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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:05:57,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:05:57,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:05:57,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:05:57,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:05:57,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:05:57,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:05:57,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:05:57,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:05:57,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:05:57,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:05:57,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:05:57,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:05:57,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:05:57,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:05:57,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:05:57,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:05:57,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:05:57,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:05:57,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:05:57,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:05:57,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:05:57,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:05:57,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:05:57,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:05:57,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:05:57,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:05:57,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:05:57,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:05:57,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:05:57,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:05:57,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:05:57,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:05:57,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:05:57,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:05:57,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:05:57,373 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 [2019-10-13 20:05:57,388 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:05:57,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:05:57,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:05:57,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:05:57,390 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:05:57,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:05:57,390 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:05:57,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:05:57,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:05:57,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:05:57,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:05:57,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:05:57,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:05:57,392 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:05:57,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:05:57,392 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:05:57,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:05:57,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:05:57,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:05:57,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:05:57,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:05:57,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:05:57,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:05:57,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:05:57,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:05:57,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:05:57,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:05:57,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:05:57,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:05:57,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:05:57,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:05:57,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:05:57,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:05:57,750 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:05:57,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2019-10-13 20:05:57,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0967a669/d095609e325147c78170d17bf6ac17dc/FLAG2bb4f7115 [2019-10-13 20:05:58,591 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:05:58,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2019-10-13 20:05:58,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0967a669/d095609e325147c78170d17bf6ac17dc/FLAG2bb4f7115 [2019-10-13 20:05:58,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0967a669/d095609e325147c78170d17bf6ac17dc [2019-10-13 20:05:58,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:05:58,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:05:58,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:05:58,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:05:58,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:05:58,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:58" (1/1) ... [2019-10-13 20:05:58,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2347579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:58, skipping insertion in model container [2019-10-13 20:05:58,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:58" (1/1) ... [2019-10-13 20:05:58,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:05:58,933 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:06:00,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:00,650 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:06:01,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:01,281 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:06:01,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01 WrapperNode [2019-10-13 20:06:01,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:01,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:06:01,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:06:01,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:06:01,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (1/1) ... [2019-10-13 20:06:01,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:06:01,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:06:01,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:06:01,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:06:01,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (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 [2019-10-13 20:06:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:06:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:06:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:06:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:06:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:06:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 20:06:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:06:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:06:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:06:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:06:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 20:06:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:06:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:06:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:06:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:06:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:06:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:06:07,346 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:06:07,347 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:06:07,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:07 BoogieIcfgContainer [2019-10-13 20:06:07,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:06:07,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:06:07,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:06:07,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:06:07,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:05:58" (1/3) ... [2019-10-13 20:06:07,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e896e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:07, skipping insertion in model container [2019-10-13 20:06:07,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:01" (2/3) ... [2019-10-13 20:06:07,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e896e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:07, skipping insertion in model container [2019-10-13 20:06:07,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:07" (3/3) ... [2019-10-13 20:06:07,359 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2019-10-13 20:06:07,370 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:06:07,380 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:06:07,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:06:07,430 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:06:07,430 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:06:07,430 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:06:07,431 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:06:07,431 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:06:07,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:06:07,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:06:07,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:06:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 20:06:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 20:06:07,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:07,483 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] [2019-10-13 20:06:07,485 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -157974758, now seen corresponding path program 1 times [2019-10-13 20:06:07,504 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:07,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131904722] [2019-10-13 20:06:07,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:07,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:07,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:07,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131904722] [2019-10-13 20:06:07,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:07,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:06:07,886 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341820377] [2019-10-13 20:06:07,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:06:07,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:07,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:06:07,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:06:07,914 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-10-13 20:06:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:13,053 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-10-13 20:06:13,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:06:13,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-13 20:06:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:13,092 INFO L225 Difference]: With dead ends: 2443 [2019-10-13 20:06:13,093 INFO L226 Difference]: Without dead ends: 1542 [2019-10-13 20:06:13,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:06:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-10-13 20:06:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-10-13 20:06:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-13 20:06:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2702 transitions. [2019-10-13 20:06:13,270 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2702 transitions. Word has length 57 [2019-10-13 20:06:13,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:13,271 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2702 transitions. [2019-10-13 20:06:13,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:06:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2702 transitions. [2019-10-13 20:06:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 20:06:13,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:13,278 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, 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] [2019-10-13 20:06:13,278 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:13,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1774223795, now seen corresponding path program 1 times [2019-10-13 20:06:13,279 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:13,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131675714] [2019-10-13 20:06:13,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:13,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:13,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:13,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131675714] [2019-10-13 20:06:13,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:13,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:06:13,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584573325] [2019-10-13 20:06:13,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:13,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:13,501 INFO L87 Difference]: Start difference. First operand 1542 states and 2702 transitions. Second operand 4 states. [2019-10-13 20:06:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:21,282 INFO L93 Difference]: Finished difference Result 6146 states and 10908 transitions. [2019-10-13 20:06:21,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:21,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-10-13 20:06:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:21,309 INFO L225 Difference]: With dead ends: 6146 [2019-10-13 20:06:21,309 INFO L226 Difference]: Without dead ends: 4610 [2019-10-13 20:06:21,315 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2019-10-13 20:06:21,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2019-10-13 20:06:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4610 states. [2019-10-13 20:06:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 7717 transitions. [2019-10-13 20:06:21,432 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 7717 transitions. Word has length 132 [2019-10-13 20:06:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:21,433 INFO L462 AbstractCegarLoop]: Abstraction has 4610 states and 7717 transitions. [2019-10-13 20:06:21,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 7717 transitions. [2019-10-13 20:06:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 20:06:21,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:21,440 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:21,440 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 773603615, now seen corresponding path program 1 times [2019-10-13 20:06:21,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:21,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946706889] [2019-10-13 20:06:21,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:21,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:21,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:21,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946706889] [2019-10-13 20:06:21,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:21,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:21,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66065633] [2019-10-13 20:06:21,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:21,724 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:21,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:21,725 INFO L87 Difference]: Start difference. First operand 4610 states and 7717 transitions. Second operand 6 states. [2019-10-13 20:06:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:28,613 INFO L93 Difference]: Finished difference Result 14035 states and 24146 transitions. [2019-10-13 20:06:28,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:06:28,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2019-10-13 20:06:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:28,674 INFO L225 Difference]: With dead ends: 14035 [2019-10-13 20:06:28,674 INFO L226 Difference]: Without dead ends: 9431 [2019-10-13 20:06:28,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 20:06:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2019-10-13 20:06:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 9352. [2019-10-13 20:06:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9352 states. [2019-10-13 20:06:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 15344 transitions. [2019-10-13 20:06:28,997 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 15344 transitions. Word has length 170 [2019-10-13 20:06:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:28,999 INFO L462 AbstractCegarLoop]: Abstraction has 9352 states and 15344 transitions. [2019-10-13 20:06:28,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:06:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 15344 transitions. [2019-10-13 20:06:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-13 20:06:29,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:29,008 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:29,008 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:29,009 INFO L82 PathProgramCache]: Analyzing trace with hash 398846734, now seen corresponding path program 1 times [2019-10-13 20:06:29,009 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:29,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173794393] [2019-10-13 20:06:29,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:29,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:29,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:29,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173794393] [2019-10-13 20:06:29,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:29,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:29,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326389428] [2019-10-13 20:06:29,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:29,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:29,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:29,334 INFO L87 Difference]: Start difference. First operand 9352 states and 15344 transitions. Second operand 6 states.