/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:43:56,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:43:56,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:43:56,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:43:56,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:43:56,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:43:56,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:43:56,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:43:56,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:43:56,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:43:56,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:43:56,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:43:56,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:43:56,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:43:56,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:43:56,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:43:56,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:43:56,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:43:56,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:43:56,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:43:56,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:43:56,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:43:56,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:43:56,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:43:56,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:43:56,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:43:56,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:43:56,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:43:56,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:43:56,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:43:56,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:43:56,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:43:56,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:43:56,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:43:56,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:43:56,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:43:56,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:43:56,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:43:56,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:43:56,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:43:56,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:43:56,868 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 [2020-08-19 03:43:56,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:43:56,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:43:56,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:43:56,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:43:56,912 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:43:56,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:43:56,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:43:56,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:43:56,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:43:56,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:43:56,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:43:56,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:43:56,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:43:56,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:43:56,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:43:56,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:43:56,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:43:56,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:43:56,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:43:56,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:43:56,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:43:56,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:43:56,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:43:56,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:43:56,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:43:56,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:43:56,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:43:56,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:43:56,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:43:56,920 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:43:57,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:43:57,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:43:57,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:43:57,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:43:57,270 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:43:57,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 03:43:57,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90cf88f80/f6dff64b43d045d6b964e8bd1ae64434/FLAG4e68fce7f [2020-08-19 03:43:57,837 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:43:57,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 03:43:57,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90cf88f80/f6dff64b43d045d6b964e8bd1ae64434/FLAG4e68fce7f [2020-08-19 03:43:58,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90cf88f80/f6dff64b43d045d6b964e8bd1ae64434 [2020-08-19 03:43:58,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:43:58,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:43:58,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:43:58,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:43:58,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:43:58,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58, skipping insertion in model container [2020-08-19 03:43:58,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:43:58,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:43:58,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:43:58,494 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:43:58,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:43:58,638 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:43:58,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58 WrapperNode [2020-08-19 03:43:58,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:43:58,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:43:58,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:43:58,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:43:58,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (1/1) ... [2020-08-19 03:43:58,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:43:58,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:43:58,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:43:58,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:43:58,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (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 [2020-08-19 03:43:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:43:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:43:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-19 03:43:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-19 03:43:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-19 03:43:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-19 03:43:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-19 03:43:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-19 03:43:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-19 03:43:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-19 03:43:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-19 03:43:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-19 03:43:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-19 03:43:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-19 03:43:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-19 03:43:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-19 03:43:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-19 03:43:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-19 03:43:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-19 03:43:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-19 03:43:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:43:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:43:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:43:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-19 03:43:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-19 03:43:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-19 03:43:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-19 03:43:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-19 03:43:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-19 03:43:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-19 03:43:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-19 03:43:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-19 03:43:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-19 03:43:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-19 03:43:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-19 03:43:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-19 03:43:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-19 03:43:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-19 03:43:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-19 03:43:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-19 03:43:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-19 03:43:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:43:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:43:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:43:59,229 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:43:59,229 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:43:59,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:43:59 BoogieIcfgContainer [2020-08-19 03:43:59,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:43:59,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:43:59,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:43:59,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:43:59,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:43:58" (1/3) ... [2020-08-19 03:43:59,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee99037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:43:59, skipping insertion in model container [2020-08-19 03:43:59,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:58" (2/3) ... [2020-08-19 03:43:59,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee99037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:43:59, skipping insertion in model container [2020-08-19 03:43:59,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:43:59" (3/3) ... [2020-08-19 03:43:59,246 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-19 03:43:59,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:43:59,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:43:59,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:43:59,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:43:59,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:43:59,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:43:59,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:43:59,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:43:59,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:43:59,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:43:59,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:43:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-19 03:43:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 03:43:59,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:59,351 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] [2020-08-19 03:43:59,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:59,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:59,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-19 03:43:59,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:59,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687830423] [2020-08-19 