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/Problem11_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:04:19,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:04:19,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:04:19,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:04:19,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:04:19,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:04:19,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:04:19,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:04:19,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:04:19,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:04:19,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:04:19,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:04:19,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:04:19,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:04:19,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:04:19,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:04:19,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:04:19,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:04:19,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:04:19,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:04:19,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:04:19,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:04:19,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:04:19,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:04:19,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:04:19,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:04:19,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:04:19,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:04:19,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:04:19,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:04:19,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:04:19,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:04:19,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:04:19,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:04:19,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:04:19,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:04:19,657 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 20:04:19,684 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:04:19,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:04:19,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:04:19,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:04:19,686 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:04:19,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:04:19,687 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:04:19,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:04:19,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:04:19,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:04:19,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:04:19,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:04:19,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:04:19,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:04:19,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:04:19,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:04:19,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:04:19,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:04:19,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:04:19,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:04:19,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:04:19,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:04:19,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:04:19,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:04:19,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:04:19,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:04:19,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:04:19,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:04:19,691 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 20:04:19,957 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:04:19,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:04:19,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:04:19,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:04:19,987 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:04:19,988 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label26.c [2019-10-13 20:04:20,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95b94ee7e/b6db9f39837b4ccfb119d268ce8ce8ed/FLAG0b37b7e22 [2019-10-13 20:04:20,675 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:04:20,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label26.c [2019-10-13 20:04:20,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95b94ee7e/b6db9f39837b4ccfb119d268ce8ce8ed/FLAG0b37b7e22 [2019-10-13 20:04:20,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95b94ee7e/b6db9f39837b4ccfb119d268ce8ce8ed [2019-10-13 20:04:20,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:04:20,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:04:20,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:04:20,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:04:20,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:04:20,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:20" (1/1) ... [2019-10-13 20:04:20,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3a515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:20, skipping insertion in model container [2019-10-13 20:04:20,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:20" (1/1) ... [2019-10-13 20:04:20,949 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:04:21,008 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:04:21,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:04:21,743 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:04:21,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:04:21,931 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:04:21,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21 WrapperNode [2019-10-13 20:04:21,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:04:21,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:04:21,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:04:21,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:04:21,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:21,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:21,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:21,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:22,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:22,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:22,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (1/1) ... [2019-10-13 20:04:22,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:04:22,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:04:22,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:04:22,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:04:22,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (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 20:04:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:04:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:04:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:04:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:04:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:04:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:04:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:04:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:04:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:04:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:04:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:04:24,560 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:04:24,561 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:04:24,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:24 BoogieIcfgContainer [2019-10-13 20:04:24,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:04:24,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:04:24,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:04:24,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:04:24,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:04:20" (1/3) ... [2019-10-13 20:04:24,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7ed60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:24, skipping insertion in model container [2019-10-13 20:04:24,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:21" (2/3) ... [2019-10-13 20:04:24,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7ed60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:24, skipping insertion in model container [2019-10-13 20:04:24,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:24" (3/3) ... [2019-10-13 20:04:24,588 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label26.c [2019-10-13 20:04:24,600 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:04:24,610 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:04:24,623 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:04:24,665 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:04:24,665 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:04:24,666 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:04:24,666 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:04:24,666 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:04:24,666 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:04:24,666 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:04:24,667 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:04:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-13 20:04:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 20:04:24,747 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:04:24,748 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] [2019-10-13 20:04:24,750 