAGfbe5469ad [2020-08-18 13:06:02,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302f9ffd3/b1cc934a30ca47c68173cfc586c947e9 [2020-08-18 13:06:02,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:06:02,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:06:02,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:02,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:06:02,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:06:02,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:02" (1/1) ... [2020-08-18 13:06:02,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:02, skipping insertion in model container [2020-08-18 13:06:02,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:02" (1/1) ... [2020-08-18 13:06:02,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:06:02,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:06:02,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:06:02,805 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:06:02,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:06:03,010 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:06:03,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03 WrapperNode [2020-08-18 13:06:03,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:03,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:06:03,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:06:03,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:06:03,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (1/1) ... [2020-08-18 13:06:03,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:06:03,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:06:03,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:06:03,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:06:03,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (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 13:06:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:06:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:06:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 13:06:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 13:06:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-08-18 13:06:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-08-18 13:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-08-18 13:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-08-18 13:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-08-18 13:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-08-18 13:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-08-18 13:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit14 [2020-08-18 13:06:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 13:06:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 13:06:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-18 13:06:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-08-18 13:06:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-08-18 13:06:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-08-18 13:06:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-08-18 13:06:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-08-18 13:06:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit14_triggered [2020-08-18 13:06:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 13:06:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 13:06:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 13:06:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 13:06:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 13:06:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 13:06:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 13:06:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 13:06:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 13:06:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 13:06:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 13:06:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 13:06:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 13:06:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:06:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:06:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 13:06:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 13:06:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 13:06:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 13:06:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-18 13:06:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-08-18 13:06:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-08-18 13:06:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-08-18 13:06:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-08-18 13:06:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-08-18 13:06:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-08-18 13:06:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-08-18 13:06:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-08-18 13:06:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-08-18 13:06:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-08-18 13:06:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-08-18 13:06:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit14_triggered [2020-08-18 13:06:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 13:06:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 13:06:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 13:06:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-18 13:06:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-08-18 13:06:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-08-18 13:06:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-08-18 13:06:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-08-18 13:06:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-08-18 13:06:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-08-18 13:06:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-08-18 13:06:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-08-18 13:06:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-08-18 13:06:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-08-18 13:06:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-08-18 13:06:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure transmit14 [2020-08-18 13:06:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 13:06:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 13:06:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 13:06:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 13:06:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 13:06:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:06:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:06:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:06:04,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:06:04,421 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-18 13:06:04,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:06:04 BoogieIcfgContainer [2020-08-18 13:06:04,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:06:04,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:06:04,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:06:04,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:06:04,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:06:02" (1/3) ... [2020-08-18 13:06:04,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b1eb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:06:04, skipping insertion in model container [2020-08-18 13:06:04,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:03" (2/3) ... [2020-08-18 13:06:04,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b1eb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:06:04, skipping insertion in model container [2020-08-18 13:06:04,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:06:04" (3/3) ... [2020-08-18 13:06:04,438 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2020-08-18 13:06:04,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:06:04,457 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:06:04,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:06:04,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:06:04,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:06:04,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:06:04,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:06:04,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:06:04,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:06:04,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:06:04,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:06:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states. [2020-08-18 13:06:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 13:06:04,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:04,571 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 13:06:04,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:04,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:04,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1383974208, now seen corresponding path program 1 times [2020-08-18 13:06:04,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:04,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082931080] [2020-08-18 13:06:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,496 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 13:06:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 13:06:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 13:06:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 13:06:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 13:06:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:06:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:06:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 13:06:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 13:06:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 13:06:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 13:06:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 13:06:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:06:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 13:06:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 13:06:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:06:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 13:06:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 13:06:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,185 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 13:06:06,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082931080] [2020-08-18 13:06:06,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:06,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 13:06:06,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208660555] [2020-08-18 13:06:06,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:06:06,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:06,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:06:06,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:06:06,217 INFO L87 Difference]: Start difference. First operand 526 states. Second operand 12 states. [2020-08-18 13:06:06,658 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 13:06:06,808 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 13:06:07,170 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 13:06:07,355 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:09,820 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 13:06:10,149 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-18 13:06:10,480 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 13:06:10,676 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 13:06:10,984 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 13:06:11,138 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 13:06:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:19,580 INFO L93 Difference]: Finished difference Result 1409 states and 2346 transitions. [2020-08-18 13:06:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 13:06:19,588 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-18 13:06:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:19,614 INFO L225 Difference]: With dead ends: 1409 [2020-08-18 13:06:19,615 INFO L226 Difference]: Without dead ends: 887 [2020-08-18 13:06:19,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-18 13:06:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-08-18 13:06:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 522. [2020-08-18 13:06:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-08-18 13:06:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 765 transitions. [2020-08-18 13:06:19,895 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 765 transitions. Word has length 254 [2020-08-18 13:06:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:19,896 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 765 transitions. [2020-08-18 13:06:19,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:06:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 765 transitions. [2020-08-18 13:06:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 13:06:19,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:19,905 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 13:06:19,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:06:19,906 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1062988672, now seen corresponding path program 1 times [2020-08-18 13:06:19,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:19,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712855317] [2020-08-18 13:06:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,265 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 13:06:20,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 13:06:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 13:06:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 13:06:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 13:06:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:06:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:06:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 