03:43:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:43:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:43:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:43:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:43:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:43:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:43:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:43:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:43:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:43:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:43:59,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687830423] [2020-08-19 03:43:59,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:43:59,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:43:59,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309985436] [2020-08-19 03:43:59,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:43:59,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:59,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:43:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:43:59,976 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-19 03:44:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:01,929 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-19 03:44:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:44:01,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 03:44:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:01,953 INFO L225 Difference]: With dead ends: 479 [2020-08-19 03:44:01,953 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 03:44:01,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:44:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 03:44:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-19 03:44:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 03:44:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-19 03:44:02,067 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-19 03:44:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:02,068 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-19 03:44:02,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:44:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-19 03:44:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 03:44:02,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:02,072 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] [2020-08-19 03:44:02,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:44:02,073 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:02,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-19 03:44:02,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:02,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387871887] [2020-08-19 03:44:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:44:02,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387871887] [2020-08-19 03:44:02,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:02,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:44:02,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159544124] [2020-08-19 03:44:02,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:44:02,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:02,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:44:02,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:44:02,304 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-19 03:44:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:03,353 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-19 03:44:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:44:03,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 03:44:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:03,358 INFO L225 Difference]: With dead ends: 545 [2020-08-19 03:44:03,359 INFO L226 Difference]: Without dead ends: 331 [2020-08-19 03:44:03,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:44:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-19 03:44:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-19 03:44:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 03:44:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-19 03:44:03,404 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-19 03:44:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:03,404 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-19 03:44:03,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:44:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-19 03:44:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 03:44:03,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:03,408 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] [2020-08-19 03:44:03,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:44:03,408 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-19 03:44:03,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:03,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871201358] [2020-08-19 03:44:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:44:03,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871201358] [2020-08-19 03:44:03,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:03,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:44:03,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88849967] [2020-08-19 03:44:03,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:44:03,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:03,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:44:03,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:44:03,586 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-19 03:44:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:04,854 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-19 03:44:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:44:04,855 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 03:44:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:04,859 INFO L225 Difference]: With dead ends: 548 [2020-08-19 03:44:04,860 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 03:44:04,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:44:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 03:44:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-19 03:44:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 03:44:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-19 03:44:04,933 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-19 03:44:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:04,936 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-19 03:44:04,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:44:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-19 03:44:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 03:44:04,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:04,947 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] [2020-08-19 03:44:04,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:44:04,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-19 03:44:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:04,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834371455] [2020-08-19 03:44:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:44:05,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834371455] [2020-08-19 03:44:05,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:05,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:44:05,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642096944] [2020-08-19 03:44:05,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:44:05,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:05,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:44:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:44:05,191 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-19 03:44:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:06,808 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-19 03:44:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:44:06,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 03:44:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:06,814 INFO L225 Difference]: With dead ends: 848 [2020-08-19 03:44:06,814 INFO L226 Difference]: Without dead ends: 630 [2020-08-19 03:44:06,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:44:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-19 03:44:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-19 03:44:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-19 03:44:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-19 03:44:06,865 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-19 03:44:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:06,865 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-19 03:44:06,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:44:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-19 03:44:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:44:06,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:06,868 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:06,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:44:06,868 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:06,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-19 03:44:06,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:06,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360698440] [2020-08-19 03:44:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 03:44:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:44:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 03:44:07,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360698440] [2020-08-19 03:44:07,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:07,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:44:07,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155434513] [2020-08-19 03:44:07,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:44:07,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:07,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:44:07,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:44:07,049 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-19 03:44:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:08,453 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-19 03:44:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:44:08,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 03:44:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:08,464 INFO L225 Difference]: With dead ends: 1125 [2020-08-19 03:44:08,464 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 03:44:08,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:44:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 03:44:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-19 03:44:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-19 03:44:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-19 03:44:08,555 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-19 03:44:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:08,556 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-19 03:44:08,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:44:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-19 03:44:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:44:08,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:08,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:08,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:44:08,559 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-19 03:44:08,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:08,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074822015] [2020-08-19 03:44:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 03:44:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:44:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 03:44:08,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074822015] [2020-08-19 03:44:08,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:08,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:44:08,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904592653] [2020-08-19 03:44:08,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:44:08,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:08,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:44:08,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:44:08,833 