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/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:53:03,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:53:03,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:53:03,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:53:03,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:53:03,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:53:03,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:53:03,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:53:03,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:53:03,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:53:03,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:53:03,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:53:03,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:53:03,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:53:03,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:53:03,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:53:03,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:53:03,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:53:03,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:53:03,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:53:03,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:53:03,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:53:03,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:53:03,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:53:03,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:53:03,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:53:03,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:53:03,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:53:03,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:53:03,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:53:03,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:53:03,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:53:03,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:53:03,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:53:03,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:53:03,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:53:03,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:53:03,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:53:03,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:53:03,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:53:03,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:53:03,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:53:03,437 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:53:03,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:53:03,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:53:03,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:53:03,439 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:53:03,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:53:03,440 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:53:03,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:53:03,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:53:03,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:53:03,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:53:03,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:53:03,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:53:03,441 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:53:03,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:53:03,443 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:53:03,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:53:03,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:53:03,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:53:03,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:53:03,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:53:03,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:53:03,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:53:03,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:53:03,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:53:03,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:53:03,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:53:03,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:53:03,445 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 [2019-10-14 23:53:03,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:53:03,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:53:03,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:53:03,750 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:53:03,751 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:53:03,751 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2019-10-14 23:53:03,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec23e642/4b7691b99e88497abd1cdd718faf394e/FLAG3cd2c6d6f [2019-10-14 23:53:04,374 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:53:04,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2019-10-14 23:53:04,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec23e642/4b7691b99e88497abd1cdd718faf394e/FLAG3cd2c6d6f [2019-10-14 23:53:04,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec23e642/4b7691b99e88497abd1cdd718faf394e [2019-10-14 23:53:04,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:53:04,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:53:04,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:53:04,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:53:04,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:53:04,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:04" (1/1) ... [2019-10-14 23:53:04,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ece1d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04, skipping insertion in model container [2019-10-14 23:53:04,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:04" (1/1) ... [2019-10-14 23:53:04,680 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:53:04,734 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:53:05,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:53:05,344 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:53:05,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:53:05,450 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:53:05,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05 WrapperNode [2019-10-14 23:53:05,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:53:05,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:53:05,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:53:05,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:53:05,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:53:05,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:53:05,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:53:05,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:53:05,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:53:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:53:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:53:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:53:05,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:53:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:53:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:53:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:53:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:53:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:53:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:53:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:53:06,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:53:06,917 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:53:06,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:06 BoogieIcfgContainer [2019-10-14 23:53:06,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:53:06,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:53:06,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:53:06,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:53:06,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:04" (1/3) ... [2019-10-14 23:53:06,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf3a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:06, skipping insertion in model container [2019-10-14 23:53:06,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (2/3) ... [2019-10-14 23:53:06,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf3a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:06, skipping insertion in model container [2019-10-14 23:53:06,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:06" (3/3) ... [2019-10-14 23:53:06,950 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2019-10-14 23:53:06,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:53:06,973 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:53:06,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:53:07,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:53:07,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:53:07,036 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:53:07,037 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:53:07,037 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:53:07,037 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:53:07,038 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:53:07,038 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:53:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:53:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-14 23:53:07,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:07,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:53:07,110 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash -897711290, now seen corresponding path program 1 times [2019-10-14 23:53:07,130 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:07,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698760707] [2019-10-14 23:53:07,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:07,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:07,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:07,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698760707] [2019-10-14 23:53:07,736 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:07,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:53:07,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967621458] [2019-10-14 23:53:07,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:53:07,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:07,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:53:07,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:53:07,762 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-14 23:53:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:08,628 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:53:08,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:08,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-14 23:53:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:08,657 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:53:08,657 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:53:08,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:53:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:53:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:53:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:53:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-10-14 23:53:08,737 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 110 [2019-10-14 23:53:08,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:08,738 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-10-14 23:53:08,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:53:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-10-14 23:53:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:53:08,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:08,743 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:53:08,743 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1715018595, now seen corresponding path program 1 times [2019-10-14 23:53:08,744 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:08,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153436707] [2019-10-14 23:53:08,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:08,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:08,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:08,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153436707] [2019-10-14 23:53:08,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:08,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:53:08,889 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071548960] [2019-10-14 23:53:08,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:53:08,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:08,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:53:08,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:53:08,892 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-10-14 23:53:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:09,697 INFO L93 Difference]: Finished difference Result 840 states and 1222 transitions. [2019-10-14 23:53:09,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:53:09,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-14 23:53:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:09,708 INFO L225 Difference]: With dead ends: 840 [2019-10-14 23:53:09,708 INFO L226 Difference]: Without dead ends: 568 [2019-10-14 23:53:09,710 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 [2019-10-14 23:53:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-14 23:53:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-10-14 23:53:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-14 23:53:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 784 transitions. [2019-10-14 23:53:09,757 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 784 transitions. Word has length 120 [2019-10-14 23:53:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:09,758 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 784 transitions. [2019-10-14 23:53:09,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:53:09,758 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 784 transitions. [2019-10-14 23:53:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:53:09,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:09,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:53:09,763 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:09,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1875176562, now seen corresponding path program 1 times [2019-10-14 23:53:09,764 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:09,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407926547] [2019-10-14 23:53:09,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:09,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:09,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:09,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407926547] [2019-10-14 23:53:09,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595476760] [2019-10-14 23:53:09,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:53:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:10,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:53:10,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:53:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:53:10,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:53:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:53:10,235 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:53:10,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-14 23:53:10,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161349417] [2019-10-14 23:53:10,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:53:10,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:10,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:53:10,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:53:10,238 INFO L87 Difference]: Start difference. First operand 556 states and 784 transitions. Second operand 3 states. [2019-10-14 23:53:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:10,822 INFO L93 Difference]: Finished difference Result 1650 states and 2377 transitions. [2019-10-14 23:53:10,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:10,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-14 23:53:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:10,830 INFO L225 Difference]: With dead ends: 1650 [2019-10-14 23:53:10,831 INFO L226 Difference]: Without dead ends: 1100 [2019-10-14 23:53:10,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:53:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2019-10-14 23:53:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1100. [2019-10-14 23:53:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2019-10-14 23:53:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1508 transitions. [2019-10-14 23:53:10,883 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1508 transitions. Word has length 144 [2019-10-14 23:53:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:10,884 INFO L462 AbstractCegarLoop]: Abstraction has 1100 states and 1508 transitions. [2019-10-14 23:53:10,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:53:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1508 transitions. [2019-10-14 23:53:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-14 23:53:10,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:10,898 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, 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] [2019-10-14 23:53:11,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:53:11,100 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:11,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2013677690, now seen corresponding path program 1 times [2019-10-14 23:53:11,101 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:11,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968809844] [2019-10-14 23:53:11,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:11,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:11,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:11,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968809844] [2019-10-14 23:53:11,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121573959] [2019-10-14 23:53:11,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:53:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:11,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:53:11,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:53:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:11,508 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:53:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:11,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1671346385] [2019-10-14 23:53:11,613 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 194 [2019-10-14 23:53:11,668 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:53:11,668 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)