/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 13:05:56,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:05:56,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:05:56,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:05:56,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:05:56,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:05:56,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:05:56,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:05:56,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:05:56,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:05:56,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:05:56,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:05:56,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:05:56,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:05:56,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:05:56,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:05:56,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:05:56,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:05:56,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:05:56,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:05:56,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:05:56,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:05:56,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:05:56,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:05:56,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:05:56,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:05:56,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:05:56,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:05:56,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:05:56,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 13:05:56,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 13:05:56,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 13:05:56,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 13:05:56,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 13:05:56,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 13:05:56,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 13:05:56,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 13:05:56,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 13:05:56,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:05:56,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:05:56,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:05:56,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 13:05:56,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:05:56,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:05:56,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:05:56,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:05:56,947 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:05:56,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:05:56,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 13:05:56,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:05:56,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 13:05:56,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:05:56,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:05:56,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:05:56,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:05:56,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 13:05:56,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:05:56,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:05:56,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:05:56,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:05:56,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:05:56,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:05:56,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:05:56,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:05:56,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:05:56,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:05:56,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:05:56,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:05:56,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:05:56,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:05:56,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:05:56,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:05:57,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:05:57,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:05:57,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:05:57,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:05:57,291 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:05:57,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-18 13:05:57,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d21cc6c3/0fcba95af6de46bd805982dddb7b93e0/FLAG3aa9f76c2 [2020-08-18 13:05:57,830 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:05:57,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-18 13:05:57,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d21cc6c3/0fcba95af6de46bd805982dddb7b93e0/FLAG3aa9f76c2 [2020-08-18 13:05:58,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d21cc6c3/0fcba95af6de46bd805982dddb7b93e0 [2020-08-18 13:05:58,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:05:58,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:05:58,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:05:58,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:05:58,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:05:58,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cadddbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58, skipping insertion in model container [2020-08-18 13:05:58,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:05:58,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:05:58,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:05:58,472 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:05:58,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:05:58,538 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:05:58,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58 WrapperNode [2020-08-18 13:05:58,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:05:58,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:05:58,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:05:58,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:05:58,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... [2020-08-18 13:05:58,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:05:58,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:05:58,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:05:58,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:05:58,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:05:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:05:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 13:05:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 13:05:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 13:05:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 13:05:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 13:05:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 13:05:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 13:05:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 13:05:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 13:05:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 13:05:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 13:05:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 13:05:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 13:05:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 13:05:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 13:05:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 13:05:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 13:05:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 13:05:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:05:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:05:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 13:05:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 13:05:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 13:05:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 13:05:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 13:05:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 13:05:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 13:05:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 13:05:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 13:05:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 13:05:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 13:05:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 13:05:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 13:05:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:05:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:05:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:05:59,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:05:59,201 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 13:05:59,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:05:59 BoogieIcfgContainer [2020-08-18 13:05:59,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:05:59,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:05:59,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:05:59,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:05:59,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:05:58" (1/3) ... [2020-08-18 13:05:59,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7a5e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:05:59, skipping insertion in model container [2020-08-18 13:05:59,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:05:58" (2/3) ... [2020-08-18 13:05:59,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7a5e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:05:59, skipping insertion in model container [2020-08-18 13:05:59,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:05:59" (3/3) ... [2020-08-18 13:05:59,223 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-18 13:05:59,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:05:59,249 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:05:59,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:05:59,292 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:05:59,292 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:05:59,292 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:05:59,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:05:59,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:05:59,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:05:59,293 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:05:59,293 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:05:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-18 13:05:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 13:05:59,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:05:59,333 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 13:05:59,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:05:59,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:05:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-18 13:05:59,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:05:59,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088391470] [2020-08-18 13:05:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:05:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:05:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:05:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:05:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:05:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:05:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:05:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:05:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:05:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:05:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:05:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:05:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:05:59,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088391470] [2020-08-18 