/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:15:49,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:15:49,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:15:50,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:15:50,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:15:50,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:15:50,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:15:50,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:15:50,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:15:50,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:15:50,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:15:50,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:15:50,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:15:50,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:15:50,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:15:50,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:15:50,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:15:50,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:15:50,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:15:50,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:15:50,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:15:50,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:15:50,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:15:50,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:15:50,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:15:50,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:15:50,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:15:50,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:15:50,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:15:50,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:15:50,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:15:50,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:15:50,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:15:50,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:15:50,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:15:50,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:15:50,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:15:50,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:15:50,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:15:50,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:15:50,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:15:50,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:15:50,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:15:50,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:15:50,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:15:50,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:15:50,085 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:15:50,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:15:50,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:15:50,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:15:50,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:15:50,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:15:50,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:15:50,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:15:50,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:15:50,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:15:50,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:15:50,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:15:50,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:15:50,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:15:50,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:15:50,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:15:50,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:15:50,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:15:50,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:15:50,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:15:50,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:15:50,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:15:50,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:15:50,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:15:50,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:15:50,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:15:50,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:15:50,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:15:50,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:15:50,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:15:50,411 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:15:50,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-18 21:15:50,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1f7d543f/cd138c2cc04b436e975382ceb7e99aac/FLAG93838c470 [2020-08-18 21:15:50,889 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:15:50,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-18 21:15:50,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1f7d543f/cd138c2cc04b436e975382ceb7e99aac/FLAG93838c470 [2020-08-18 21:15:51,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1f7d543f/cd138c2cc04b436e975382ceb7e99aac [2020-08-18 21:15:51,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:15:51,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:15:51,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:15:51,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:15:51,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:15:51,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a250be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51, skipping insertion in model container [2020-08-18 21:15:51,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:15:51,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:15:51,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:15:51,507 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:15:51,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:15:51,582 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:15:51,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51 WrapperNode [2020-08-18 21:15:51,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:15:51,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:15:51,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:15:51,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:15:51,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... [2020-08-18 21:15:51,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:15:51,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:15:51,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:15:51,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:15:51,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:15:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:15:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:15:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 21:15:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 21:15:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 21:15:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 21:15:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 21:15:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 21:15:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 21:15:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 21:15:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 21:15:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 21:15:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 21:15:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 21:15:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 21:15:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 21:15:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 21:15:51,789 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 21:15:51,789 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 21:15:51,789 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 21:15:51,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:15:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:15:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:15:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 21:15:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 21:15:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 21:15:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 21:15:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 21:15:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 21:15:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 21:15:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 21:15:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 21:15:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 21:15:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 21:15:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 21:15:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:15:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:15:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:15:52,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:15:52,244 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:15:52,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:15:52 BoogieIcfgContainer [2020-08-18 21:15:52,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:15:52,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:15:52,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:15:52,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:15:52,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:15:51" (1/3) ... [2020-08-18 21:15:52,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a57858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:15:52, skipping insertion in model container [2020-08-18 21:15:52,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:51" (2/3) ... [2020-08-18 21:15:52,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a57858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:15:52, skipping insertion in model container [2020-08-18 21:15:52,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:15:52" (3/3) ... [2020-08-18 21:15:52,262 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-18 21:15:52,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:15:52,280 