/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:41:22,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:41:22,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:41:22,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:41:22,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:41:22,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:41:22,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:41:22,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:41:22,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:41:22,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:41:22,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:41:22,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:41:22,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:41:22,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:41:22,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:41:22,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:41:22,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:41:22,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:41:22,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:41:22,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:41:22,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:41:22,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:41:22,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:41:22,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:41:22,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:41:22,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:41:22,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:41:22,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:41:22,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:41:22,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:41:22,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:41:22,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:41:22,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:41:22,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:41:22,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:41:22,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:41:22,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:41:22,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:41:22,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:41:22,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:41:22,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:41:22,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:41:22,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:41:22,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:41:22,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:41:22,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:41:22,530 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:41:22,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:41:22,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:41:22,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:41:22,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:41:22,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:41:22,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:41:22,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:41:22,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:41:22,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:41:22,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:41:22,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:41:22,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:41:22,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:41:22,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:41:22,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:41:22,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:41:22,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:41:22,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:41:22,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:41:22,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:41:22,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:41:22,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:41:22,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:41:22,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:41:22,536 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:41:22,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:41:22,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:41:22,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:41:22,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:41:22,890 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:41:22,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-21 16:41:22,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a77307eb5/f97b67222f1b491cad58aabf493b44ab/FLAG9ef70895d [2020-08-21 16:41:23,525 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:41:23,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-21 16:41:23,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a77307eb5/f97b67222f1b491cad58aabf493b44ab/FLAG9ef70895d [2020-08-21 16:41:23,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a77307eb5/f97b67222f1b491cad58aabf493b44ab [2020-08-21 16:41:23,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:41:23,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:41:23,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:41:23,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:41:23,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:41:23,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:41:23" (1/1) ... [2020-08-21 16:41:23,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:23, skipping insertion in model container [2020-08-21 16:41:23,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:41:23" (1/1) ... [2020-08-21 16:41:23,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:41:23,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:41:24,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:41:24,378 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:41:24,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:41:24,633 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:41:24,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24 WrapperNode [2020-08-21 16:41:24,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:41:24,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:41:24,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:41:24,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:41:24,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... [2020-08-21 16:41:24,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:41:24,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:41:24,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:41:24,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:41:24,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:41:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:41:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:41:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 16:41:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 16:41:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 16:41:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-21 16:41:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-08-21 16:41:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-08-21 16:41:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-08-21 16:41:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-08-21 16:41:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-08-21 16:41:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-08-21 16:41:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-08-21 16:41:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-08-21 16:41:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-08-21 16:41:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-08-21 16:41:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-08-21 16:41:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit14 [2020-08-21 16:41:24,810 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 16:41:24,810 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 16:41:24,810 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-21 16:41:24,810 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-08-21 16:41:24,810 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-08-21 16:41:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-08-21 16:41:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-08-21 16:41:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-08-21 16:41:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-08-21 16:41:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-08-21 16:41:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-08-21 16:41:24,812 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-08-21 16:41:24,812 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-08-21 16:41:24,812 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-08-21 16:41:24,812 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit14_triggered [2020-08-21 16:41:24,812 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 16:41:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 16:41:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 16:41:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 16:41:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 16:41:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 16:41:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 16:41:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 16:41:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 16:41:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 16:41:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 16:41:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 16:41:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 16:41:24,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:41:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:41:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:41:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 16:41:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 16:41:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-08-21 16:41:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-08-21 16:41:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-08-21 16:41:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-08-21 16:41:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-08-21 16:41:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-08-21 16:41:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-08-21 16:41:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit14_triggered [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-08-21 16:41:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-08-21 