13:05:59,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:05:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:05:59,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289730317] [2020-08-18 13:05:59,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:05:59,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:05:59,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:05:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:05:59,952 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-18 13:06:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:01,839 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-18 13:06:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 13:06:01,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-18 13:06:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:01,859 INFO L225 Difference]: With dead ends: 479 [2020-08-18 13:06:01,859 INFO L226 Difference]: Without dead ends: 340 [2020-08-18 13:06:01,865 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 13:06:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-18 13:06:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-18 13:06:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 13:06:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-18 13:06:01,962 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-18 13:06:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:01,963 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-18 13:06:01,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:06:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-18 13:06:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 13:06:01,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:01,975 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 13:06:01,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:06:01,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-18 13:06:01,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:01,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119979679] [2020-08-18 13:06:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:02,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119979679] [2020-08-18 13:06:02,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:02,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:06:02,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224146195] [2020-08-18 13:06:02,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:06:02,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:06:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:06:02,172 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-18 13:06:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:03,188 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-18 13:06:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:06:03,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-18 13:06:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:03,193 INFO L225 Difference]: With dead ends: 545 [2020-08-18 13:06:03,193 INFO L226 Difference]: Without dead ends: 331 [2020-08-18 13:06:03,196 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 13:06:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-18 13:06:03,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-18 13:06:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 13:06:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-18 13:06:03,245 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-18 13:06:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:03,245 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-18 13:06:03,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:06:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-18 13:06:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 13:06:03,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:03,248 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 13:06:03,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:06:03,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-18 13:06:03,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:03,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628442298] [2020-08-18 13:06:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:03,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628442298] [2020-08-18 13:06:03,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:03,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:06:03,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490038246] [2020-08-18 13:06:03,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:06:03,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:03,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:06:03,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:06:03,426 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-18 13:06:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:04,738 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-18 13:06:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:06:04,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-18 13:06:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:04,743 INFO L225 Difference]: With dead ends: 548 [2020-08-18 13:06:04,743 INFO L226 Difference]: Without dead ends: 335 [2020-08-18 13:06:04,745 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 13:06:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-18 13:06:04,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-18 13:06:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 13:06:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-18 13:06:04,784 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-18 13:06:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:04,785 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-18 13:06:04,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:06:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-18 13:06:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 13:06:04,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:04,787 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 13:06:04,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:06:04,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-18 13:06:04,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:04,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789097326] [2020-08-18 13:06:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:04,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789097326] [2020-08-18 13:06:04,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:04,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:06:04,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262686826] [2020-08-18 13:06:04,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:06:04,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:04,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:06:04,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:06:04,977 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-18 13:06:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:06,580 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-18 13:06:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 13:06:06,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-18 13:06:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:06,586 INFO L225 Difference]: With dead ends: 848 [2020-08-18 13:06:06,586 INFO L226 Difference]: Without dead ends: 630 [2020-08-18 13:06:06,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 13:06:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-18 13:06:06,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-18 13:06:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-18 13:06:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-18 13:06:06,641 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-18 13:06:06,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:06,642 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-18 13:06:06,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:06:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-18 13:06:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 13:06:06,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:06,645 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 13:06:06,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:06:06,645 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-18 13:06:06,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:06,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623091297] [2020-08-18 13:06:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:06:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 13:06:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:06,875 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 13:06:06,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623091297] [2020-08-18 13:06:06,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:06,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 13:06:06,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381213622] [2020-08-18 13:06:06,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 13:06:06,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:06,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 13:06:06,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 13:06:06,879 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-18 13:06:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:08,308 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-18 13:06:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 13:06:08,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 13:06:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:08,317 INFO L225 Difference]: With dead ends: 1125 [2020-08-18 13:06:08,317 INFO L226 Difference]: Without dead ends: 686 [2020-08-18 13:06:08,319 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 13:06:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-18 13:06:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-18 13:06:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-18 13:06:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-18 13:06:08,383 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-18 13:06:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:08,384 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-18 13:06:08,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 13:06:08,384 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-18 13:06:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 13:06:08,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:08,389 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 13:06:08,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:06:08,389 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-18 13:06:08,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:08,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036186240] [2020-08-18 13:06:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:06:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 13:06:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:08,578 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 13:06:08,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036186240] [2020-08-18 13:06:08,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:08,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 13:06:08,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129357502] [2020-08-18 13:06:08,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 13:06:08,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:08,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 13:06:08,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 13:06:08,585 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-18 13:06:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:10,181 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-18 13:06:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 13:06:10,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 