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:15:52,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:15:52,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:15:52,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:15:52,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:15:52,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:15:52,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:15:52,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:15:52,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:15:52,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:15:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-18 21:15:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 21:15:52,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:52,369 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] [2020-08-18 21:15:52,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:52,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-18 21:15:52,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:52,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874407821] [2020-08-18 21:15:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:15:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:15:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:15:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:15:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:15:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:15:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:15:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:15:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:15:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:15:52,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874407821] [2020-08-18 21:15:52,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:15:52,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:15:52,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221301242] [2020-08-18 21:15:52,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:15:52,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:52,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:15:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:15:52,996 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-18 21:15:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:54,964 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-18 21:15:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:15:54,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-18 21:15:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:55,001 INFO L225 Difference]: With dead ends: 479 [2020-08-18 21:15:55,001 INFO L226 Difference]: Without dead ends: 340 [2020-08-18 21:15:55,007 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 [2020-08-18 21:15:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-18 21:15:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-18 21:15:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 21:15:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-18 21:15:55,094 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-18 21:15:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:55,095 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-18 21:15:55,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:15:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-18 21:15:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 21:15:55,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:55,099 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] [2020-08-18 21:15:55,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:15:55,100 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-18 21:15:55,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:55,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736104836] [2020-08-18 21:15:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:15:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:15:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:15:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:15:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:15:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:15:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:15:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:15:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:15:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:15:55,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736104836] [2020-08-18 21:15:55,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:15:55,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:15:55,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987499744] [2020-08-18 21:15:55,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:15:55,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:55,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:15:55,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:15:55,327 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-18 21:15:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:56,288 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-18 21:15:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:15:56,289 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-18 21:15:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:56,296 INFO L225 Difference]: With dead ends: 545 [2020-08-18 21:15:56,296 INFO L226 Difference]: Without dead ends: 331 [2020-08-18 21:15:56,301 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 [2020-08-18 21:15:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-18 21:15:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-18 21:15:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 21:15:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-18 21:15:56,382 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-18 21:15:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:56,382 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-18 21:15:56,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:15:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-18 21:15:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 21:15:56,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:56,391 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] [2020-08-18 21:15:56,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:15:56,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:56,392 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-18 21:15:56,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:56,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869519679] [2020-08-18 21:15:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:15:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:15:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:15:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:15:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:15:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:15:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:15:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:15:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:15:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:15:56,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869519679] [2020-08-18 21:15:56,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:15:56,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:15:56,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88360131] [2020-08-18 21:15:56,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:15:56,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:15:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:15:56,645 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-18 21:15:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:57,930 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-18 21:15:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:15:57,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-18 21:15:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:57,935 INFO L225 Difference]: With dead ends: 548 [2020-08-18 21:15:57,935 INFO L226 Difference]: Without dead ends: 335 [2020-08-18 21:15:57,936 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 [2020-08-18 21:15:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-18 21:15:57,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-18 21:15:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 21:15:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-18 21:15:57,967 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-18 21:15:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:57,968 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-18 21:15:57,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:15:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-18 21:15:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 21:15:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:57,970 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] [2020-08-18 21:15:57,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:15:57,970 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-18 21:15:57,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:57,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073312966] [2020-08-18 21:15:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:15:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:15:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:15:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:15:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:15:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:15:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:15:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:15:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:15:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:15:58,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073312966] [2020-08-18 21:15:58,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:15:58,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:15:58,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804386341] [2020-08-18 21:15:58,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:15:58,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:15:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:15:58,161 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-18 