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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:55:08,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:55:08,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:55:08,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:55:08,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:55:08,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:55:08,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:55:08,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:55:08,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:55:08,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:55:08,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:55:08,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:55:08,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:55:08,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:55:08,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:55:08,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:55:08,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:55:08,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:55:08,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:55:08,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:55:08,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:55:08,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:55:08,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:55:08,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:55:08,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 05:55:08,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 05:55:08,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 05:55:08,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 05:55:08,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 05:55:08,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 05:55:08,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:55:08,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:55:08,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:55:08,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:55:08,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:55:08,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:55:08,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:55:08,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:55:08,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:55:08,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:55:08,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:55:08,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:55:08,591 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:55:08,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:55:08,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:55:08,592 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:55:08,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:55:08,593 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:55:08,593 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:55:08,593 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:55:08,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:55:08,594 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:55:08,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:55:08,595 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:55:08,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:55:08,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:55:08,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:55:08,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:55:08,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:55:08,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:55:08,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:55:08,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:55:08,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:55:08,597 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:55:08,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:55:08,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:55:08,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:55:08,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:55:08,598 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:55:08,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:55:08,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:55:08,598 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:55:08,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:55:08,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:55:08,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:55:08,652 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:55:08,653 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:55:08,654 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2019-09-09 05:55:08,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20753be7/2f6c9010caf4443192b5a1ff122aa26a/FLAG06e422d3d [2019-09-09 05:55:09,319 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:55:09,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2019-09-09 05:55:09,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20753be7/2f6c9010caf4443192b5a1ff122aa26a/FLAG06e422d3d [2019-09-09 05:55:09,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20753be7/2f6c9010caf4443192b5a1ff122aa26a [2019-09-09 05:55:09,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:55:09,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:55:09,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:55:09,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:55:09,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:55:09,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:55:09" (1/1) ... [2019-09-09 05:55:09,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679e3444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:09, skipping insertion in model container [2019-09-09 05:55:09,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:55:09" (1/1) ... [2019-09-09 05:55:09,574 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:55:09,634 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:55:10,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:55:10,185 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:55:10,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:55:10,352 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:55:10,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10 WrapperNode [2019-09-09 05:55:10,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:55:10,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:55:10,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:55:10,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:55:10,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (1/1) ... [2019-09-09 05:55:10,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:55:10,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:55:10,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:55:10,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:55:10,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (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 [2019-09-09 05:55:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:55:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:55:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 05:55:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:55:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 05:55:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:55:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:55:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 05:55:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:55:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:55:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:55:11,702 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:55:11,703 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 05:55:11,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:55:11 BoogieIcfgContainer [2019-09-09 05:55:11,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:55:11,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:55:11,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:55:11,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:55:11,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:55:09" (1/3) ... [2019-09-09 05:55:11,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:55:11, skipping insertion in model container [2019-09-09 05:55:11,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:10" (2/3) ... [2019-09-09 05:55:11,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:55:11, skipping insertion in model container [2019-09-09 05:55:11,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:55:11" (3/3) ... [2019-09-09 05:55:11,721 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2019-09-09 05:55:11,734 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:55:11,744 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:55:11,761 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:55:11,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:55:11,800 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:55:11,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:55:11,800 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:55:11,800 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:55:11,801 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:55:11,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:55:11,801 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:55:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 05:55:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-09 05:55:11,866 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:11,867 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:55:11,869 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1845535338, now seen corresponding path program 1 times [2019-09-09 05:55:11,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:11,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:11,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:11,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:11,923 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:12,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:12,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:55:12,382 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:12,389 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:55:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:55:12,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:12,407 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 05:55:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:13,304 INFO L93 Difference]: Finished difference Result 346 states and 487 transitions. [2019-09-09 05:55:13,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:55:13,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2019-09-09 05:55:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:13,335 INFO L225 Difference]: With dead ends: 346 [2019-09-09 05:55:13,335 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 05:55:13,338 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 05:55:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 05:55:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 05:55:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-09-09 05:55:13,455 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 114 [2019-09-09 05:55:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:13,456 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-09-09 05:55:13,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:55:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-09-09 05:55:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-09 05:55:13,462 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:13,462 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:55:13,463 