/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:37:29,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:37:29,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:37:29,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:37:29,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:37:29,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:37:29,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:37:29,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:37:29,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:37:29,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:37:29,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:37:29,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:37:29,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:37:29,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:37:29,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:37:29,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:37:29,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:37:29,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:37:29,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:37:29,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:37:29,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:37:29,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:37:29,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:37:29,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:37:29,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:37:29,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:37:29,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:37:29,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:37:29,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:37:29,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:37:29,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:37:29,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:37:29,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:37:29,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:37:29,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:37:29,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:37:29,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:37:29,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:37:29,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:37:29,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:37:29,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:37:29,961 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 [2020-08-22 05:37:30,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:37:30,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:37:30,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:37:30,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:37:30,007 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:37:30,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:37:30,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:37:30,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:37:30,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:37:30,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:37:30,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:37:30,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:37:30,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:37:30,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:37:30,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:37:30,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:37:30,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:37:30,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:37:30,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:37:30,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:37:30,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:37:30,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:37:30,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:37:30,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:37:30,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:37:30,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:37:30,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:37:30,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:37:30,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:37:30,014 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:37:30,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:37:30,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:37:30,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:37:30,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:37:30,330 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:37:30,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 05:37:30,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbaf6ae44/d50839f1a47a4d2f90a0c0501ae95b5e/FLAG29986325d [2020-08-22 05:37:30,841 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:37:30,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 05:37:30,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbaf6ae44/d50839f1a47a4d2f90a0c0501ae95b5e/FLAG29986325d [2020-08-22 05:37:31,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbaf6ae44/d50839f1a47a4d2f90a0c0501ae95b5e [2020-08-22 05:37:31,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:37:31,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:37:31,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:37:31,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:37:31,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:37:31,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e5dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31, skipping insertion in model container [2020-08-22 05:37:31,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:37:31,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:37:31,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:37:31,505 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:37:31,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:37:31,640 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:37:31,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31 WrapperNode [2020-08-22 05:37:31,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:37:31,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:37:31,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:37:31,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:37:31,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (1/1) ... [2020-08-22 05:37:31,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:37:31,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:37:31,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:37:31,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:37:31,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (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 [2020-08-22 05:37:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:37:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:37:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 05:37:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 05:37:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 05:37:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 05:37:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 05:37:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 05:37:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 05:37:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 05:37:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 05:37:31,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 05:37:31,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 05:37:31,757 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 05:37:31,757 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 05:37:31,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 05:37:31,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 05:37:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 05:37:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 05:37:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 05:37:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:37:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:37:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:37:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 05:37:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 05:37:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 05:37:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 05:37:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 05:37:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 05:37:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 05:37:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 05:37:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 05:37:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 05:37:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 05:37:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 05:37:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 05:37:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 05:37:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 05:37:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 05:37:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 05:37:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 05:37:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:37:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:37:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:37:32,216 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:37:32,216 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:37:32,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:37:32 BoogieIcfgContainer [2020-08-22 05:37:32,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:37:32,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:37:32,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:37:32,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:37:32,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:37:31" (1/3) ... [2020-08-22 05:37:32,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5abb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:37:32, skipping insertion in model container [2020-08-22 05:37:32,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:37:31" (2/3) ... [2020-08-22 05:37:32,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5abb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:37:32, skipping insertion in model container [2020-08-22 05:37:32,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:37:32" (3/3) ... [2020-08-22 05:37:32,233 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-22 05:37:32,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:37:32,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:37:32,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:37:32,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:37:32,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:37:32,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:37:32,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:37:32,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:37:32,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:37:32,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:37:32,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:37:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-22 