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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:06:00,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:06:00,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:06:00,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:06:00,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:06:00,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:06:00,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:06:00,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:06:00,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:06:00,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:06:00,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:06:00,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:06:00,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:06:00,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:06:00,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:06:00,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:06:00,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:06:00,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:06:00,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:06:00,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:06:00,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:06:00,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:06:00,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:06:00,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:06:00,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:06:00,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:06:00,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:06:00,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:06:00,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:06:00,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:06:00,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:06:00,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:06:00,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:06:00,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:06:00,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:06:00,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:06:00,329 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 20:06:00,347 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:06:00,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:06:00,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:06:00,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:06:00,349 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:06:00,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:06:00,349 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:06:00,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:06:00,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:06:00,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:06:00,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:06:00,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:06:00,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:06:00,351 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:06:00,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:06:00,351 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:06:00,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:06:00,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:06:00,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:06:00,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:06:00,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:06:00,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:06:00,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:06:00,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:06:00,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:06:00,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:06:00,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:06:00,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:06:00,354 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 20:06:00,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:06:00,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:06:00,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:06:00,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:06:00,681 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:06:00,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2019-10-13 20:06:00,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390c8b68b/e0234fa1ae54441ba6acc138877a8f02/FLAG5383470bc [2019-10-13 20:06:01,580 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:06:01,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2019-10-13 20:06:01,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390c8b68b/e0234fa1ae54441ba6acc138877a8f02/FLAG5383470bc [2019-10-13 20:06:02,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390c8b68b/e0234fa1ae54441ba6acc138877a8f02 [2019-10-13 20:06:02,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:06:02,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:06:02,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:02,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:06:02,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:06:02,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:02" (1/1) ... [2019-10-13 20:06:02,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38836ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:02, skipping insertion in model container [2019-10-13 20:06:02,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:02" (1/1) ... [2019-10-13 20:06:02,113 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:06:02,254 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:06:03,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:03,687 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:06:04,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:04,376 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:06:04,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04 WrapperNode [2019-10-13 20:06:04,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:04,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:06:04,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:06:04,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:06:04,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2019-10-13 20:06:04,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:06:04,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:06:04,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:06:04,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:06:04,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (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 20:06:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:06:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:06:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:06:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:06:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:06:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 20:06:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:06:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:06:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:06:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:06:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 20:06:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:06:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:06:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:06:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:06:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:06:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:06:10,115 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:06:10,116 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:06:10,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:10 BoogieIcfgContainer [2019-10-13 20:06:10,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:06:10,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:06:10,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:06:10,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:06:10,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:06:02" (1/3) ... [2019-10-13 20:06:10,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631c654a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:10, skipping insertion in model container [2019-10-13 20:06:10,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (2/3) ... [2019-10-13 20:06:10,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631c654a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:10, skipping insertion in model container [2019-10-13 20:06:10,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:10" (3/3) ... [2019-10-13 20:06:10,129 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2019-10-13 20:06:10,140 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:06:10,150 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:06:10,162 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:06:10,210 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:06:10,210 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:06:10,210 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:06:10,210 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:06:10,210 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:06:10,211 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:06:10,211 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:06:10,211 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:06:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 