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/bist_cell.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:49:51,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:49:51,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:49:51,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:49:51,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:49:51,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:49:51,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:49:51,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:49:51,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:49:51,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:49:51,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:49:51,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:49:51,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:49:51,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:49:51,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:49:51,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:49:51,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:49:51,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:49:51,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:49:51,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:49:51,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:49:51,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:49:51,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:49:51,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:49:51,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:49:51,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:49:51,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:49:51,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:49:51,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:49:51,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:49:51,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:49:51,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:49:51,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:49:51,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:49:51,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:49:51,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:49:51,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:49:51,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:49:51,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:49:51,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:49:51,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:49:51,569 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 23:49:51,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:49:51,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:49:51,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:49:51,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:49:51,598 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:49:51,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:49:51,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:49:51,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:49:51,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:49:51,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:49:51,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:49:51,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:49:51,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:49:51,600 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:49:51,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:49:51,600 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:49:51,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:49:51,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:49:51,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:49:51,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:49:51,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:49:51,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:49:51,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:49:51,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:49:51,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:49:51,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:49:51,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:49:51,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:49:51,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:49:51,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:49:51,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:49:51,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:49:51,957 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:49:51,958 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:49:51,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/bist_cell.cil.c [2019-10-14 23:49:52,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049f8510e/c8879e4e988945eaa19363ec13d7e95d/FLAG52a2327fb [2019-10-14 23:49:52,558 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:49:52,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/bist_cell.cil.c [2019-10-14 23:49:52,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049f8510e/c8879e4e988945eaa19363ec13d7e95d/FLAG52a2327fb [2019-10-14 23:49:52,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049f8510e/c8879e4e988945eaa19363ec13d7e95d [2019-10-14 23:49:52,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:49:52,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:49:52,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:52,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:49:52,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:49:52,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:52" (1/1) ... [2019-10-14 23:49:52,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32833bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:52, skipping insertion in model container [2019-10-14 23:49:52,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:52" (1/1) ... [2019-10-14 23:49:52,932 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:49:52,988 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:49:53,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:53,230 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:49:53,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:53,378 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:49:53,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53 WrapperNode [2019-10-14 23:49:53,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:53,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:49:53,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:49:53,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:49:53,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (1/1) ... [2019-10-14 23:49:53,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:49:53,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:49:53,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:49:53,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:49:53,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (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 23:49:53,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:49:53,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:49:53,479 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-14 23:49:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure method1 [2019-10-14 23:49:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure is_method1_triggered [2019-10-14 23:49:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b0 [2019-10-14 23:49:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b1 [2019-10-14 23:49:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d0 [2019-10-14 23:49:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d1 [2019-10-14 23:49:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure update_z [2019-10-14 23:49:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-14 23:49:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-14 23:49:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-14 23:49:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-14 23:49:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-14 23:49:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-14 23:49:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-14 23:49:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-14 23:49:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-14 23:49:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-14 23:49:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:49:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:49:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:49:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-14 23:49:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure method1 [2019-10-14 23:49:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure is_method1_triggered [2019-10-14 23:49:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_b0 [2019-10-14 23:49:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_b1 [2019-10-14 23:49:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_d0 [2019-10-14 23:49:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_d1 [2019-10-14 23:49:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_z [2019-10-14 23:49:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-14 23:49:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-14 23:49:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-14 23:49:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-14 23:49:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-14 23:49:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-14 23:49:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-14 23:49:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-14 23:49:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-14 23:49:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-14 23:49:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:49:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:49:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:49:54,063 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:49:54,063 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:49:54,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:54 BoogieIcfgContainer [2019-10-14 23:49:54,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:49:54,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:49:54,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:49:54,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:49:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:49:52" (1/3) ... [2019-10-14 23:49:54,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5612c6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:54, skipping insertion in model container [2019-10-14 23:49:54,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:53" (2/3) ... [2019-10-14 23:49:54,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5612c6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:54, skipping insertion in model container [2019-10-14 23:49:54,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:54" (3/3) ... [2019-10-14 23:49:54,074 INFO L109 eAbstractionObserver]: Analyzing ICFG bist_cell.cil.c [2019-10-14 23:49:54,085 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:49:54,094 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:49:54,103 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:49:54,131 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:49:54,131 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:49:54,132 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:49:54,132 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:49:54,132 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:49:54,133 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:49:54,133 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:49:54,133 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:49:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2019-10-14 23:49:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:49:54,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:54,164 