/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:18:22,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:18:22,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:18:22,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:18:22,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:18:22,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:18:22,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:18:22,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:18:22,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:18:22,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:18:22,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:18:22,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:18:22,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:18:22,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:18:22,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:18:22,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:18:22,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:18:22,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:18:22,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:18:22,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:18:22,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:18:22,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:18:22,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:18:22,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:18:22,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:18:22,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:18:22,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:18:22,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:18:22,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:18:22,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:18:22,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:18:22,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:18:22,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:18:22,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:18:22,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:18:22,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:18:22,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:18:22,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:18:22,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:18:22,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:18:22,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:18:22,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:18:22,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:18:22,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:18:22,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:18:22,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:18:22,137 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:18:22,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:18:22,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:18:22,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:18:22,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:18:22,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:18:22,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:18:22,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:18:22,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:18:22,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:18:22,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:18:22,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:18:22,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:18:22,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:18:22,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:18:22,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:18:22,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:18:22,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:18:22,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:18:22,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:18:22,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:18:22,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:18:22,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:18:22,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:18:22,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:18:22,142 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:18:22,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:18:22,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:18:22,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:18:22,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:18:22,477 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:18:22,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 01:18:22,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c7b4352/a929207c50be464aa6030bd2d94aa52c/FLAG137a6e859 [2020-08-19 01:18:23,095 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:18:23,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 01:18:23,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c7b4352/a929207c50be464aa6030bd2d94aa52c/FLAG137a6e859 [2020-08-19 01:18:23,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c7b4352/a929207c50be464aa6030bd2d94aa52c [2020-08-19 01:18:23,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:18:23,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:18:23,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:18:23,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:18:23,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:18:23,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23, skipping insertion in model container [2020-08-19 01:18:23,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:18:23,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:18:23,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:18:23,719 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:18:23,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:18:23,920 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:18:23,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23 WrapperNode [2020-08-19 01:18:23,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:18:23,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:18:23,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:18:23,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:18:23,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:18:23,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:18:23,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:18:23,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:18:23,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:18:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:18:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:18:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-19 01:18:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-19 01:18:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-19 01:18:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-19 01:18:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-19 01:18:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-19 01:18:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-19 01:18:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-19 01:18:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-19 01:18:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-19 01:18:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-19 01:18:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-19 01:18:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-19 01:18:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-19 01:18:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-19 01:18:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-19 01:18:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-19 01:18:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-19 01:18:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:18:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:18:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:18:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-19 01:18:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-19 01:18:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-19 01:18:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-19 01:18:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-19 01:18:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-19 01:18:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-19 01:18:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-19 01:18:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-19 01:18:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-19 01:18:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-19 01:18:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-19 01:18:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:18:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:18:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:18:24,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:18:24,529 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:18:24,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:18:24 BoogieIcfgContainer [2020-08-19 01:18:24,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:18:24,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:18:24,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:18:24,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:18:24,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:18:23" (1/3) ... [2020-08-19 01:18:24,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2eb80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:18:24, skipping insertion in model container [2020-08-19 01:18:24,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (2/3) ... [2020-08-19 01:18:24,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2eb80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:18:24, skipping insertion in model container [2020-08-19 01:18:24,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:18:24" (3/3) ... [2020-08-19 01:18:24,544 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-19 01:18:24,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:18:24,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:18:24,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:18:24,609 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:18:24,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:18:24,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:18:24,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:18:24,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:18:24,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:18:24,611 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:18:24,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:18:24,637 