21:15:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:59,896 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-18 21:15:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:15:59,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-18 21:15:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:59,902 INFO L225 Difference]: With dead ends: 848 [2020-08-18 21:15:59,902 INFO L226 Difference]: Without dead ends: 630 [2020-08-18 21:15:59,905 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 [2020-08-18 21:15:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-18 21:15:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-18 21:15:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-18 21:15:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-18 21:15:59,977 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-18 21:15:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:59,979 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-18 21:15:59,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:15:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-18 21:15:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:15:59,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:59,985 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] [2020-08-18 21:15:59,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:15:59,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:59,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:59,986 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-18 21:15:59,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:59,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075889367] [2020-08-18 21:15:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:16:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:16:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:16:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:16:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:16:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:16:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:16:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:16:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:16:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:16:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:16:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:16:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 21:16:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 21:16:00,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075889367] [2020-08-18 21:16:00,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:16:00,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:16:00,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794062868] [2020-08-18 21:16:00,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:16:00,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:16:00,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:16:00,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:16:00,199 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-18 21:16:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:16:01,600 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-18 21:16:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:16:01,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 21:16:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:16:01,610 INFO L225 Difference]: With dead ends: 1125 [2020-08-18 21:16:01,610 INFO L226 Difference]: Without dead ends: 686 [2020-08-18 21:16:01,612 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 [2020-08-18 21:16:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-18 21:16:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-18 21:16:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-18 21:16:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-18 21:16:01,673 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-18 21:16:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:16:01,674 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-18 21:16:01,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:16:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-18 21:16:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:16:01,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:16:01,676 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] [2020-08-18 21:16:01,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:16:01,676 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:16:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:16:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-18 21:16:01,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:16:01,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479583952] [2020-08-18 21:16:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:16:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:16:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:16:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:16:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:16:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:16:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:16:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:16:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:16:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:16:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:16:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:16:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 21:16:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 21:16:01,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479583952] [2020-08-18 21:16:01,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:16:01,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:16:01,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836547399] [2020-08-18 21:16:01,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:16:01,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:16:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:16:01,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:16:01,872 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-18 21:16:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:16:03,592 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-18 21:16:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 21:16:03,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 21:16:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:16:03,599 INFO L225 Difference]: With dead ends: 1387 [2020-08-18 21:16:03,599 INFO L226 Difference]: Without dead ends: 859 [2020-08-18 21:16:03,602 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 [2020-08-18 21:16:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-18 21:16:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-18 21:16:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-18 21:16:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-18 21:16:03,675 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-18 21:16:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:16:03,676 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-18 21:16:03,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:16:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-18 21:16:03,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:16:03,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:16:03,678 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] [2020-08-18 21:16:03,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:16:03,678 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:16:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:16:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-18 21:16:03,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:16:03,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115716182] [2020-08-18 21:16:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:16:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:16:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:16:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:16:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:16:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:16:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:16:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:16:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:16:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:16:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:16:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:16:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 21:16:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 21:16:03,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115716182] [2020-08-18 21:16:03,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:16:03,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 21:16:03,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966856346] [2020-08-18 21:16:03,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:16:03,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:16:03,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:16:03,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:16:03,825 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-18 21:16:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:16:05,321 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-18 21:16:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:16:05,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 21:16:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:16:05,330 INFO L225 Difference]: With dead ends: 1930 [2020-08-18 21:16:05,330 INFO L226 Difference]: Without dead ends: 1304 [2020-08-18 21:16:05,334 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 [2020-08-18 21:16:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-18 21:16:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-18 21:16:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-18 21:16:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-18 21:16:05,423 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-18 21:16:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:16:05,424 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-18 21:16:05,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:16:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-18 