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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:50:00,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:50:00,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:50:00,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:50:00,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:50:00,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:50:00,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:50:00,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:50:00,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:50:00,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:50:00,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:50:00,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:50:00,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:50:00,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:50:00,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:50:00,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:50:00,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:50:00,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:50:00,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:50:00,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:50:00,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:50:00,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:50:00,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:50:00,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:50:00,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:50:00,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:50:00,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:50:00,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:50:00,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:50:00,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:50:00,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:50:00,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:50:00,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:50:00,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:50:00,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:50:00,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:50:00,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:50:00,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:50:00,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:50:00,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:50:00,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:50:00,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:50:00,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:50:00,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:50:00,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:50:00,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:50:00,396 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:50:00,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:50:00,396 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:50:00,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:50:00,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:50:00,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:50:00,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:50:00,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:50:00,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:50:00,399 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:50:00,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:50:00,399 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:50:00,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:50:00,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:50:00,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:50:00,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:50:00,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:50:00,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:50:00,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:50:00,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:50:00,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:50:00,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:50:00,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:50:00,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:50:00,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:50:00,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:50:00,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:50:00,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:50:00,756 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:50:00,757 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:50:00,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-10-14 23:50:00,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda34590c/2c5ca37285c047d1aee5b8c3e36a911e/FLAG120696b5d [2019-10-14 23:50:01,252 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:50:01,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-10-14 23:50:01,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda34590c/2c5ca37285c047d1aee5b8c3e36a911e/FLAG120696b5d [2019-10-14 23:50:01,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda34590c/2c5ca37285c047d1aee5b8c3e36a911e [2019-10-14 23:50:01,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:50:01,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:50:01,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:50:01,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:50:01,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:50:01,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:50:01" (1/1) ... [2019-10-14 23:50:01,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4563917c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:01, skipping insertion in model container [2019-10-14 23:50:01,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:50:01" (1/1) ... [2019-10-14 23:50:01,678 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:50:01,733 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:50:02,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:50:02,058 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:50:02,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:50:02,233 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:50:02,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02 WrapperNode [2019-10-14 23:50:02,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:50:02,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:50:02,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:50:02,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:50:02,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... [2019-10-14 23:50:02,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:50:02,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:50:02,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:50:02,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:50:02,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-14 23:50:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:50:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:50:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-14 23:50:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-10-14 23:50:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-10-14 23:50:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-10-14 23:50:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-10-14 23:50:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-10-14 23:50:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-10-14 23:50:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-14 23:50:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-14 23:50:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-14 23:50:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-14 23:50:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-14 23:50:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-14 23:50:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-14 23:50:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-14 23:50:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-14 23:50:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-14 23:50:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-14 23:50:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-14 23:50:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:50:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:50:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:50:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-14 23:50:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-10-14 23:50:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-10-14 23:50:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-10-14 23:50:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-10-14 23:50:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-14 23:50:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-14 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:50:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:50:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:50:02,929 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := ~a~0; [2019-10-14 23:50:02,930 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2019-10-14 23:50:02,940 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:50:02,941 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:50:02,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:50:02 BoogieIcfgContainer [2019-10-14 23:50:02,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:50:02,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:50:02,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:50:02,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:50:02,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:50:01" (1/3) ... [2019-10-14 23:50:02,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36588a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:50:02, skipping insertion in model container [2019-10-14 23:50:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:02" (2/3) ... [2019-10-14 23:50:02,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36588a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:50:02, skipping insertion in model container [2019-10-14 23:50:02,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:50:02" (3/3) ... [2019-10-14 23:50:02,952 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2019-10-14 23:50:02,962 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:50:02,974 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:50:02,986 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:50:03,020 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:50:03,021 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:50:03,022 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:50:03,022 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:50:03,022 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:50:03,022 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:50:03,022 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:50:03,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:50:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2019-10-14 23:50:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:50:03,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:03,069 INFO L380 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, 1, 1, 1] [2019-10-14 23:50:03,071 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1427944937, now seen corresponding path program 1 times [2019-10-14 23:50:03,083 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:03,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024899472] [2019-10-14 23:50:03,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:03,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:03,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:03,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024899472] [2019-10-14 23:50:03,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:03,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:03,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991358870] [2019-10-14 23:50:03,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:03,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:03,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:03,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:03,807 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 10 states. [2019-10-14 23:50:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:07,602 INFO L93 Difference]: Finished difference Result 630 states and 1050 transitions. [2019-10-14 23:50:07,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-14 23:50:07,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-14 23:50:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:07,625 