13:06:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:10,189 INFO L225 Difference]: With dead ends: 1387 [2020-08-18 13:06:10,189 INFO L226 Difference]: Without dead ends: 859 [2020-08-18 13:06:10,192 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 13:06:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-18 13:06:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-18 13:06:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-18 13:06:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-18 13:06:10,279 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-18 13:06:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:10,280 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-18 13:06:10,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 13:06:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-18 13:06:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 13:06:10,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:10,283 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 13:06:10,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:06:10,284 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-18 13:06:10,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:10,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050351355] [2020-08-18 13:06:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:06:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 13:06:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:10,468 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 13:06:10,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050351355] [2020-08-18 13:06:10,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:06:10,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 13:06:10,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134776183] [2020-08-18 13:06:10,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:06:10,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:06:10,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:06:10,474 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-18 13:06:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:12,092 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-18 13:06:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 13:06:12,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 13:06:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:12,105 INFO L225 Difference]: With dead ends: 1930 [2020-08-18 13:06:12,106 INFO L226 Difference]: Without dead ends: 1304 [2020-08-18 13:06:12,110 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 13:06:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-18 13:06:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-18 13:06:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-18 13:06:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-18 13:06:12,222 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-18 13:06:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:12,223 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-18 13:06:12,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:06:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-18 13:06:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 13:06:12,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:12,226 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 13:06:12,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:06:12,227 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1157498048, now seen corresponding path program 1 times [2020-08-18 13:06:12,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:12,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754643513] [2020-08-18 13:06:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 13:06:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:12,375 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 13:06:12,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754643513] [2020-08-18 13:06:12,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:12,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:06:12,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331492498] [2020-08-18 13:06:12,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:06:12,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:12,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:06:12,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:06:12,378 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 9 states. [2020-08-18 13:06:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:13,348 INFO L93 Difference]: Finished difference Result 2356 states and 3058 transitions. [2020-08-18 13:06:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:06:13,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-08-18 13:06:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:13,361 INFO L225 Difference]: With dead ends: 2356 [2020-08-18 13:06:13,361 INFO L226 Difference]: Without dead ends: 1278 [2020-08-18 13:06:13,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-18 13:06:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-18 13:06:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1093. [2020-08-18 13:06:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-08-18 13:06:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1375 transitions. [2020-08-18 13:06:13,487 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1375 transitions. Word has length 95 [2020-08-18 13:06:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:13,487 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1375 transitions. [2020-08-18 13:06:13,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:06:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1375 transitions. [2020-08-18 13:06:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 13:06:13,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:13,492 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 13:06:13,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 13:06:13,493 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:13,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:13,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-18 13:06:13,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:13,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013265863] [2020-08-18 13:06:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:06:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:06:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:06:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:06:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 13:06:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:06:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 13:06:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 13:06:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,641 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 13:06:13,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013265863] [2020-08-18 13:06:13,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:13,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 13:06:13,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234309265] [2020-08-18 13:06:13,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:06:13,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:13,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:06:13,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:06:13,649 INFO L87 Difference]: Start difference. First operand 1093 states and 1375 transitions. Second operand 8 states. [2020-08-18 13:06:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:15,131 INFO L93 Difference]: Finished difference Result 3451 states and 4586 transitions. [2020-08-18 13:06:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 13:06:15,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-18 13:06:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:15,144 INFO L225 Difference]: With dead ends: 3451 [2020-08-18 13:06:15,145 INFO L226 Difference]: Without dead ends: 1835 [2020-08-18 13:06:15,152 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 13:06:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-18 13:06:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1483. [2020-08-18 13:06:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-08-18 13:06:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1810 transitions. [2020-08-18 13:06:15,276 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1810 transitions. Word has length 95 [2020-08-18 13:06:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:15,277 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 1810 transitions. [2020-08-18 13:06:15,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:06:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1810 transitions. [2020-08-18 13:06:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 13:06:15,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:15,283 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 13:06:15,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 13:06:15,283 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:15,284 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-18 13:06:15,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:15,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768202670] [2020-08-18 13:06:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 13:06:15,322 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 13:06:15,322 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 13:06:15,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 13:06:15,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 01:06:15 BoogieIcfgContainer [2020-08-18 13:06:15,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 13:06:15,380 INFO L168 Benchmark]: Toolchain (without parser) took 17192.32 ms. Allocated memory was 141.0 MB in the beginning and 432.5 MB in the end (delta: 291.5 MB). Free memory was 103.2 MB in the beginning and 196.9 MB in the end (delta: -93.7 MB). Peak memory consumption was 197.8 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:15,381 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 13:06:15,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.18 ms. Allocated memory is still 141.0 MB. Free memory was 102.8 MB in the beginning and 89.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:15,385 INFO L168 Benchmark]: Boogie Preprocessor took 124.91 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 89.8 MB in the beginning and 180.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:15,386 INFO L168 Benchmark]: RCFGBuilder took 547.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 150.0 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:15,390 INFO L168 Benchmark]: TraceAbstraction took 16162.67 ms. Allocated memory was 202.9 MB in the beginning and 432.5 MB in the end (delta: 229.6 MB). Free memory was 149.3 MB in the beginning and 196.9 MB in the end (delta: -47.6 MB). Peak memory consumption was 182.0 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:15,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.18 ms. Allocated memory is still 141.0 MB. Free memory was 102.8 MB in the beginning and 89.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.91 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 89.8 MB in the beginning and 180.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 547.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 150.0 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16162.67 ms. Allocated memory was 202.9 MB in the beginning and 432.5 MB in the end (delta: 229.6 MB). Free memory was 149.3 MB in the beginning and 196.9 MB in the end (delta: -47.6 MB). Peak memory consumption was 182.0 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: 16.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1235 SDtfs, 4705 SDslu, 492 SDs, 0 SdLazy, 8013 SolverSat, 2849 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1566 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s 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...