21:16:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 21:16:05,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:16:05,426 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] [2020-08-18 21:16:05,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:16:05,427 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:16:05,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:16:05,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1157498048, now seen corresponding path program 1 times [2020-08-18 21:16:05,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:16:05,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533508534] [2020-08-18 21:16:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:16:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:16:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:16:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:16:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:16:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:16:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:16:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:16:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:16:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:16:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:16:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 21:16:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 21:16:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 21:16:05,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533508534] [2020-08-18 21:16:05,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:16:05,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:16:05,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915475973] [2020-08-18 21:16:05,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:16:05,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:16:05,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:16:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:16:05,585 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 9 states. [2020-08-18 21:16:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:16:06,633 INFO L93 Difference]: Finished difference Result 2356 states and 3058 transitions. [2020-08-18 21:16:06,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:16:06,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-08-18 21:16:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:16:06,642 INFO L225 Difference]: With dead ends: 2356 [2020-08-18 21:16:06,642 INFO L226 Difference]: Without dead ends: 1278 [2020-08-18 21:16:06,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:16:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-18 21:16:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1093. [2020-08-18 21:16:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-08-18 21:16:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1375 transitions. [2020-08-18 21:16:06,730 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1375 transitions. Word has length 95 [2020-08-18 21:16:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:16:06,730 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1375 transitions. [2020-08-18 21:16:06,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:16:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1375 transitions. [2020-08-18 21:16:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 21:16:06,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:16:06,732 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] [2020-08-18 21:16:06,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:16:06,733 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:16:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:16:06,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-18 21:16:06,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:16:06,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034015590] [2020-08-18 21:16:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:16:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:16:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:16:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:16:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:16:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:16:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 21:16:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:16:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:16:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:16:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 21:16:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 21:16:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 21:16:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:16:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 21:16:06,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034015590] [2020-08-18 21:16:06,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:16:06,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:16:06,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963053027] [2020-08-18 21:16:06,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:16:06,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:16:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:16:06,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:16:06,883 INFO L87 Difference]: Start difference. First operand 1093 states and 1375 transitions. Second operand 8 states. [2020-08-18 21:16:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:16:08,367 INFO L93 Difference]: Finished difference Result 3451 states and 4586 transitions. [2020-08-18 21:16:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:16:08,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-18 21:16:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:16:08,380 INFO L225 Difference]: With dead ends: 3451 [2020-08-18 21:16:08,380 INFO L226 Difference]: Without dead ends: 1835 [2020-08-18 21:16:08,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:16:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-18 21:16:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1483. [2020-08-18 21:16:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-08-18 21:16:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1810 transitions. [2020-08-18 21:16:08,525 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1810 transitions. Word has length 95 [2020-08-18 21:16:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:16:08,525 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 1810 transitions. [2020-08-18 21:16:08,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:16:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1810 transitions. [2020-08-18 21:16:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 21:16:08,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:16:08,529 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] [2020-08-18 21:16:08,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:16:08,530 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:16:08,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:16:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-18 21:16:08,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:16:08,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122478699] [2020-08-18 21:16:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:16:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:16:08,563 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:16:08,563 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:16:08,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:16:08,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:16:08 BoogieIcfgContainer [2020-08-18 21:16:08,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:16:08,615 INFO L168 Benchmark]: Toolchain (without parser) took 17377.47 ms. Allocated memory was 143.7 MB in the beginning and 410.5 MB in the end (delta: 266.9 MB). Free memory was 104.3 MB in the beginning and 249.0 MB in the end (delta: -144.7 MB). Peak memory consumption was 122.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:16:08,616 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 21:16:08,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.41 ms. Allocated memory is still 143.7 MB. Free memory was 103.9 MB in the beginning and 90.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:16:08,617 INFO L168 Benchmark]: Boogie Preprocessor took 134.60 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 90.8 MB in the beginning and 181.8 MB in the end (delta: -91.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:16:08,618 INFO L168 Benchmark]: RCFGBuilder took 534.62 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 151.8 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:16:08,619 INFO L168 Benchmark]: TraceAbstraction took 16358.64 ms. Allocated memory was 204.5 MB in the beginning and 410.5 MB in the end (delta: 206.0 MB). Free memory was 151.1 MB in the beginning and 249.0 MB in the end (delta: -97.9 MB). Peak memory consumption was 108.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:16:08,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.41 ms. Allocated memory is still 143.7 MB. Free memory was 103.9 MB in the beginning and 90.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.60 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 90.8 MB in the beginning and 181.8 MB in the end (delta: -91.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 534.62 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 151.8 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16358.64 ms. Allocated memory was 204.5 MB in the beginning and 410.5 MB in the end (delta: 206.0 MB). Free memory was 151.1 MB in the beginning and 249.0 MB in the end (delta: -97.9 MB). Peak memory consumption was 108.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1235 SDtfs, 4705 SDslu, 492 SDs, 0 SdLazy, 8018 SolverSat, 2850 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 1566 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 898 NumberOfCodeBlocks, 898 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 138936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 69/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...