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] [2019-10-14 23:49:54,166 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:54,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:54,172 INFO L82 PathProgramCache]: Analyzing trace with hash -778963544, now seen corresponding path program 1 times [2019-10-14 23:49:54,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:54,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64567610] [2019-10-14 23:49:54,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:54,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:54,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:55,132 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 23:49:55,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64567610] [2019-10-14 23:49:55,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:55,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:49:55,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135078752] [2019-10-14 23:49:55,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:49:55,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:55,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:49:55,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:49:55,156 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 12 states. [2019-10-14 23:50:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:00,521 INFO L93 Difference]: Finished difference Result 590 states and 1000 transitions. [2019-10-14 23:50:00,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-14 23:50:00,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2019-10-14 23:50:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:00,547 INFO L225 Difference]: With dead ends: 590 [2019-10-14 23:50:00,548 INFO L226 Difference]: Without dead ends: 459 [2019-10-14 23:50:00,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2019-10-14 23:50:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-10-14 23:50:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 288. [2019-10-14 23:50:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-10-14 23:50:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 410 transitions. [2019-10-14 23:50:00,694 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 410 transitions. Word has length 58 [2019-10-14 23:50:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:00,695 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 410 transitions. [2019-10-14 23:50:00,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:50:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 410 transitions. [2019-10-14 23:50:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:50:00,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:00,705 INFO L380 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, 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] [2019-10-14 23:50:00,706 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1800050042, now seen corresponding path program 1 times [2019-10-14 23:50:00,707 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:00,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489778915] [2019-10-14 23:50:00,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:00,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:00,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:50:01,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489778915] [2019-10-14 23:50:01,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196577082] [2019-10-14 23:50:01,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:01,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 23:50:01,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:50:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-14 23:50:01,809 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:50:01,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 17 [2019-10-14 23:50:01,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639857367] [2019-10-14 23:50:01,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 23:50:01,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:01,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 23:50:01,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:50:01,816 INFO L87 Difference]: Start difference. First operand 288 states and 410 transitions. Second operand 17 states. [2019-10-14 23:50:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:07,266 INFO L93 Difference]: Finished difference Result 1329 states and 2190 transitions. [2019-10-14 23:50:07,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-10-14 23:50:07,312 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 125 [2019-10-14 23:50:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:07,324 INFO L225 Difference]: With dead ends: 1329 [2019-10-14 23:50:07,324 INFO L226 Difference]: Without dead ends: 1061 [2019-10-14 23:50:07,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=756, Invalid=2550, Unknown=0, NotChecked=0, Total=3306 [2019-10-14 23:50:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2019-10-14 23:50:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 674. [2019-10-14 23:50:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-14 23:50:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 979 transitions. [2019-10-14 23:50:07,492 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 979 transitions. Word has length 125 [2019-10-14 23:50:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:07,493 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 979 transitions. [2019-10-14 23:50:07,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-14 23:50:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 979 transitions. [2019-10-14 23:50:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 23:50:07,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:07,504 INFO L380 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, 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] [2019-10-14 23:50:07,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:07,710 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash 783260214, now seen corresponding path program 1 times [2019-10-14 23:50:07,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:07,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232682772] [2019-10-14 23:50:07,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:07,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:07,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:50:08,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232682772] [2019-10-14 23:50:08,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661093683] [2019-10-14 23:50:08,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:08,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 23:50:08,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:50:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-14 23:50:08,623 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:50:08,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2019-10-14 23:50:08,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678778173] [2019-10-14 23:50:08,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 23:50:08,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:08,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 23:50:08,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:50:08,627 INFO L87 Difference]: Start difference. First operand 674 states and 979 transitions. Second operand 17 states. [2019-10-14 23:50:09,902 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-10-14 23:50:10,736 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-14 23:50:10,906 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-14 23:50:11,217 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-10-14 23:50:11,508 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-10-14 23:50:11,808 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-14 23:50:14,575 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-10-14 23:50:15,624 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-10-14 23:50:15,780 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-14 23:50:17,160 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-14 23:50:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:21,794 INFO L93 Difference]: Finished difference Result 5682 states and 9970 transitions. [2019-10-14 23:50:21,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-10-14 23:50:21,794 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2019-10-14 23:50:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:21,834 INFO L225 Difference]: With dead ends: 5682 [2019-10-14 23:50:21,834 INFO L226 Difference]: Without dead ends: 5035 [2019-10-14 23:50:21,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5178 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1863, Invalid=11709, Unknown=0, NotChecked=0, Total=13572 [2019-10-14 23:50:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2019-10-14 23:50:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 3920. [2019-10-14 23:50:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2019-10-14 23:50:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5954 transitions. [2019-10-14 23:50:22,264 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5954 transitions. Word has length 127 [2019-10-14 23:50:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:22,265 INFO L462 AbstractCegarLoop]: Abstraction has 3920 states and 5954 transitions. [2019-10-14 23:50:22,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-14 23:50:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5954 transitions. [2019-10-14 23:50:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-14 23:50:22,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:22,288 INFO L380 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, 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] [2019-10-14 23:50:22,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:22,494 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash -910777502, now seen corresponding path program 1 times [2019-10-14 23:50:22,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:22,496 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927127620] [2019-10-14 23:50:22,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:22,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:22,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:50:22,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927127620] [2019-10-14 23:50:22,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107001291] [2019-10-14 23:50:22,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:50:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:23,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 23:50:23,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:50:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-14 23:50:23,220 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:50:23,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 17 [2019-10-14 23:50:23,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500353038] [2019-10-14 23:50:23,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 23:50:23,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:23,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 23:50:23,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:50:23,222 INFO L87 Difference]: Start difference. First operand 3920 states and 5954 transitions. Second operand 17 states. [2019-10-14 23:50:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:28,951 INFO L93 Difference]: Finished difference Result 10797 states and 16198 transitions. [2019-10-14 23:50:28,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-10-14 23:50:28,952 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 129 [2019-10-14 23:50:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:29,001 INFO L225 Difference]: With dead ends: 10797 [2019-10-14 23:50:29,001 INFO L226 Difference]: Without dead ends: 7155 [2019-10-14 23:50:29,019 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2019-10-14 23:50:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states.