/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -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 06:09:30,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:09:30,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:09:30,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:09:30,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:09:30,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:09:30,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:09:30,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:09:30,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:09:30,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:09:30,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:09:30,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:09:30,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:09:30,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:09:30,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:09:30,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:09:30,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:09:30,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:09:30,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:09:30,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:09:30,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:09:30,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:09:30,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:09:30,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:09:30,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:09:30,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:09:30,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:09:30,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:09:30,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:09:30,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:09:30,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:09:30,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:09:30,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:09:30,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:09:30,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:09:30,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:09:30,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:09:30,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:09:30,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:09:30,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:09:30,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:09:30,374 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 06:09:30,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:09:30,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:09:30,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:09:30,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:09:30,409 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:09:30,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:09:30,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:09:30,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:09:30,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:09:30,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:09:30,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:09:30,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:09:30,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:09:30,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:09:30,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:09:30,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:09:30,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:09:30,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:09:30,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:09:30,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:09:30,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:09:30,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:09:30,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:09:30,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:09:30,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:09:30,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:09:30,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:09:30,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:09:30,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:09:30,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:09:30,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:09:30,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:09:30,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:09:30,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:09:30,755 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:09:30,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 06:09:30,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d842cc1aa/f8ed1383843249f99fec25c302baae7b/FLAGf6af06d36 [2020-08-19 06:09:31,278 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:09:31,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 06:09:31,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d842cc1aa/f8ed1383843249f99fec25c302baae7b/FLAGf6af06d36 [2020-08-19 06:09:31,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d842cc1aa/f8ed1383843249f99fec25c302baae7b [2020-08-19 06:09:31,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:09:31,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:09:31,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:31,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:09:31,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:09:31,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:31" (1/1) ... [2020-08-19 06:09:31,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:31, skipping insertion in model container [2020-08-19 06:09:31,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:31" (1/1) ... [2020-08-19 06:09:31,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:09:31,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:09:31,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:31,930 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:09:31,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:32,081 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:09:32,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32 WrapperNode [2020-08-19 06:09:32,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:32,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:09:32,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:09:32,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:09:32,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (1/1) ... [2020-08-19 06:09:32,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:09:32,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:09:32,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:09:32,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:09:32,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (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 06:09:32,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-19 06:09:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-19 06:09:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-19 06:09:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-19 06:09:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-19 06:09:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-19 06:09:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-19 06:09:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-19 06:09:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-19 06:09:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-19 06:09:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-19 06:09:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-19 06:09:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-19 06:09:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-19 06:09:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:09:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:09:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:09:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-19 06:09:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-19 06:09:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-19 06:09:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-19 06:09:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-19 06:09:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-19 06:09:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-19 06:09:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-19 06:09:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-19 06:09:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-19 06:09:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-19 06:09:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-19 06:09:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:09:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:09:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:09:32,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:09:32,662 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:09:32,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:32 BoogieIcfgContainer [2020-08-19 06:09:32,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:09:32,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:09:32,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:09:32,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:09:32,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:09:31" (1/3) ... [2020-08-19 06:09:32,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afc9e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:32, skipping insertion in model container [2020-08-19 06:09:32,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:32" (2/3) ... [2020-08-19 06:09:32,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afc9e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:32, skipping insertion in model container [2020-08-19 06:09:32,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:32" (3/3) ... [2020-08-19 06:09:32,676 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-19 06:09:32,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:09:32,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:09:32,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:09:32,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:09:32,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:09:32,729 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:09:32,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:09:32,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:09:32,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:09:32,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:09:32,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:09:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-19 06:09:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:09:32,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:32,769 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 06:09:32,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:32,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-19 06:09:32,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:32,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970446238] [2020-08-19 06:09:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:33,314 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 06:09:33,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970446238] [2020-08-19 06:09:33,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:33,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:09:33,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814471199] [2020-08-19 06:09:33,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:09:33,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:33,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:09:33,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:33,344 