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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:40:34,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:40:34,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:40:34,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:40:34,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:40:34,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:40:34,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:40:34,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:40:34,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:40:34,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:40:34,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:40:34,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:40:34,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:40:34,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:40:34,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:40:34,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:40:34,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:40:34,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:40:34,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:40:34,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:40:34,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:40:34,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:40:34,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:40:34,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:40:34,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:40:34,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:40:34,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:40:34,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:40:34,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:40:34,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:40:34,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:40:34,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:40:34,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:40:34,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:40:34,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:40:34,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:40:34,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:40:34,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:40:34,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:40:34,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:40:34,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:40:34,751 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 [2019-10-15 01:40:34,784 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:40:34,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:40:34,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:40:34,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:40:34,786 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:40:34,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:40:34,789 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:40:34,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:40:34,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:40:34,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:40:34,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:40:34,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:40:34,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:40:34,790 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:40:34,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:40:34,790 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:40:34,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:40:34,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:40:34,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:40:34,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:40:34,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:40:34,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:40:34,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:40:34,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:40:34,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:40:34,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:40:34,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:40:34,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:40:34,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:40:35,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:40:35,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:40:35,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:40:35,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:40:35,106 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:40:35,107 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2019-10-15 01:40:35,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded050797/be920e51c4fc43aabe1af8c86e7484bf/FLAGd81606b72 [2019-10-15 01:40:35,713 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:40:35,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2019-10-15 01:40:35,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded050797/be920e51c4fc43aabe1af8c86e7484bf/FLAGd81606b72 [2019-10-15 01:40:36,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded050797/be920e51c4fc43aabe1af8c86e7484bf [2019-10-15 01:40:36,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:40:36,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:40:36,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:36,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:40:36,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:40:36,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3304fef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36, skipping insertion in model container [2019-10-15 01:40:36,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:40:36,095 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:40:36,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:36,741 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:40:36,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:36,849 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:40:36,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36 WrapperNode [2019-10-15 01:40:36,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:36,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:40:36,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:40:36,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:40:36,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (1/1) ... [2019-10-15 01:40:36,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:40:36,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:40:36,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:40:36,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:40:36,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (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 [2019-10-15 01:40:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:40:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:40:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:40:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:40:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:40:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:40:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:40:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:40:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:40:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:40:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:40:39,175 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:40:39,175 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:40:39,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:39 BoogieIcfgContainer [2019-10-15 01:40:39,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:40:39,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:40:39,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:40:39,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:40:39,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:40:36" (1/3) ... [2019-10-15 01:40:39,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cc347a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:39, skipping insertion in model container [2019-10-15 01:40:39,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:36" (2/3) ... [2019-10-15 01:40:39,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cc347a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:39, skipping insertion in model container [2019-10-15 01:40:39,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:39" (3/3) ... [2019-10-15 01:40:39,208 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2019-10-15 01:40:39,220 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:40:39,233 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:40:39,246 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:40:39,280 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:40:39,280 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:40:39,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:40:39,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:40:39,281 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:40:39,281 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:40:39,281 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:40:39,281 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:40:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:40:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:40:39,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:39,327 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:39,329 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:39,336 INFO L82 PathProgramCache]: Analyzing trace with hash 826821476, now seen corresponding path program 1 times [2019-10-15 01:40:39,346 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:39,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322411642] [2019-10-15 01:40:39,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:39,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:39,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:39,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322411642] [2019-10-15 01:40:39,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:39,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:39,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988822720] [2019-10-15 01:40:39,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:39,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:39,904 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-15 01:40:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:40,496 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:40:40,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:40,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 01:40:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:40,521 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:40:40,522 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:40:40,527 INFO L600 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 [2019-10-15 01:40:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:40:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:40:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:40:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 285 transitions. [2019-10-15 01:40:40,634 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 285 transitions. Word has length 77 [2019-10-15 01:40:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:40,638 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 285 transitions. [2019-10-15 01:40:40,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 285 transitions. [2019-10-15 01:40:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-15 01:40:40,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:40,648 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:40:40,649 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:40,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1022494757, now seen corresponding path program 1 times [2019-10-15 01:40:40,651 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:40,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786832067] [2019-10-15 01:40:40,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:40,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:40,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:40,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786832067] [2019-10-15 01:40:40,866 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:40,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:40:40,866 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336000375] [2019-10-15 01:40:40,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:40:40,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:40:40,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:40:40,870 INFO L87 Difference]: Start difference. First operand 157 states and 285 transitions. Second operand 5 states. [2019-10-15 01:40:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:41,489 INFO L93 Difference]: Finished difference Result 479 states and 892 transitions. [2019-10-15 01:40:41,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:40:41,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2019-10-15 01:40:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:41,498 INFO L225 Difference]: With dead ends: 479 [2019-10-15 01:40:41,502 INFO L226 Difference]: Without dead ends: 327 [2019-10-15 01:40:41,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:40:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-15 01:40:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2019-10-15 01:40:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-10-15 01:40:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 546 transitions. [2019-10-15 01:40:41,558 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 546 transitions. Word has length 86 [2019-10-15 01:40:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:41,558 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 546 transitions. [2019-10-15 01:40:41,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:40:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 546 transitions. [2019-10-15 01:40:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 01:40:41,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:41,563 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:40:41,563 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash -498199828, now seen corresponding path program 1 times [2019-10-15 01:40:41,564 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:41,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467401530] [2019-10-15 01:40:41,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:41,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:41,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:41,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467401530] [2019-10-15 01:40:41,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914648361] [2019-10-15 01:40:41,698 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 [2019-10-15 01:40:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:41,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:40:41,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:40:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:41,860 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:40:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:41,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1878717967] [2019-10-15 01:40:42,006 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:40:42,006 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:40:42,013 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:40:42,024 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:40:42,026 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:40:42,408 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-15 01:40:43,909 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 156 [2019-10-15 01:40:44,830 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 141 for LOIs [2019-10-15 01:40:45,501 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-10-15 01:40:45,700 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-10-15 01:40:45,883 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-10-15 01:40:46,267 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2019-10-15 01:40:46,478 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:46,652 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-10-15 01:40:46,907 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:47,047 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:47,444 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:47,593 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:47,747 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-15 01:40:47,993 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:48,116 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:48,252 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:48,770 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-10-15 01:40:48,918 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:49,194 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:49,590 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:49,750 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:49,905 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:50,273 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-10-15 01:40:50,481 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-15 01:40:51,122 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-10-15 01:40:51,867 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:53,095 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:53,214 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:53,475 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-10-15 01:40:53,586 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:41:06,161 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 176 [2019-10-15 01:41:06,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2019-10-15 01:41:07,895 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 132528 conjuctions. This might take some time...