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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:53:21,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:53:21,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:53:21,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:53:21,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:53:21,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:53:21,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:53:21,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:53:21,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:53:21,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:53:21,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:53:21,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:53:21,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:53:21,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:53:21,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:53:21,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:53:21,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:53:21,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:53:21,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:53:21,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:53:21,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:53:21,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:53:21,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:53:21,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:53:21,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:53:21,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:53:21,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:53:21,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:53:21,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:53:21,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:53:21,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:53:21,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:53:21,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:53:21,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:53:21,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:53:21,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:53:21,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:53:21,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:53:21,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:53:21,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:53:21,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:53:21,631 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 23:53:21,644 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:53:21,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:53:21,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:53:21,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:53:21,646 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:53:21,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:53:21,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:53:21,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:53:21,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:53:21,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:53:21,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:53:21,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:53:21,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:53:21,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:53:21,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:53:21,648 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:53:21,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:53:21,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:53:21,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:53:21,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:53:21,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:53:21,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:53:21,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:53:21,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:53:21,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:53:21,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:53:21,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:53:21,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:53:21,651 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 23:53:21,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:53:21,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:53:21,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:53:21,943 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:53:21,944 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:53:21,944 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2019-10-14 23:53:22,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9d6f892/9896b0f70125449c922275ec7b5f704a/FLAGa58caaea8 [2019-10-14 23:53:22,615 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:53:22,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2019-10-14 23:53:22,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9d6f892/9896b0f70125449c922275ec7b5f704a/FLAGa58caaea8 [2019-10-14 23:53:22,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9d6f892/9896b0f70125449c922275ec7b5f704a [2019-10-14 23:53:22,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:53:22,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:53:22,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:53:22,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:53:22,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:53:22,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:22" (1/1) ... [2019-10-14 23:53:22,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebafe9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:22, skipping insertion in model container [2019-10-14 23:53:22,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:22" (1/1) ... [2019-10-14 23:53:22,938 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:53:22,998 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:53:23,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:53:23,588 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:53:23,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:53:23,741 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:53:23,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23 WrapperNode [2019-10-14 23:53:23,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:53:23,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:53:23,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:53:23,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:53:23,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (1/1) ... [2019-10-14 23:53:23,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:53:23,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:53:23,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:53:23,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:53:23,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (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 23:53:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:53:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:53:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:53:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:53:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:53:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:53:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:53:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:53:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:53:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:53:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:53:25,205 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:53:25,205 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:53:25,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:25 BoogieIcfgContainer [2019-10-14 23:53:25,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:53:25,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:53:25,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:53:25,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:53:25,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:22" (1/3) ... [2019-10-14 23:53:25,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df76df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:25, skipping insertion in model container [2019-10-14 23:53:25,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:23" (2/3) ... [2019-10-14 23:53:25,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df76df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:25, skipping insertion in model container [2019-10-14 23:53:25,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:25" (3/3) ... [2019-10-14 23:53:25,226 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label15.c [2019-10-14 23:53:25,240 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:53:25,249 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:53:25,261 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:53:25,297 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:53:25,297 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:53:25,299 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:53:25,299 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:53:25,300 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:53:25,300 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:53:25,300 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:53:25,300 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:53:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:53:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:53:25,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:25,350 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] [2019-10-14 23:53:25,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash 78510191, now seen corresponding path program 1 times [2019-10-14 23:53:25,368 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:25,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755155789] [2019-10-14 23:53:25,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:25,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:25,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:25,876 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 23:53:25,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755155789] [2019-10-14 23:53:25,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:25,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:53:25,879 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681260830] [2019-10-14 