java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label27_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:38:13,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:38:13,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:38:13,742 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:38:13,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:38:13,744 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:38:13,745 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:38:13,748 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:38:13,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:38:13,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:38:13,760 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:38:13,760 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:38:13,761 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:38:13,762 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:38:13,764 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:38:13,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:38:13,765 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:38:13,767 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:38:13,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:38:13,771 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:38:13,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:38:13,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:38:13,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:38:13,784 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:38:13,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:38:13,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:38:13,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:38:13,804 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:38:13,804 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:38:13,805 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:38:13,805 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:38:13,805 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:38:13,805 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:38:13,805 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:38:13,806 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:38:13,806 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:38:13,807 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:38:13,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:38:13,807 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:38:13,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:38:13,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:38:13,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:38:13,808 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:38:13,808 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:38:13,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:38:13,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:38:13,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:38:13,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:38:13,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:38:13,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:38:13,809 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:38:13,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:38:13,810 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:38:13,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:38:13,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:38:13,810 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:38:13,811 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:38:13,811 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:38:13,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:38:13,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:38:13,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:38:13,887 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:38:13,887 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:38:13,888 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label27_true-unreach-call_false-termination.c [2018-10-27 00:38:13,960 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8da13b2f/c48151ade85b4985949c0d1e13648714/FLAGe394b9f26 [2018-10-27 00:38:14,532 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:38:14,532 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label27_true-unreach-call_false-termination.c [2018-10-27 00:38:14,548 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8da13b2f/c48151ade85b4985949c0d1e13648714/FLAGe394b9f26 [2018-10-27 00:38:14,572 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8da13b2f/c48151ade85b4985949c0d1e13648714 [2018-10-27 00:38:14,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:38:14,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:38:14,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:38:14,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:38:14,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:38:14,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:38:14" (1/1) ... [2018-10-27 00:38:14,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:14, skipping insertion in model container [2018-10-27 00:38:14,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:38:14" (1/1) ... [2018-10-27 00:38:14,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:38:14,675 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:38:15,221 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:38:15,226 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:38:15,348 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:38:15,368 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:38:15,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15 WrapperNode [2018-10-27 00:38:15,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:38:15,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:38:15,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:38:15,370 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:38:15,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:38:15,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:38:15,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:38:15,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:38:15,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... [2018-10-27 00:38:15,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:38:15,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:38:15,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:38:15,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:38:15,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 00:38:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:38:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:38:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:38:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:38:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:38:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:38:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:38:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:38:19,117 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:38:19,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:38:19 BoogieIcfgContainer [2018-10-27 00:38:19,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:38:19,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:38:19,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:38:19,125 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:38:19,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:38:14" (1/3) ... [2018-10-27 00:38:19,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675dc5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:38:19, skipping insertion in model container [2018-10-27 00:38:19,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:38:15" (2/3) ... [2018-10-27 00:38:19,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675dc5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:38:19, skipping insertion in model container [2018-10-27 00:38:19,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:38:19" (3/3) ... [2018-10-27 00:38:19,131 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label27_true-unreach-call_false-termination.c [2018-10-27 00:38:19,141 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:38:19,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:38:19,164 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:38:19,203 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:38:19,204 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:38:19,204 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:38:19,204 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:38:19,204 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:38:19,204 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:38:19,204 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:38:19,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:38:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-27 00:38:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-27 00:38:19,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:38:19,245 INFO L375 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] [2018-10-27 00:38:19,247 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:38:19,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:38:19,254 INFO L82 PathProgramCache]: Analyzing trace with hash 933673069, now seen corresponding path program 1 times [2018-10-27 00:38:19,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:38:19,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:19,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:38:19,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:19,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:38:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:38:19,894 