INFO L225 Difference]: With dead ends: 630 [2019-10-14 23:50:07,626 INFO L226 Difference]: Without dead ends: 476 [2019-10-14 23:50:07,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:50:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-14 23:50:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 271. [2019-10-14 23:50:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-10-14 23:50:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 363 transitions. [2019-10-14 23:50:07,765 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 363 transitions. Word has length 78 [2019-10-14 23:50:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:07,766 INFO L462 AbstractCegarLoop]: Abstraction has 271 states and 363 transitions. [2019-10-14 23:50:07,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 363 transitions. [2019-10-14 23:50:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:50:07,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:07,771 INFO L380 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, 1, 1, 1] [2019-10-14 23:50:07,772 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:07,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1440144215, now seen corresponding path program 1 times [2019-10-14 23:50:07,772 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:07,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367072203] [2019-10-14 23:50:07,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:07,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:07,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:08,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367072203] [2019-10-14 23:50:08,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:08,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:08,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659995500] [2019-10-14 23:50:08,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:08,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:08,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:08,079 INFO L87 Difference]: Start difference. First operand 271 states and 363 transitions. Second operand 10 states. [2019-10-14 23:50:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:11,778 INFO L93 Difference]: Finished difference Result 924 states and 1361 transitions. [2019-10-14 23:50:11,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-14 23:50:11,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-14 23:50:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:11,785 INFO L225 Difference]: With dead ends: 924 [2019-10-14 23:50:11,785 INFO L226 Difference]: Without dead ends: 680 [2019-10-14 23:50:11,788 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2019-10-14 23:50:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-10-14 23:50:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 416. [2019-10-14 23:50:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-10-14 23:50:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 562 transitions. [2019-10-14 23:50:11,864 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 562 transitions. Word has length 78 [2019-10-14 23:50:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:11,864 INFO L462 AbstractCegarLoop]: Abstraction has 416 states and 562 transitions. [2019-10-14 23:50:11,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 562 transitions. [2019-10-14 23:50:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:50:11,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:11,868 INFO L380 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, 1, 1, 1] [2019-10-14 23:50:11,869 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -53358805, now seen corresponding path program 1 times [2019-10-14 23:50:11,869 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:11,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869017365] [2019-10-14 23:50:11,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:11,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:11,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:12,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869017365] [2019-10-14 23:50:12,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:12,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:12,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940445152] [2019-10-14 23:50:12,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:12,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:12,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:12,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:12,113 INFO L87 Difference]: Start difference. First operand 416 states and 562 transitions. Second operand 10 states. [2019-10-14 23:50:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:17,205 INFO L93 Difference]: Finished difference Result 1984 states and 2933 transitions. [2019-10-14 23:50:17,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-14 23:50:17,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-14 23:50:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:17,220 INFO L225 Difference]: With dead ends: 1984 [2019-10-14 23:50:17,220 INFO L226 Difference]: Without dead ends: 1611 [2019-10-14 23:50:17,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=931, Unknown=0, NotChecked=0, Total=1190 [2019-10-14 23:50:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2019-10-14 23:50:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1175. [2019-10-14 23:50:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-14 23:50:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1572 transitions. [2019-10-14 23:50:17,367 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1572 transitions. Word has length 78 [2019-10-14 23:50:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:17,367 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1572 transitions. [2019-10-14 23:50:17,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1572 transitions. [2019-10-14 23:50:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-14 23:50:17,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:17,370 INFO L380 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, 1, 1, 1, 1] [2019-10-14 23:50:17,371 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:17,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1828215755, now seen corresponding path program 1 times [2019-10-14 23:50:17,371 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:17,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434358360] [2019-10-14 23:50:17,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:17,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:17,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:17,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434358360] [2019-10-14 23:50:17,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:17,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:50:17,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488087669] [2019-10-14 23:50:17,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:50:17,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:17,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:50:17,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:50:17,589 INFO L87 Difference]: Start difference. First operand 1175 states and 1572 transitions. Second operand 11 states. [2019-10-14 23:50:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:19,818 INFO L93 Difference]: Finished difference Result 2733 states and 3855 transitions. [2019-10-14 23:50:19,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:50:19,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2019-10-14 23:50:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:19,834 INFO L225 Difference]: With dead ends: 2733 [2019-10-14 23:50:19,834 INFO L226 Difference]: Without dead ends: 1601 [2019-10-14 23:50:19,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:50:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2019-10-14 23:50:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1195. [2019-10-14 23:50:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2019-10-14 23:50:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1587 transitions. [2019-10-14 23:50:20,094 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1587 transitions. Word has length 79 [2019-10-14 23:50:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:20,094 INFO L462 AbstractCegarLoop]: Abstraction has 1195 states and 1587 transitions. [2019-10-14 23:50:20,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:50:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1587 transitions. [2019-10-14 23:50:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-14 23:50:20,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:20,096 INFO L380 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, 1, 1, 1, 1] [2019-10-14 23:50:20,097 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1580069261, now seen corresponding path program 1 times [2019-10-14 23:50:20,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:20,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009262272] [2019-10-14 23:50:20,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:20,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:20,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:20,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009262272] [2019-10-14 23:50:20,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:20,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:20,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037744966] [2019-10-14 23:50:20,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:20,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:20,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:20,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:20,361 INFO L87 Difference]: Start difference. First operand 1195 states and 1587 transitions. Second operand 10 states. [2019-10-14 23:50:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:24,052 INFO L93 Difference]: Finished difference Result 4057 states and 5875 transitions. [2019-10-14 23:50:24,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:50:24,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2019-10-14 23:50:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:24,055 INFO L225 Difference]: With dead ends: 4057 [2019-10-14 23:50:24,056 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:50:24,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:50:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:50:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:50:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:50:24,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:50:24,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2019-10-14 23:50:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:24,071 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:50:24,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:50:24,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:50:24,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:50:24,212 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 6 [2019-10-14 23:50:24,441 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 6 [2019-10-14 23:50:24,675 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2019-10-14 23:50:25,287 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2019-10-14 23:50:26,339 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-10-14 23:50:26,516 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-10-14 23:50:32,943 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 13 [2019-10-14 23:50:33,531 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 13 [2019-10-14 23:50:33,952 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 17 [2019-10-14 23:50:34,244 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 17 [2019-10-14 23:50:34,489 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 23 [2019-10-14 23:50:34,720 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 17 [2019-10-14 23:50:35,012 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 32 [2019-10-14 23:50:35,252 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 23 [2019-10-14 23:50:35,394 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-10-14 23:50:35,692 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 32 [2019-10-14 23:50:36,141 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 13 [2019-10-14 23:50:36,243 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-10-14 23:50:36,620 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 38 [2019-10-14 23:50:36,804 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2019-10-14 23:50:36,986 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 17