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:04:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:04:24,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2020342670, now seen corresponding path program 1 times [2019-10-13 20:04:24,769 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:04:24,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098957209] [2019-10-13 20:04:24,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:24,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:24,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:04:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:04:25,123 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 20:04:25,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098957209] [2019-10-13 20:04:25,125 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:04:25,125 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:04:25,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65261086] [2019-10-13 20:04:25,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:04:25,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:04:25,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:04:25,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:04:25,150 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2019-10-13 20:04:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:04:26,735 INFO L93 Difference]: Finished difference Result 779 states and 1369 transitions. [2019-10-13 20:04:26,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:04:26,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-10-13 20:04:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:04:26,769 INFO L225 Difference]: With dead ends: 779 [2019-10-13 20:04:26,769 INFO L226 Difference]: Without dead ends: 425 [2019-10-13 20:04:26,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:04:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2019-10-13 20:04:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 420. [2019-10-13 20:04:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-10-13 20:04:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 672 transitions. [2019-10-13 20:04:26,874 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 672 transitions. Word has length 45 [2019-10-13 20:04:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:04:26,875 INFO L462 AbstractCegarLoop]: Abstraction has 420 states and 672 transitions. [2019-10-13 20:04:26,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:04:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 672 transitions. [2019-10-13 20:04:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 20:04:26,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:04:26,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:26,882 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:04:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:04:26,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1793518198, now seen corresponding path program 1 times [2019-10-13 20:04:26,883 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:04:26,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761218316] [2019-10-13 20:04:26,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:26,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:26,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:04:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:04:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:04:27,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761218316] [2019-10-13 20:04:27,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:04:27,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:04:27,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954865797] [2019-10-13 20:04:27,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:04:27,074 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:04:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:04:27,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:04:27,075 INFO L87 Difference]: Start difference. First operand 420 states and 672 transitions. Second operand 3 states. [2019-10-13 20:04:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:04:28,236 INFO L93 Difference]: Finished difference Result 1217 states and 1972 transitions. [2019-10-13 20:04:28,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:04:28,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 20:04:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:04:28,244 INFO L225 Difference]: With dead ends: 1217 [2019-10-13 20:04:28,244 INFO L226 Difference]: Without dead ends: 803 [2019-10-13 20:04:28,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:04:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-10-13 20:04:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2019-10-13 20:04:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-13 20:04:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1166 transitions. [2019-10-13 20:04:28,296 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1166 transitions. Word has length 119 [2019-10-13 20:04:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:04:28,298 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1166 transitions. [2019-10-13 20:04:28,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:04:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1166 transitions. [2019-10-13 20:04:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 20:04:28,302 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:04:28,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:28,303 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:04:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:04:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash 406650521, now seen corresponding path program 1 times [2019-10-13 20:04:28,304 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:04:28,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266122023] [2019-10-13 20:04:28,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:28,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:28,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:04:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:04:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:04:28,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266122023] [2019-10-13 20:04:28,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:04:28,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:04:28,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114844472] [2019-10-13 20:04:28,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:04:28,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:04:28,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:04:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:04:28,560 INFO L87 Difference]: Start difference. First operand 803 states and 1166 transitions. Second operand 6 states. [2019-10-13 20:04:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:04:31,106 INFO L93 Difference]: Finished difference Result 2977 states and 4579 transitions. [2019-10-13 20:04:31,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:04:31,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-13 20:04:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:04:31,125 INFO L225 Difference]: With dead ends: 2977 [2019-10-13 20:04:31,125 INFO L226 Difference]: Without dead ends: 2180 [2019-10-13 20:04:31,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 20:04:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2019-10-13 20:04:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1978. [2019-10-13 20:04:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1978 states. [2019-10-13 20:04:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2771 transitions. [2019-10-13 20:04:31,212 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2771 transitions. Word has length 130 [2019-10-13 20:04:31,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:04:31,212 INFO L462 AbstractCegarLoop]: Abstraction has 1978 states and 2771 transitions. [2019-10-13 20:04:31,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:04:31,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2771 transitions. [2019-10-13 20:04:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-13 20:04:31,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:04:31,222 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, 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] [2019-10-13 20:04:31,222 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:04:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:04:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash 622607653, now seen corresponding path program 1 times [2019-10-13 20:04:31,223 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:04:31,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527034614] [2019-10-13 20:04:31,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:31,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:04:31,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:04:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:04:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:04:31,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527034614] [2019-10-13 20:04:31,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486716951] [2019-10-13 20:04:31,485 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 20:04:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:04:31,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 20:04:31,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:04:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:04:31,705 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:04:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:04:31,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [692028916] [2019-10-13 20:04:31,933 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 209 [2019-10-13 20:04:31,994 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 20:04:31,995 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)