13:06:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 13:06:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 13:06:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 13:06:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 13:06:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:06:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 13:06:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 13:06:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:06:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 13:06:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 13:06:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:20,682 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 13:06:20,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712855317] [2020-08-18 13:06:20,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:20,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 13:06:20,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647345528] [2020-08-18 13:06:20,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:06:20,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:06:20,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:06:20,687 INFO L87 Difference]: Start difference. First operand 522 states and 765 transitions. Second operand 12 states. [2020-08-18 13:06:20,988 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 13:06:21,156 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 13:06:21,461 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 13:06:21,645 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:24,025 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 13:06:24,322 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-18 13:06:24,487 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 13:06:24,787 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 13:06:24,947 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 13:06:25,230 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 13:06:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:33,234 INFO L93 Difference]: Finished difference Result 1386 states and 2171 transitions. [2020-08-18 13:06:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 13:06:33,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-18 13:06:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:33,245 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 13:06:33,246 INFO L226 Difference]: Without dead ends: 888 [2020-08-18 13:06:33,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-08-18 13:06:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-08-18 13:06:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 527. [2020-08-18 13:06:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-18 13:06:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 769 transitions. [2020-08-18 13:06:33,356 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 769 transitions. Word has length 254 [2020-08-18 13:06:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:33,357 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 769 transitions. [2020-08-18 13:06:33,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:06:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 769 transitions. [2020-08-18 13:06:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 13:06:33,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:33,362 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 13:06:33,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:06:33,362 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:33,363 INFO L82 PathProgramCache]: Analyzing trace with hash 458447040, now seen corresponding path program 1 times [2020-08-18 13:06:33,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:33,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395763458] [2020-08-18 13:06:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:33,734 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 13:06:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:33,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 13:06:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 13:06:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 13:06:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 13:06:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:06:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:06:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 13:06:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 13:06:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 13:06:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 13:06:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 13:06:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:06:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 13:06:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 13:06:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:06:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 13:06:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 13:06:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,168 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 13:06:34,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395763458] [2020-08-18 13:06:34,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:34,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:06:34,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536834604] [2020-08-18 13:06:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:06:34,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:06:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:06:34,171 INFO L87 Difference]: Start difference. First operand 527 states and 769 transitions. Second operand 9 states. [2020-08-18 13:06:34,601 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 13:06:34,811 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:35,069 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:42,878 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 13:06:43,100 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 13:06:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:48,995 INFO L93 Difference]: Finished difference Result 2134 states and 3311 transitions. [2020-08-18 13:06:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 13:06:48,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2020-08-18 13:06:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:49,010 INFO L225 Difference]: With dead ends: 2134 [2020-08-18 13:06:49,011 INFO L226 Difference]: Without dead ends: 1639 [2020-08-18 13:06:49,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-18 13:06:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-08-18 13:06:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1040. [2020-08-18 13:06:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-18 13:06:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1532 transitions. [2020-08-18 13:06:49,224 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1532 transitions. Word has length 254 [2020-08-18 13:06:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:49,225 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1532 transitions. [2020-08-18 13:06:49,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:06:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1532 transitions. [2020-08-18 13:06:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 13:06:49,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:49,233 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 13:06:49,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:06:49,233 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1062661057, now seen corresponding path program 1 times [2020-08-18 13:06:49,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:49,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137958111] [2020-08-18 13:06:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,716 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 13:06:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 13:06:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 13:06:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 13:06:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 13:06:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:06:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:06:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 13:06:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 13:06:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 13:06:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 13:06:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 13:06:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:06:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 13:06:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 13:06:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:06:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 13:06:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 13:06:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,265 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 13:06:50,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137958111] [2020-08-18 13:06:50,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:50,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:06:50,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939294336] [2020-08-18 13:06:50,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:06:50,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:50,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:06:50,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:06:50,269 INFO L87 Difference]: Start difference. First operand 1040 states and 1532 transitions. Second operand 10 states. [2020-08-18 13:06:50,724 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 13:06:50,932 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:51,153 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:59,073 INFO L93 Difference]: Finished difference Result 2636 states and 4012 transitions. [2020-08-18 13:06:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:06:59,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2020-08-18 13:06:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:59,087 INFO L225 Difference]: With dead ends: 2636 [2020-08-18 13:06:59,088 INFO L226 Difference]: Without dead ends: 1628 [2020-08-18 13:06:59,093 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 13:06:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-08-18 13:06:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1040. [2020-08-18 13:06:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-18 13:06:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1525 transitions. [2020-08-18 13:06:59,278 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1525 transitions. Word has length 254 [2020-08-18 13:06:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:59,278 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1525 transitions. [2020-08-18 13:06:59,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:06:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1525 transitions. [2020-08-18 13:06:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 13:06:59,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:59,281 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 13:06:59,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:06:59,282 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:59,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:59,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1143415041, now seen corresponding path program 1 times [2020-08-18 13:06:59,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:59,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075682620] [2020-08-18 13:06:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,619 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 13:06:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 13:06:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 13:06:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 13:06:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 13:06:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:06:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:06:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 13:06:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 13:06:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 13:06:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 13:06:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 13:06:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:06:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 13:06:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 13:06:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:06:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 13:06:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:59,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 13:06:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:00,055 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 13:07:00,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075682620] [2020-08-18 13:07:00,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:00,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:07:00,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954866055] [2020-08-18 13:07:00,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:07:00,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:00,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:07:00,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:07:00,060 INFO L87 Difference]: Start difference. First operand 1040 states and 1525 transitions. Second operand 10 states. [2020-08-18 13:07:00,463 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 13:07:00,663 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:07:00,894 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135