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:13,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash -457589907, now seen corresponding path program 1 times [2019-09-09 05:55:13,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:13,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:13,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:13,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:13,469 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:13,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:13,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 05:55:13,632 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:13,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 05:55:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 05:55:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 05:55:13,634 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-09-09 05:55:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:14,457 INFO L93 Difference]: Finished difference Result 568 states and 814 transitions. [2019-09-09 05:55:14,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 05:55:14,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2019-09-09 05:55:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:14,465 INFO L225 Difference]: With dead ends: 568 [2019-09-09 05:55:14,465 INFO L226 Difference]: Without dead ends: 568 [2019-09-09 05:55:14,466 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 05:55:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-09-09 05:55:14,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-09-09 05:55:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-09-09 05:55:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-09-09 05:55:14,508 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 124 [2019-09-09 05:55:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:14,508 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-09-09 05:55:14,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 05:55:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-09-09 05:55:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-09 05:55:14,512 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:14,513 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:55:14,513 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash -526425041, now seen corresponding path program 1 times [2019-09-09 05:55:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:14,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:14,516 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:14,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:14,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 05:55:14,816 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:14,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 05:55:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 05:55:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:55:14,818 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 5 states. [2019-09-09 05:55:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:15,537 INFO L93 Difference]: Finished difference Result 655 states and 886 transitions. [2019-09-09 05:55:15,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:55:15,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-09-09 05:55:15,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:15,542 INFO L225 Difference]: With dead ends: 655 [2019-09-09 05:55:15,543 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 05:55:15,543 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:55:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 05:55:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 05:55:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 05:55:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 712 transitions. [2019-09-09 05:55:15,569 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 712 transitions. Word has length 125 [2019-09-09 05:55:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:15,569 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 712 transitions. [2019-09-09 05:55:15,569 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 05:55:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 712 transitions. [2019-09-09 05:55:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-09 05:55:15,572 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:15,572 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:55:15,573 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:15,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1583976871, now seen corresponding path program 1 times [2019-09-09 05:55:15,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:15,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:15,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:15,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:15,575 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:15,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:15,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:55:15,693 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:15,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:55:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:55:15,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:15,695 INFO L87 Difference]: Start difference. First operand 554 states and 712 transitions. Second operand 3 states. [2019-09-09 05:55:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:16,233 INFO L93 Difference]: Finished difference Result 689 states and 855 transitions. [2019-09-09 05:55:16,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:55:16,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-09-09 05:55:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:16,241 INFO L225 Difference]: With dead ends: 689 [2019-09-09 05:55:16,241 INFO L226 Difference]: Without dead ends: 689 [2019-09-09 05:55:16,242 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:16,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2019-09-09 05:55:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 687. [2019-09-09 05:55:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2019-09-09 05:55:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 853 transitions. [2019-09-09 05:55:16,262 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 853 transitions. Word has length 129 [2019-09-09 05:55:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:16,263 INFO L475 AbstractCegarLoop]: Abstraction has 687 states and 853 transitions. [2019-09-09 05:55:16,263 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:55:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 853 transitions. [2019-09-09 05:55:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-09 05:55:16,266 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:16,267 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:55:16,267 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:16,267 INFO L82 PathProgramCache]: Analyzing trace with hash 78625706, now seen corresponding path program 1 times [2019-09-09 05:55:16,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:16,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:16,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:16,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:16,269 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-09 05:55:16,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:16,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:55:16,379 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:16,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:55:16,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:55:16,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:16,380 INFO L87 Difference]: Start difference. First operand 687 states and 853 transitions. Second operand 3 states. [2019-09-09 05:55:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:16,944 INFO L93 Difference]: Finished difference Result 1092 states and 1326 transitions. [2019-09-09 05:55:16,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:55:16,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-09-09 05:55:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:16,945 INFO L225 Difference]: With dead ends: 1092 [2019-09-09 05:55:16,946 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:55:16,946 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:55:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:55:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:55:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:55:16,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2019-09-09 05:55:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:16,948 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:55:16,948 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:55:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:55:16,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:55:16,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:55:16 BoogieIcfgContainer [2019-09-09 05:55:16,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:55:16,957 INFO L168 Benchmark]: Toolchain (without parser) took 7400.90 ms. Allocated memory was 134.2 MB in the beginning and 320.3 MB in the end (delta: 186.1 MB). Free memory was 89.1 MB in the beginning and 131.9 MB in the end (delta: -42.8 MB). Peak memory consumption was 143.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:55:16,958 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:55:16,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.47 ms. Allocated memory was 134.2 MB in the beginning and 205.0 MB in the end (delta: 70.8 MB). Free memory was 88.9 MB in the beginning and 168.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:55:16,960 INFO L168 Benchmark]: Boogie Preprocessor took 120.26 ms. Allocated memory is still 205.0 MB. Free memory was 168.8 MB in the beginning and 164.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:55:16,961 INFO L168 Benchmark]: RCFGBuilder took 1230.94 ms. Allocated memory was 205.0 MB in the beginning and 231.2 MB in the end (delta: 26.2 MB). Free memory was 164.3 MB in the beginning and 181.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:55:16,963 INFO L168 Benchmark]: TraceAbstraction took 5247.10 ms. Allocated memory was 231.2 MB in the beginning and 320.3 MB in the end (delta: 89.1 MB). Free memory was 181.8 MB in the beginning and 131.9 MB in the end (delta: 49.9 MB). Peak memory consumption was 139.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:55:16,967 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 797.47 ms. Allocated memory was 134.2 MB in the beginning and 205.0 MB in the end (delta: 70.8 MB). Free memory was 88.9 MB in the beginning and 168.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.26 ms. Allocated memory is still 205.0 MB. Free memory was 168.8 MB in the beginning and 164.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1230.94 ms. Allocated memory was 205.0 MB in the beginning and 231.2 MB in the end (delta: 26.2 MB). Free memory was 164.3 MB in the beginning and 181.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5247.10 ms. Allocated memory was 231.2 MB in the beginning and 320.3 MB in the end (delta: 89.1 MB). Free memory was 181.8 MB in the beginning and 131.9 MB in the end (delta: 49.9 MB). Peak memory consumption was 139.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 500]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 493 SDtfs, 894 SDslu, 91 SDs, 0 SdLazy, 2094 SolverSat, 398 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 641 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 636 ConstructedInterpolants, 0 QuantifiedInterpolants, 475836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 71/71 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...