16:41:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure transmit14 [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 16:41:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 16:41:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 16:41:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 16:41:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 16:41:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 16:41:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 16:41:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 16:41:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 16:41:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:41:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:41:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:41:26,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:41:26,258 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-21 16:41:26,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:41:26 BoogieIcfgContainer [2020-08-21 16:41:26,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:41:26,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:41:26,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:41:26,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:41:26,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:41:23" (1/3) ... [2020-08-21 16:41:26,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353d8106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:41:26, skipping insertion in model container [2020-08-21 16:41:26,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:24" (2/3) ... [2020-08-21 16:41:26,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353d8106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:41:26, skipping insertion in model container [2020-08-21 16:41:26,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:41:26" (3/3) ... [2020-08-21 16:41:26,275 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2020-08-21 16:41:26,286 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:41:26,295 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:41:26,314 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:41:26,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:41:26,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:41:26,348 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:41:26,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:41:26,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:41:26,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:41:26,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:41:26,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:41:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states. [2020-08-21 16:41:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-21 16:41:26,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:26,402 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] [2020-08-21 16:41:26,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:26,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1383974208, now seen corresponding path program 1 times [2020-08-21 16:41:26,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:26,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841124972] [2020-08-21 16:41:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,381 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-21 16:41:27,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:41:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:41:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:41:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:41:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 16:41:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:41:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:41:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:41:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:41:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:41:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:41:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:41:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:41:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 16:41:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 16:41:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:28,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841124972] [2020-08-21 16:41:28,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:28,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:41:28,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551781030] [2020-08-21 16:41:28,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:41:28,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:28,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:41:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:41:28,042 INFO L87 Difference]: Start difference. First operand 526 states. Second operand 12 states. [2020-08-21 16:41:28,407 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-21 16:41:28,556 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:41:28,909 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-21 16:41:29,134 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:41:31,511 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-21 16:41:31,829 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-21 16:41:32,181 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-21 16:41:32,342 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-21 16:41:32,651 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-21 16:41:32,818 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-21 16:41:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:41,136 INFO L93 Difference]: Finished difference Result 1409 states and 2346 transitions. [2020-08-21 16:41:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 16:41:41,139 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-21 16:41:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:41,170 INFO L225 Difference]: With dead ends: 1409 [2020-08-21 16:41:41,170 INFO L226 Difference]: Without dead ends: 887 [2020-08-21 16:41:41,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:41:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-08-21 16:41:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 522. [2020-08-21 16:41:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-08-21 16:41:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 765 transitions. [2020-08-21 16:41:41,391 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 765 transitions. Word has length 254 [2020-08-21 16:41:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:41,392 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 765 transitions. [2020-08-21 16:41:41,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:41:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 765 transitions. [2020-08-21 16:41:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-21 16:41:41,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:41,398 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] [2020-08-21 16:41:41,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:41:41,398 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:41,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1062988672, now seen corresponding path program 1 times [2020-08-21 16:41:41,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:41,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558993179] [2020-08-21 16:41:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,741 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-21 16:41:41,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:41:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:41:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:41:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:41:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 16:41:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:41:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:41:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:41:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:41:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:41:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:41:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:41:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:41:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 16:41:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 16:41:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:42,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558993179] [2020-08-21 16:41:42,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:42,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:41:42,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808421757] [2020-08-21 16:41:42,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:41:42,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:41:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:41:42,239 INFO L87 Difference]: Start difference. First operand 522 states and 765 transitions. Second operand 12 states. [2020-08-21 16:41:42,605 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-21 16:41:42,746 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:41:43,061 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-21 16:41:43,251 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:41:45,629 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-21 16:41:45,954 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-21 16:41:46,117 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-21 16:41:46,416 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-21 16:41:46,574 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-21 16:41:46,855 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-21 16:41:54,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:54,577 INFO L93 Difference]: Finished difference Result 1386 states and 2171 transitions. [2020-08-21 16:41:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:41:54,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-21 16:41:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:54,588 INFO L225 Difference]: With dead ends: 1386 [2020-08-21 16:41:54,588 INFO L226 Difference]: Without dead ends: 888 [2020-08-21 16:41:54,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-08-21 16:41:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-08-21 16:41:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 527. [2020-08-21 16:41:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-21 16:41:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 769 transitions. [2020-08-21 16:41:54,693 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 769 transitions. Word has length 254 [2020-08-21 16:41:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:54,693 