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-19 01:18:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 01:18:24,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:24,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:24,652 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:24,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-19 01:18:24,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:24,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635439392] [2020-08-19 01:18:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:25,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635439392] [2020-08-19 01:18:25,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:25,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:18:25,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651997451] [2020-08-19 01:18:25,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:25,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:25,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:25,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:25,274 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-19 01:18:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:27,251 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-19 01:18:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:18:27,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 01:18:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:27,270 INFO L225 Difference]: With dead ends: 479 [2020-08-19 01:18:27,271 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 01:18:27,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:18:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 01:18:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-19 01:18:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 01:18:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-19 01:18:27,373 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-19 01:18:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:27,374 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-19 01:18:27,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-19 01:18:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 01:18:27,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:27,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:27,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:18:27,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:27,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-19 01:18:27,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:27,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603496615] [2020-08-19 01:18:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:27,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603496615] [2020-08-19 01:18:27,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:27,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:27,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294898793] [2020-08-19 01:18:27,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:27,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:27,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:27,580 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-19 01:18:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:28,642 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-19 01:18:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:18:28,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 01:18:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:28,655 INFO L225 Difference]: With dead ends: 545 [2020-08-19 01:18:28,655 INFO L226 Difference]: Without dead ends: 331 [2020-08-19 01:18:28,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:18:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-19 01:18:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-19 01:18:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 01:18:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-19 01:18:28,743 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-19 01:18:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:28,743 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-19 01:18:28,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-19 01:18:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 01:18:28,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:28,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:28,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:18:28,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-19 01:18:28,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:28,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773197700] [2020-08-19 01:18:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:28,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773197700] [2020-08-19 01:18:28,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:28,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:28,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204172322] [2020-08-19 01:18:28,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:28,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:28,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:28,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:28,953 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-19 01:18:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:30,243 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-19 01:18:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:18:30,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 01:18:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:30,248 INFO L225 Difference]: With dead ends: 548 [2020-08-19 01:18:30,248 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 01:18:30,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:18:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 01:18:30,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-19 01:18:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 01:18:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-19 01:18:30,285 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-19 01:18:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:30,285 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-19 01:18:30,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-19 01:18:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 01:18:30,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:30,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:30,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:18:30,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:30,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-19 01:18:30,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:30,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755986128] [2020-08-19 01:18:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:30,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755986128] [2020-08-19 01:18:30,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:30,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:18:30,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256811043] [2020-08-19 01:18:30,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:30,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:30,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:30,448 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-19 01:18:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:32,122 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-19 01:18:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:18:32,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 01:18:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:32,132 INFO L225 Difference]: With dead ends: 848 [2020-08-19 01:18:32,133 INFO L226 Difference]: Without dead ends: 630 [2020-08-19 01:18:32,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:18:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-19 01:18:32,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-19 01:18:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-19 01:18:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-19 01:18:32,190 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-19 01:18:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:32,190 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-19 01:18:32,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-19 01:18:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:18:32,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:32,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:32,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:18:32,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-19 01:18:32,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:32,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098606104] [2020-08-19 01:18:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:18:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:18:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:18:32,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098606104] [2020-08-19 01:18:32,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:32,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:18:32,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630903639] [2020-08-19 01:18:32,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:18:32,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:32,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:18:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:18:32,423 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-19 01:18:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:33,802 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-19 01:18:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:18:33,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 01:18:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:33,808 INFO L225 Difference]: With dead ends: 1125 [2020-08-19 01:18:33,808 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 01:18:33,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:18:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 01:18:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-19 01:18:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-19 01:18:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-19 01:18:33,862 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-19 01:18:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:33,862 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-19 01:18:33,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:18:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-19 