05:37:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 05:37:32,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:32,336 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] [2020-08-22 05:37:32,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-22 05:37:32,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:32,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717631813] [2020-08-22 05:37:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:37:32,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717631813] [2020-08-22 05:37:32,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:32,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:37:32,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988509276] [2020-08-22 05:37:32,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:37:32,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:37:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:37:32,883 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-22 05:37:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:34,948 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-22 05:37:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:37:34,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 05:37:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:34,969 INFO L225 Difference]: With dead ends: 479 [2020-08-22 05:37:34,969 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 05:37:34,975 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 [2020-08-22 05:37:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 05:37:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-22 05:37:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 05:37:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-22 05:37:35,087 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-22 05:37:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:35,089 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-22 05:37:35,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:37:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-22 05:37:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 05:37:35,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:35,104 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] [2020-08-22 05:37:35,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:37:35,104 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-22 05:37:35,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:35,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162012006] [2020-08-22 05:37:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:37:35,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162012006] [2020-08-22 05:37:35,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:35,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:37:35,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487037237] [2020-08-22 05:37:35,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:37:35,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:35,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:37:35,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:37:35,312 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-22 05:37:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:36,309 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-22 05:37:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:37:36,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 05:37:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:36,314 INFO L225 Difference]: With dead ends: 545 [2020-08-22 05:37:36,315 INFO L226 Difference]: Without dead ends: 331 [2020-08-22 05:37:36,317 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 [2020-08-22 05:37:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-22 05:37:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-22 05:37:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 05:37:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-22 05:37:36,359 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-22 05:37:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:36,360 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-22 05:37:36,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:37:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-22 05:37:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 05:37:36,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:36,363 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] [2020-08-22 05:37:36,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:37:36,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:36,364 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-22 05:37:36,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:36,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862296641] [2020-08-22 05:37:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:37:36,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862296641] [2020-08-22 05:37:36,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:36,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:37:36,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66282512] [2020-08-22 05:37:36,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:37:36,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:36,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:37:36,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:37:36,574 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-22 05:37:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:37,846 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-22 05:37:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:37:37,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 05:37:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:37,851 INFO L225 Difference]: With dead ends: 548 [2020-08-22 05:37:37,852 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 05:37:37,853 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 [2020-08-22 05:37:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 05:37:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-22 05:37:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 05:37:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-22 05:37:37,889 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-22 05:37:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:37,890 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-22 05:37:37,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:37:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-22 05:37:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 05:37:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:37,892 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] [2020-08-22 05:37:37,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:37:37,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-22 05:37:37,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:37,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253810744] [2020-08-22 05:37:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:37,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:37:38,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253810744] [2020-08-22 05:37:38,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:38,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:37:38,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688720546] [2020-08-22 05:37:38,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:37:38,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:37:38,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:37:38,139 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-22 05:37:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:39,761 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-22 05:37:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:37:39,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 05:37:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:39,768 INFO L225 Difference]: With dead ends: 848 [2020-08-22 05:37:39,769 INFO L226 Difference]: Without dead ends: 630 [2020-08-22 05:37:39,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:37:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-22 05:37:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-22 05:37:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-22 05:37:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-22 05:37:39,832 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-22 05:37:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:39,833 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-22 05:37:39,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:37:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-22 05:37:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:37:39,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:39,835 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] [2020-08-22 05:37:39,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:37:39,836 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-22 05:37:39,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:39,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556726242] [2020-08-22 05:37:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:37:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 05:37:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:37:40,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556726242] [2020-08-22 05:37:40,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:40,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:37:40,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027547437] [2020-08-22 05:37:40,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:37:40,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:37:40,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:37:40,148 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-22 05:37:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:41,468 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-22 05:37:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:37:41,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 05:37:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:41,475 INFO L225 Difference]: With dead ends: 1125 [2020-08-22 05:37:41,476 INFO L226 Difference]: Without dead ends: 686 [2020-08-22 05:37:41,478 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 [2020-08-22 05:37:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-22 05:37:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-22 05:37:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-22 05:37:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-22 05:37:41,542 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-22 05:37:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:41,542 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-22 05:37:41,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:37:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-22 