20:06:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 20:06:10,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:10,272 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] [2019-10-13 20:06:10,275 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:10,281 INFO L82 PathProgramCache]: Analyzing trace with hash 415024674, now seen corresponding path program 1 times [2019-10-13 20:06:10,292 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:10,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003590365] [2019-10-13 20:06:10,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:10,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:10,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:10,772 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 20:06:10,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003590365] [2019-10-13 20:06:10,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:10,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:06:10,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883940382] [2019-10-13 20:06:10,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:10,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:10,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:10,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:10,801 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2019-10-13 20:06:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:19,908 INFO L93 Difference]: Finished difference Result 3230 states and 6251 transitions. [2019-10-13 20:06:19,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:19,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2019-10-13 20:06:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:19,949 INFO L225 Difference]: With dead ends: 3230 [2019-10-13 20:06:19,949 INFO L226 Difference]: Without dead ends: 2309 [2019-10-13 20:06:19,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 20:06:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-10-13 20:06:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-10-13 20:06:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-10-13 20:06:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3821 transitions. [2019-10-13 20:06:20,132 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3821 transitions. Word has length 67 [2019-10-13 20:06:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:20,135 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 3821 transitions. [2019-10-13 20:06:20,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3821 transitions. [2019-10-13 20:06:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 20:06:20,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:20,152 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, 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] [2019-10-13 20:06:20,153 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:20,154 INFO L82 PathProgramCache]: Analyzing trace with hash 295469771, now seen corresponding path program 1 times [2019-10-13 20:06:20,156 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:20,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680218733] [2019-10-13 20:06:20,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:20,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:20,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:20,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680218733] [2019-10-13 20:06:20,464 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:20,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:20,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449948882] [2019-10-13 20:06:20,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:20,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:20,473 INFO L87 Difference]: Start difference. First operand 2309 states and 3821 transitions. Second operand 6 states. [2019-10-13 20:06:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:27,041 INFO L93 Difference]: Finished difference Result 7045 states and 11809 transitions. [2019-10-13 20:06:27,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:06:27,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-10-13 20:06:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:27,082 INFO L225 Difference]: With dead ends: 7045 [2019-10-13 20:06:27,083 INFO L226 Difference]: Without dead ends: 4742 [2019-10-13 20:06:27,089 INFO L600 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 [2019-10-13 20:06:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2019-10-13 20:06:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4697. [2019-10-13 20:06:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4697 states. [2019-10-13 20:06:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7461 transitions. [2019-10-13 20:06:27,247 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7461 transitions. Word has length 166 [2019-10-13 20:06:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:27,248 INFO L462 AbstractCegarLoop]: Abstraction has 4697 states and 7461 transitions. [2019-10-13 20:06:27,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:06:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7461 transitions. [2019-10-13 20:06:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 20:06:27,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:27,253 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, 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] [2019-10-13 20:06:27,254 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:27,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1841917839, now seen corresponding path program 1 times [2019-10-13 20:06:27,254 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:27,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184941318] [2019-10-13 20:06:27,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:27,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:27,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:27,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184941318] [2019-10-13 20:06:27,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:27,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:06:27,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449391818] [2019-10-13 20:06:27,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:27,497 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:27,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:27,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:27,499 INFO L87 Difference]: Start difference. First operand 4697 states and 7461 transitions. Second operand 4 states. [2019-10-13 20:06:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:34,998 INFO L93 Difference]: Finished difference Result 18736 states and 30965 transitions. [2019-10-13 20:06:34,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:34,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2019-10-13 20:06:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:35,076 INFO L225 Difference]: With dead ends: 18736 [2019-10-13 20:06:35,077 INFO L226 Difference]: Without dead ends: 14045 [2019-10-13 20:06:35,096 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 20:06:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14045 states. [2019-10-13 20:06:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14045 to 14045. [2019-10-13 20:06:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14045 states. [2019-10-13 20:06:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 22265 transitions. [2019-10-13 20:06:35,551 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 22265 transitions. Word has length 216 [2019-10-13 20:06:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:35,553 INFO L462 AbstractCegarLoop]: Abstraction has 14045 states and 22265 transitions. [2019-10-13 20:06:35,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 22265 transitions. [2019-10-13 20:06:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-13 20:06:35,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:35,568 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-10-13 20:06:35,568 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1634779650, now seen corresponding path program 1 times [2019-10-13 20:06:35,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:35,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412941964] [2019-10-13 20:06:35,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:35,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:35,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-10-13 20:06:36,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412941964] [2019-10-13 20:06:36,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032328493] [2019-10-13 20:06:36,009 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 [2019-10-13 20:06:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:36,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 20:06:36,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:06:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-13 20:06:36,386 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:06:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-13 20:06:36,576 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 20:06:36,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-13 20:06:36,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520462548] [2019-10-13 20:06:36,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:36,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:36,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:36,580 INFO L87 Difference]: Start difference. First operand 14045 states and 22265 transitions. Second operand 4 states.