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-19 06:09:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:35,253 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-19 06:09:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:09:35,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 06:09:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:35,273 INFO L225 Difference]: With dead ends: 479 [2020-08-19 06:09:35,273 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 06:09:35,279 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 06:09:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 06:09:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-19 06:09:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 06:09:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-19 06:09:35,372 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-19 06:09:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:35,373 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-19 06:09:35,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:09:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-19 06:09:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:09:35,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:35,379 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 06:09:35,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:09:35,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-19 06:09:35,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:35,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047518911] [2020-08-19 06:09:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:35,591 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 06:09:35,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047518911] [2020-08-19 06:09:35,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:35,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:09:35,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523700428] [2020-08-19 06:09:35,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:09:35,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:35,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:09:35,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:09:35,596 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-19 06:09:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:36,593 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-19 06:09:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:09:36,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 06:09:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:36,599 INFO L225 Difference]: With dead ends: 545 [2020-08-19 06:09:36,600 INFO L226 Difference]: Without dead ends: 331 [2020-08-19 06:09:36,602 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 06:09:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-19 06:09:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-19 06:09:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 06:09:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-19 06:09:36,647 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-19 06:09:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:36,648 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-19 06:09:36,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:09:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-19 06:09:36,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:09:36,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:36,651 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 06:09:36,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:09:36,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-19 06:09:36,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:36,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534750440] [2020-08-19 06:09:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:36,823 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 06:09:36,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534750440] [2020-08-19 06:09:36,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:36,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:09:36,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709165122] [2020-08-19 06:09:36,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:09:36,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:09:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:09:36,826 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-19 06:09:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:38,112 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-19 06:09:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:09:38,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 06:09:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:38,124 INFO L225 Difference]: With dead ends: 548 [2020-08-19 06:09:38,126 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 06:09:38,128 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 06:09:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 06:09:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-19 06:09:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 06:09:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-19 06:09:38,182 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-19 06:09:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:38,183 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-19 06:09:38,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:09:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-19 06:09:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:09:38,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:38,185 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 06:09:38,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:09:38,186 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:38,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-19 06:09:38,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:38,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536351556] [2020-08-19 06:09:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:38,342 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 06:09:38,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536351556] [2020-08-19 06:09:38,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:38,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:09:38,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940775320] [2020-08-19 06:09:38,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:09:38,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:38,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:09:38,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:38,345 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-19 06:09:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:40,014 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-19 06:09:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:09:40,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 06:09:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:40,021 INFO L225 Difference]: With dead ends: 848 [2020-08-19 06:09:40,021 INFO L226 Difference]: Without dead ends: 630 [2020-08-19 06:09:40,023 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 06:09:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-19 06:09:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-19 06:09:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-19 06:09:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-19 06:09:40,092 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-19 06:09:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:40,092 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-19 06:09:40,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:09:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-19 06:09:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:09:40,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:40,095 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 06:09:40,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:09:40,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-19 06:09:40,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:40,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408747088] [2020-08-19 06:09:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:09:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:09:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:40,298 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 06:09:40,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408747088] [2020-08-19 06:09:40,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:40,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:09:40,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701483110] [2020-08-19 06:09:40,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:09:40,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:40,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:09:40,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:09:40,301 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-19 06:09:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:41,706 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-19 06:09:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:09:41,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 06:09:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:41,717 INFO L225 Difference]: With dead ends: 1125 [2020-08-19 06:09:41,717 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 06:09:41,721 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 06:09:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 06:09:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-19 06:09:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-19 06:09:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-19 06:09:41,807 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-19 06:09:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:41,808 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-19 06:09:41,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:09:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-19 06:09:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:09:41,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:41,814 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 06:09:41,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:09:41,815 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:41,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:41,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-19 06:09:41,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:41,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28353043] [2020-08-19 06:09:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:09:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:09:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,007 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 06:09:42,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28353043] [2020-08-19 06:09:42,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:42,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:09:42,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050404495] [2020-08-19 06:09:42,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:09:42,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:09:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:09:42,018 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-19 06:09:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:43,635 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-19 06:09:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 06:09:43,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 