01:18:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:18:33,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:33,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:33,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:18:33,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-19 01:18:33,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:33,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314844650] [2020-08-19 01:18:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:18:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:34,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:18:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:18:34,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314844650] [2020-08-19 01:18:34,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:34,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:18:34,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314014074] [2020-08-19 01:18:34,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:18:34,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:34,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:18:34,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:18:34,035 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-19 01:18:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:35,657 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-19 01:18:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:18:35,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 01:18:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:35,664 INFO L225 Difference]: With dead ends: 1387 [2020-08-19 01:18:35,664 INFO L226 Difference]: Without dead ends: 859 [2020-08-19 01:18:35,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:18:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-19 01:18:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-19 01:18:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-19 01:18:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-19 01:18:35,722 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-19 01:18:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:35,723 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-19 01:18:35,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:18:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-19 01:18:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:18:35,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:35,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:35,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:18:35,725 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-19 01:18:35,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:35,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349067167] [2020-08-19 01:18:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:18:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:18:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 01:18:35,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349067167] [2020-08-19 01:18:35,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:18:35,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 01:18:35,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584515352] [2020-08-19 01:18:35,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:18:35,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:35,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:18:35,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:18:35,848 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-19 01:18:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:37,402 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-19 01:18:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:18:37,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 01:18:37,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:37,412 INFO L225 Difference]: With dead ends: 1930 [2020-08-19 01:18:37,412 INFO L226 Difference]: Without dead ends: 1304 [2020-08-19 01:18:37,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:18:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-19 01:18:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-19 01:18:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-19 01:18:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-19 01:18:37,545 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-19 01:18:37,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:37,547 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-19 01:18:37,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:18:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-19 01:18:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 01:18:37,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:37,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:37,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:18:37,552 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:37,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-19 01:18:37,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:37,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306444455] [2020-08-19 01:18:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:18:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:18:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:18:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 01:18:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:18:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 01:18:37,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306444455] [2020-08-19 01:18:37,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:37,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:18:37,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449911220] [2020-08-19 01:18:37,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:18:37,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:37,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:18:37,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:18:37,711 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-19 01:18:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:39,201 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-19 01:18:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:18:39,203 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-19 01:18:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:39,218 INFO L225 Difference]: With dead ends: 3462 [2020-08-19 01:18:39,219 INFO L226 Difference]: Without dead ends: 1841 [2020-08-19 01:18:39,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:18:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-19 01:18:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-19 01:18:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-19 01:18:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-19 01:18:39,350 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-19 01:18:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:39,351 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-19 01:18:39,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:18:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-19 01:18:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-19 01:18:39,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:39,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:39,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:18:39,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:39,359 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-19 01:18:39,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:39,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542864292] [2020-08-19 01:18:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:18:39,419 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:18:39,420 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:18:39,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:18:39,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:18:39 BoogieIcfgContainer [2020-08-19 01:18:39,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:18:39,484 INFO L168 Benchmark]: Toolchain (without parser) took 16053.48 ms. Allocated memory was 144.2 MB in the beginning and 374.3 MB in the end (delta: 230.2 MB). Free memory was 107.5 MB in the beginning and 336.2 MB in the end (delta: -228.7 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:39,485 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.2 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:18:39,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.33 ms. Allocated memory was 144.2 MB in the beginning and 207.1 MB in the end (delta: 62.9 MB). Free memory was 107.3 MB in the beginning and 185.7 MB in the end (delta: -78.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:39,487 INFO L168 Benchmark]: Boogie Preprocessor took 50.75 ms. Allocated memory is still 207.1 MB. Free memory was 185.7 MB in the beginning and 183.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:39,488 INFO L168 Benchmark]: RCFGBuilder took 562.55 ms. Allocated memory is still 207.1 MB. Free memory was 183.5 MB in the beginning and 153.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:39,491 INFO L168 Benchmark]: TraceAbstraction took 14938.40 ms. Allocated memory was 207.1 MB in the beginning and 374.3 MB in the end (delta: 167.2 MB). Free memory was 152.9 MB in the beginning and 336.2 MB in the end (delta: -183.3 MB). Peak memory consumption was 204.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:39,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.2 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 495.33 ms. Allocated memory was 144.2 MB in the beginning and 207.1 MB in the end (delta: 62.9 MB). Free memory was 107.3 MB in the beginning and 185.7 MB in the end (delta: -78.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.75 ms. Allocated memory is still 207.1 MB. Free memory was 185.7 MB in the beginning and 183.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 562.55 ms. Allocated memory is still 207.1 MB. Free memory was 183.5 MB in the beginning and 153.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14938.40 ms. Allocated memory was 207.1 MB in the beginning and 374.3 MB in the end (delta: 167.2 MB). Free memory was 152.9 MB in the beginning and 336.2 MB in the end (delta: -183.3 MB). Peak memory consumption was 204.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7377 SolverSat, 2606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1489occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1381 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 803 NumberOfCodeBlocks, 803 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 666 ConstructedInterpolants, 0 QuantifiedInterpolants, 121640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...