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 769 transitions. [2020-08-21 16:41:54,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:41:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 769 transitions. [2020-08-21 16:41:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-21 16:41:54,698 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:54,698 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] [2020-08-21 16:41:54,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:41:54,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:54,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:54,699 INFO L82 PathProgramCache]: Analyzing trace with hash 458447040, now seen corresponding path program 1 times [2020-08-21 16:41:54,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:54,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024387650] [2020-08-21 16:41:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,158 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-21 16:41:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:41:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:41:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:41:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:41:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 16:41:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:41:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:41:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:41:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:41:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:41:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:41:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:41:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:41:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 16:41:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 16:41:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:55,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024387650] [2020-08-21 16:41:55,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:55,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:41:55,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69488059] [2020-08-21 16:41:55,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:41:55,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:41:55,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:41:55,868 INFO L87 Difference]: Start difference. First operand 527 states and 769 transitions. Second operand 9 states. [2020-08-21 16:41:56,364 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-21 16:41:56,578 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:41:56,795 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:04,307 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-21 16:42:04,538 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:42:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:10,075 INFO L93 Difference]: Finished difference Result 2134 states and 3311 transitions. [2020-08-21 16:42:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:42:10,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2020-08-21 16:42:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:10,088 INFO L225 Difference]: With dead ends: 2134 [2020-08-21 16:42:10,095 INFO L226 Difference]: Without dead ends: 1639 [2020-08-21 16:42:10,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:42:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-08-21 16:42:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1040. [2020-08-21 16:42:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-21 16:42:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1532 transitions. [2020-08-21 16:42:10,313 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1532 transitions. Word has length 254 [2020-08-21 16:42:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:10,313 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1532 transitions. [2020-08-21 16:42:10,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:42:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1532 transitions. [2020-08-21 16:42:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-21 16:42:10,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:10,319 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] [2020-08-21 16:42:10,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:42:10,319 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1062661057, now seen corresponding path program 1 times [2020-08-21 16:42:10,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:10,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648987255] [2020-08-21 16:42:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,664 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-21 16:42:10,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:42:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:42:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:42:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:42:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:42:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:42:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:42:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:42:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 16:42:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:42:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:42:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:42:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:42:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:42:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:42:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:42:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:42:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:42:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 16:42:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 16:42:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:42:11,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648987255] [2020-08-21 16:42:11,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:11,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:42:11,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479350265] [2020-08-21 16:42:11,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:42:11,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:11,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:42:11,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:42:11,054 INFO L87 Difference]: Start difference. First operand 1040 states and 1532 transitions. Second operand 10 states. [2020-08-21 16:42:11,389 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-21 16:42:11,587 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:11,861 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:19,666 INFO L93 Difference]: Finished difference Result 2636 states and 4012 transitions. [2020-08-21 16:42:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:42:19,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2020-08-21 16:42:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:19,677 INFO L225 Difference]: With dead ends: 2636 [2020-08-21 16:42:19,677 INFO L226 Difference]: Without dead ends: 1628 [2020-08-21 16:42:19,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:42:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-08-21 16:42:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1040. [2020-08-21 16:42:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-21 16:42:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1525 transitions. [2020-08-21 16:42:19,853 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1525 transitions. Word has length 254 [2020-08-21 16:42:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:19,855 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1525 transitions. [2020-08-21 16:42:19,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:42:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1525 transitions. [2020-08-21 16:42:19,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-21 16:42:19,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:19,859 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] [2020-08-21 16:42:19,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:42:19,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:19,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1143415041, now seen corresponding path program 1 times [2020-08-21 16:42:19,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:19,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818165332] [2020-08-21 16:42:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,208 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-21 16:42:20,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:42:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:42:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:42:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:42:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:42:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:42:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:42:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:42:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 16:42:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:42:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:42:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:42:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:42:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:42:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:42:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:42:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:42:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:42:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 16:42:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 16:42:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:42:20,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818165332] [2020-08-21 16:42:20,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:20,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:42:20,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344409326] [2020-08-21 16:42:20,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:42:20,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:20,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:42:20,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:42:20,735 INFO L87 Difference]: Start difference. First operand 1040 states and 1525 transitions. Second operand 10 states. [2020-08-21 16:42:21,019 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-21 16:42:21,155 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:21,340 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135