06:09:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:43,641 INFO L225 Difference]: With dead ends: 1387 [2020-08-19 06:09:43,641 INFO L226 Difference]: Without dead ends: 859 [2020-08-19 06:09:43,644 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 06:09:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-19 06:09:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-19 06:09:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-19 06:09:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-19 06:09:43,751 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-19 06:09:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:43,752 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-19 06:09:43,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:09:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-19 06:09:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:09:43,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:43,755 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 06:09:43,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:09:43,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-19 06:09:43,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:43,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167432059] [2020-08-19 06:09:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:09:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:09:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:43,878 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 06:09:43,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167432059] [2020-08-19 06:09:43,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:43,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 06:09:43,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145838447] [2020-08-19 06:09:43,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:09:43,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:43,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:09:43,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:09:43,883 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-19 06:09:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:45,451 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-19 06:09:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:09:45,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 06:09:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:45,465 INFO L225 Difference]: With dead ends: 1930 [2020-08-19 06:09:45,465 INFO L226 Difference]: Without dead ends: 1304 [2020-08-19 06:09:45,469 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 06:09:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-19 06:09:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-19 06:09:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-19 06:09:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-19 06:09:45,568 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-19 06:09:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:45,568 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-19 06:09:45,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:09:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-19 06:09:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 06:09:45,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:45,571 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 06:09:45,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:09:45,572 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:45,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1157498048, now seen corresponding path program 1 times [2020-08-19 06:09:45,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:45,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450760412] [2020-08-19 06:09:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:09:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:09:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 06:09:45,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450760412] [2020-08-19 06:09:45,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:09:45,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872975886] [2020-08-19 06:09:45,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:09:45,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:09:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:45,731 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 9 states. [2020-08-19 06:09:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:46,820 INFO L93 Difference]: Finished difference Result 2356 states and 3058 transitions. [2020-08-19 06:09:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:09:46,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-08-19 06:09:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:46,834 INFO L225 Difference]: With dead ends: 2356 [2020-08-19 06:09:46,834 INFO L226 Difference]: Without dead ends: 1278 [2020-08-19 06:09:46,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-19 06:09:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-19 06:09:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1093. [2020-08-19 06:09:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-08-19 06:09:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1375 transitions. [2020-08-19 06:09:46,928 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1375 transitions. Word has length 95 [2020-08-19 06:09:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:46,929 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1375 transitions. [2020-08-19 06:09:46,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:09:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1375 transitions. [2020-08-19 06:09:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 06:09:46,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:46,932 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 06:09:46,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:09:46,932 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:46,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-19 06:09:46,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:46,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199458739] [2020-08-19 06:09:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:09:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:09:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:09:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:09:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:09:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:09:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:09:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:09:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:09:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:47,063 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 06:09:47,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199458739] [2020-08-19 06:09:47,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:47,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:09:47,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512046800] [2020-08-19 06:09:47,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:09:47,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:09:47,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:09:47,066 INFO L87 Difference]: Start difference. First operand 1093 states and 1375 transitions. Second operand 8 states. [2020-08-19 06:09:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:48,570 INFO L93 Difference]: Finished difference Result 3451 states and 4586 transitions. [2020-08-19 06:09:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:09:48,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-19 06:09:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:48,584 INFO L225 Difference]: With dead ends: 3451 [2020-08-19 06:09:48,584 INFO L226 Difference]: Without dead ends: 1835 [2020-08-19 06:09:48,592 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 06:09:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-19 06:09:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1483. [2020-08-19 06:09:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-08-19 06:09:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1810 transitions. [2020-08-19 06:09:48,720 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1810 transitions. Word has length 95 [2020-08-19 06:09:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:48,720 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 1810 transitions. [2020-08-19 06:09:48,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:09:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1810 transitions. [2020-08-19 06:09:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-19 06:09:48,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:48,724 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 06:09:48,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:09:48,724 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-19 06:09:48,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:48,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639842411] [2020-08-19 06:09:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:09:48,788 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:09:48,789 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:09:48,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:09:48,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:09:48 BoogieIcfgContainer [2020-08-19 06:09:48,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:09:48,860 INFO L168 Benchmark]: Toolchain (without parser) took 17173.27 ms. Allocated memory was 141.0 MB in the beginning and 421.5 MB in the end (delta: 280.5 MB). Free memory was 103.7 MB in the beginning and 382.1 MB in the end (delta: -278.4 MB). Peak memory consumption was 297.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:48,861 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:09:48,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.48 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 182.7 MB in the end (delta: -79.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:48,864 INFO L168 Benchmark]: Boogie Preprocessor took 49.66 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 180.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:48,868 INFO L168 Benchmark]: RCFGBuilder took 535.78 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 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. [2020-08-19 06:09:48,869 INFO L168 Benchmark]: TraceAbstraction took 16187.12 ms. Allocated memory was 203.9 MB in the beginning and 421.5 MB in the end (delta: 217.6 MB). Free memory was 150.0 MB in the beginning and 382.1 MB in the end (delta: -232.1 MB). Peak memory consumption was 280.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:48,882 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 395.48 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 182.7 MB in the end (delta: -79.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.66 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 180.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.78 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 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 16187.12 ms. Allocated memory was 203.9 MB in the beginning and 421.5 MB in the end (delta: 217.6 MB). Free memory was 150.0 MB in the beginning and 382.1 MB in the end (delta: -232.1 MB). Peak memory consumption was 280.5 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: 16.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1235 SDtfs, 4705 SDslu, 492 SDs, 0 SdLazy, 8002 SolverSat, 2854 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.3s 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, 0.2s SatisfiabilityAnalysisTime, 1.5s 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...