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-19 03:44:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:10,460 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-19 03:44:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 03:44:10,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 03:44:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:10,470 INFO L225 Difference]: With dead ends: 1387 [2020-08-19 03:44:10,471 INFO L226 Difference]: Without dead ends: 859 [2020-08-19 03:44:10,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-08-19 03:44:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-19 03:44:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-19 03:44:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-19 03:44:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-19 03:44:10,559 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-19 03:44:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:10,561 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-19 03:44:10,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:44:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-19 03:44:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:44:10,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:10,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:10,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:44:10,565 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:10,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-19 03:44:10,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:10,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684535070] [2020-08-19 03:44:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 03:44:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:44:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 03:44:10,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684535070] [2020-08-19 03:44:10,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:44:10,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 03:44:10,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311782130] [2020-08-19 03:44:10,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:44:10,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:10,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:44:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:44:10,741 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-19 03:44:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:12,326 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-19 03:44:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:44:12,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 03:44:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:12,338 INFO L225 Difference]: With dead ends: 1930 [2020-08-19 03:44:12,339 INFO L226 Difference]: Without dead ends: 1304 [2020-08-19 03:44:12,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:44:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-19 03:44:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-19 03:44:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-19 03:44:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-19 03:44:12,445 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-19 03:44:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:12,446 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-19 03:44:12,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:44:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-19 03:44:12,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 03:44:12,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:12,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:12,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:44:12,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:12,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:12,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1157498048, now seen corresponding path program 1 times [2020-08-19 03:44:12,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:12,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824462993] [2020-08-19 03:44:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 03:44:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:44:12,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824462993] [2020-08-19 03:44:12,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:12,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:44:12,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445990511] [2020-08-19 03:44:12,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:44:12,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:44:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:44:12,621 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 9 states. [2020-08-19 03:44:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:13,796 INFO L93 Difference]: Finished difference Result 2356 states and 3058 transitions. [2020-08-19 03:44:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:44:13,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-08-19 03:44:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:13,807 INFO L225 Difference]: With dead ends: 2356 [2020-08-19 03:44:13,807 INFO L226 Difference]: Without dead ends: 1278 [2020-08-19 03:44:13,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:44:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-19 03:44:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1093. [2020-08-19 03:44:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-08-19 03:44:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1375 transitions. [2020-08-19 03:44:13,939 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1375 transitions. Word has length 95 [2020-08-19 03:44:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:13,940 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1375 transitions. [2020-08-19 03:44:13,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:44:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1375 transitions. [2020-08-19 03:44:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 03:44:13,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:13,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:13,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:44:13,944 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-19 03:44:13,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:13,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951267955] [2020-08-19 03:44:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:44:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:44:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 03:44:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:44:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:44:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:44:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:44:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 03:44:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 03:44:14,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951267955] [2020-08-19 03:44:14,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:14,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:44:14,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605102370] [2020-08-19 03:44:14,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:44:14,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:44:14,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:44:14,128 INFO L87 Difference]: Start difference. First operand 1093 states and 1375 transitions. Second operand 8 states. [2020-08-19 03:44:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:15,777 INFO L93 Difference]: Finished difference Result 3451 states and 4586 transitions. [2020-08-19 03:44:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:44:15,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-19 03:44:15,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:15,791 INFO L225 Difference]: With dead ends: 3451 [2020-08-19 03:44:15,791 INFO L226 Difference]: Without dead ends: 1835 [2020-08-19 03:44:15,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:44:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-19 03:44:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1483. [2020-08-19 03:44:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-08-19 03:44:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1810 transitions. [2020-08-19 03:44:15,948 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1810 transitions. Word has length 95 [2020-08-19 03:44:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:15,949 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 1810 transitions. [2020-08-19 03:44:15,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:44:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1810 transitions. [2020-08-19 03:44:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-19 03:44:15,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:15,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:15,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:44:15,953 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:15,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-19 03:44:15,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:15,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592993161] [2020-08-19 03:44:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:44:15,976 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:44:15,976 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:44:15,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:44:16,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:44:16 BoogieIcfgContainer [2020-08-19 03:44:16,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:44:16,015 INFO L168 Benchmark]: Toolchain (without parser) took 17798.16 ms. Allocated memory was 139.5 MB in the beginning and 458.2 MB in the end (delta: 318.8 MB). Free memory was 102.0 MB in the beginning and 356.6 MB in the end (delta: -254.6 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:16,016 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:44:16,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.79 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 178.7 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:16,018 INFO L168 Benchmark]: Boogie Preprocessor took 52.73 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 176.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:16,018 INFO L168 Benchmark]: RCFGBuilder took 543.11 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 146.8 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:16,019 INFO L168 Benchmark]: TraceAbstraction took 16775.64 ms. Allocated memory was 202.4 MB in the beginning and 458.2 MB in the end (delta: 255.9 MB). Free memory was 146.1 MB in the beginning and 356.6 MB in the end (delta: -210.5 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:16,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.79 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 178.7 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.73 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 176.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.11 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 146.8 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16775.64 ms. Allocated memory was 202.4 MB in the beginning and 458.2 MB in the end (delta: 255.9 MB). Free memory was 146.1 MB in the beginning and 356.6 MB in the end (delta: -210.5 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1235 SDtfs, 4705 SDslu, 492 SDs, 0 SdLazy, 7996 SolverSat, 2857 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1566 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 898 NumberOfCodeBlocks, 898 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 138936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 69/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...