05:37:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:37:41,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:41,545 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] [2020-08-22 05:37:41,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:37:41,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:41,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:41,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-22 05:37:41,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:41,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672098176] [2020-08-22 05:37:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:37:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 05:37:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:37:41,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672098176] [2020-08-22 05:37:41,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:41,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:37:41,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733466537] [2020-08-22 05:37:41,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:37:41,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:37:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:37:41,767 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-22 05:37:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:43,479 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-22 05:37:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 05:37:43,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 05:37:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:43,491 INFO L225 Difference]: With dead ends: 1387 [2020-08-22 05:37:43,491 INFO L226 Difference]: Without dead ends: 859 [2020-08-22 05:37:43,495 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 [2020-08-22 05:37:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-22 05:37:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-22 05:37:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-22 05:37:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-22 05:37:43,561 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-22 05:37:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:43,562 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-22 05:37:43,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:37:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-22 05:37:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:37:43,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:43,566 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] [2020-08-22 05:37:43,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:37:43,566 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-22 05:37:43,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:43,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178702444] [2020-08-22 05:37:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:37:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 05:37:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 05:37:43,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178702444] [2020-08-22 05:37:43,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:37:43,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 05:37:43,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046201048] [2020-08-22 05:37:43,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:37:43,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:37:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:37:43,725 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-22 05:37:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:45,128 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-22 05:37:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:37:45,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 05:37:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:45,145 INFO L225 Difference]: With dead ends: 1930 [2020-08-22 05:37:45,145 INFO L226 Difference]: Without dead ends: 1304 [2020-08-22 05:37:45,151 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 [2020-08-22 05:37:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-22 05:37:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-22 05:37:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-22 05:37:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-22 05:37:45,295 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-22 05:37:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:45,295 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-22 05:37:45,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:37:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-22 05:37:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 05:37:45,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:45,299 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] [2020-08-22 05:37:45,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:37:45,300 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:45,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-22 05:37:45,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:45,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526474025] [2020-08-22 05:37:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:37:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:37:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:37:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:37:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 05:37:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 05:37:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:37:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:37:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:37:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:37:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:37:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 05:37:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:37:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 05:37:45,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526474025] [2020-08-22 05:37:45,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:37:45,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:37:45,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626353682] [2020-08-22 05:37:45,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:37:45,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:37:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:37:45,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:37:45,506 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-22 05:37:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:37:47,341 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-22 05:37:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:37:47,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-22 05:37:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:37:47,353 INFO L225 Difference]: With dead ends: 3462 [2020-08-22 05:37:47,354 INFO L226 Difference]: Without dead ends: 1841 [2020-08-22 05:37:47,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:37:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-22 05:37:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-22 05:37:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-22 05:37:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-22 05:37:47,485 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-22 05:37:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:37:47,486 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-22 05:37:47,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:37:47,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-22 05:37:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 05:37:47,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:37:47,491 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] [2020-08-22 05:37:47,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:37:47,492 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:37:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:37:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-22 05:37:47,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:37:47,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429664854] [2020-08-22 05:37:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:37:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:37:47,530 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:37:47,530 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:37:47,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:37:47,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:37:47 BoogieIcfgContainer [2020-08-22 05:37:47,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:37:47,590 INFO L168 Benchmark]: Toolchain (without parser) took 16383.66 ms. Allocated memory was 141.6 MB in the beginning and 417.3 MB in the end (delta: 275.8 MB). Free memory was 104.1 MB in the beginning and 292.5 MB in the end (delta: -188.4 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:37:47,591 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:37:47,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.01 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 184.3 MB in the end (delta: -80.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:37:47,593 INFO L168 Benchmark]: Boogie Preprocessor took 43.81 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 182.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:37:47,594 INFO L168 Benchmark]: RCFGBuilder took 537.43 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 151.9 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:37:47,597 INFO L168 Benchmark]: TraceAbstraction took 15358.06 ms. Allocated memory was 205.5 MB in the beginning and 417.3 MB in the end (delta: 211.8 MB). Free memory was 151.2 MB in the beginning and 292.5 MB in the end (delta: -141.3 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:37:47,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.01 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 184.3 MB in the end (delta: -80.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.81 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 182.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.43 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 151.9 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15358.06 ms. Allocated memory was 205.5 MB in the beginning and 417.3 MB in the end (delta: 211.8 MB). Free memory was 151.2 MB in the beginning and 292.5 MB in the end (delta: -141.3 MB). Peak memory consumption was 70.5 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: 15.2s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7382 SolverSat, 2602 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1489occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1381 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 803 NumberOfCodeBlocks, 803 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 666 ConstructedInterpolants, 0 QuantifiedInterpolants, 121640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/57 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...