23:53:25,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:53:25,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:25,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:53:25,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:53:25,908 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2019-10-14 23:53:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:26,915 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:53:26,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:26,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-14 23:53:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:26,948 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:53:26,949 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:53:26,962 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:53:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:53:27,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:53:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:53:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-10-14 23:53:27,037 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 87 [2019-10-14 23:53:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:27,037 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-10-14 23:53:27,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:53:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-10-14 23:53:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-14 23:53:27,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:27,043 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] [2019-10-14 23:53:27,043 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:27,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1666970376, now seen corresponding path program 1 times [2019-10-14 23:53:27,044 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:27,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537438269] [2019-10-14 23:53:27,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:27,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:27,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:27,206 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 23:53:27,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537438269] [2019-10-14 23:53:27,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:27,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:53:27,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524585299] [2019-10-14 23:53:27,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:53:27,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:53:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:53:27,217 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 6 states. [2019-10-14 23:53:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:28,014 INFO L93 Difference]: Finished difference Result 703 states and 1063 transitions. [2019-10-14 23:53:28,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:53:28,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-14 23:53:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:28,020 INFO L225 Difference]: With dead ends: 703 [2019-10-14 23:53:28,020 INFO L226 Difference]: Without dead ends: 431 [2019-10-14 23:53:28,022 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 23:53:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-10-14 23:53:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 417. [2019-10-14 23:53:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-14 23:53:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 609 transitions. [2019-10-14 23:53:28,052 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 609 transitions. Word has length 97 [2019-10-14 23:53:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:28,052 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 609 transitions. [2019-10-14 23:53:28,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:53:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 609 transitions. [2019-10-14 23:53:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:53:28,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:28,059 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:53:28,060 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:28,060 INFO L82 PathProgramCache]: Analyzing trace with hash -758839946, now seen corresponding path program 1 times [2019-10-14 23:53:28,060 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:28,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928239647] [2019-10-14 23:53:28,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:28,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:28,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:28,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928239647] [2019-10-14 23:53:28,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:28,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:53:28,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478867394] [2019-10-14 23:53:28,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:53:28,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:53:28,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:53:28,162 INFO L87 Difference]: Start difference. First operand 417 states and 609 transitions. Second operand 4 states. [2019-10-14 23:53:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:29,151 INFO L93 Difference]: Finished difference Result 1505 states and 2253 transitions. [2019-10-14 23:53:29,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:53:29,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-10-14 23:53:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:29,164 INFO L225 Difference]: With dead ends: 1505 [2019-10-14 23:53:29,164 INFO L226 Difference]: Without dead ends: 1094 [2019-10-14 23:53:29,166 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 [2019-10-14 23:53:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2019-10-14 23:53:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 959. [2019-10-14 23:53:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-14 23:53:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1314 transitions. [2019-10-14 23:53:29,258 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1314 transitions. Word has length 98 [2019-10-14 23:53:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:29,259 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1314 transitions. [2019-10-14 23:53:29,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:53:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1314 transitions. [2019-10-14 23:53:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-14 23:53:29,266 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:29,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:29,266 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:29,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1710985768, now seen corresponding path program 1 times [2019-10-14 23:53:29,267 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:29,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211007001] [2019-10-14 23:53:29,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:29,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:29,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:29,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211007001] [2019-10-14 23:53:29,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:29,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:53:29,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62459073] [2019-10-14 23:53:29,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:53:29,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:29,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:53:29,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:53:29,533 INFO L87 Difference]: Start difference. First operand 959 states and 1314 transitions. Second operand 7 states. [2019-10-14 23:53:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:30,557 INFO L93 Difference]: Finished difference Result 1938 states and 2679 transitions. [2019-10-14 23:53:30,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:53:30,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2019-10-14 23:53:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:30,564 INFO L225 Difference]: With dead ends: 1938 [2019-10-14 23:53:30,564 INFO L226 Difference]: Without dead ends: 985 [2019-10-14 23:53:30,566 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:53:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-10-14 23:53:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 697. [2019-10-14 23:53:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-14 23:53:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 908 transitions. [2019-10-14 23:53:30,595 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 908 transitions. Word has length 121 [2019-10-14 23:53:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:30,595 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 908 transitions. [2019-10-14 23:53:30,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:53:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 908 transitions. [2019-10-14 23:53:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-14 23:53:30,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:30,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:30,599 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:30,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1073963665, now seen corresponding path program 1 times [2019-10-14 23:53:30,600 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:30,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883825444] [2019-10-14 23:53:30,600 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:30,600 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:30,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:30,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883825444] [2019-10-14 23:53:30,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52642514] [2019-10-14 23:53:30,748 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 23:53:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:30,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:53:30,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:53:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:30,957 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:53:31,175 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-14 23:53:31,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:31,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [624865936] [2019-10-14 23:53:31,430 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 133 [2019-10-14 23:53:31,512 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:53:31,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)