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 00:38:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:38:20,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:38:20,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:38:20,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:38:20,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:38:20,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:38:20,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:38:20,169 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2018-10-27 00:38:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:38:22,307 INFO L93 Difference]: Finished difference Result 702 states and 1227 transitions. [2018-10-27 00:38:22,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:38:22,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-10-27 00:38:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:38:22,333 INFO L225 Difference]: With dead ends: 702 [2018-10-27 00:38:22,333 INFO L226 Difference]: Without dead ends: 488 [2018-10-27 00:38:22,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:38:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2018-10-27 00:38:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 340. [2018-10-27 00:38:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-27 00:38:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 565 transitions. [2018-10-27 00:38:22,417 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 565 transitions. Word has length 95 [2018-10-27 00:38:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:38:22,418 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 565 transitions. [2018-10-27 00:38:22,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:38:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 565 transitions. [2018-10-27 00:38:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-27 00:38:22,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:38:22,426 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:38:22,426 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:38:22,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:38:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2037295790, now seen corresponding path program 1 times [2018-10-27 00:38:22,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:38:22,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:22,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:38:22,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:22,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:38:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:38:22,706 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:38:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:38:22,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:38:22,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:38:22,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:38:22,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:38:22,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:38:22,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:38:22,956 INFO L87 Difference]: Start difference. First operand 340 states and 565 transitions. Second operand 6 states. [2018-10-27 00:38:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:38:24,958 INFO L93 Difference]: Finished difference Result 1070 states and 1865 transitions. [2018-10-27 00:38:24,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:38:24,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-10-27 00:38:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:38:24,972 INFO L225 Difference]: With dead ends: 1070 [2018-10-27 00:38:24,973 INFO L226 Difference]: Without dead ends: 736 [2018-10-27 00:38:24,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:38:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-10-27 00:38:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 719. [2018-10-27 00:38:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2018-10-27 00:38:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1163 transitions. [2018-10-27 00:38:25,044 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1163 transitions. Word has length 106 [2018-10-27 00:38:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:38:25,044 INFO L481 AbstractCegarLoop]: Abstraction has 719 states and 1163 transitions. [2018-10-27 00:38:25,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:38:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1163 transitions. [2018-10-27 00:38:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-27 00:38:25,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:38:25,050 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:38:25,050 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:38:25,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:38:25,051 INFO L82 PathProgramCache]: Analyzing trace with hash 420402650, now seen corresponding path program 1 times [2018-10-27 00:38:25,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:38:25,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:25,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:38:25,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:25,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:38:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:38:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:38:25,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:38:25,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:38:25,239 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:38:25,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:38:25,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:38:25,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:38:25,246 INFO L87 Difference]: Start difference. First operand 719 states and 1163 transitions. Second operand 3 states. [2018-10-27 00:38:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:38:27,513 INFO L93 Difference]: Finished difference Result 2065 states and 3447 transitions. [2018-10-27 00:38:27,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:38:27,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2018-10-27 00:38:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:38:27,529 INFO L225 Difference]: With dead ends: 2065 [2018-10-27 00:38:27,529 INFO L226 Difference]: Without dead ends: 1352 [2018-10-27 00:38:27,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:38:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2018-10-27 00:38:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1345. [2018-10-27 00:38:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2018-10-27 00:38:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2085 transitions. [2018-10-27 00:38:27,598 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2085 transitions. Word has length 107 [2018-10-27 00:38:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:38:27,598 INFO L481 AbstractCegarLoop]: Abstraction has 1345 states and 2085 transitions. [2018-10-27 00:38:27,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:38:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2085 transitions. [2018-10-27 00:38:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-27 00:38:27,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:38:27,603 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:38:27,604 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:38:27,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:38:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash -820743182, now seen corresponding path program 1 times [2018-10-27 00:38:27,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:38:27,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:27,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:38:27,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:27,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:38:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:38:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:38:27,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:38:27,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:38:27,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:38:27,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:38:27,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:38:27,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:38:27,820 INFO L87 Difference]: Start difference. First operand 1345 states and 2085 transitions. Second operand 6 states. [2018-10-27 00:38:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:38:29,847 INFO L93 Difference]: Finished difference Result 4143 states and 6680 transitions. [2018-10-27 00:38:29,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:38:29,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-27 00:38:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:38:29,871 INFO L225 Difference]: With dead ends: 4143 [2018-10-27 00:38:29,871 INFO L226 Difference]: Without dead ends: 2804 [2018-10-27 00:38:29,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:38:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2018-10-27 00:38:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2778. [2018-10-27 00:38:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2018-10-27 00:38:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4132 transitions. [2018-10-27 00:38:29,991 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4132 transitions. Word has length 119 [2018-10-27 00:38:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:38:29,991 INFO L481 AbstractCegarLoop]: Abstraction has 2778 states and 4132 transitions. [2018-10-27 00:38:29,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:38:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4132 transitions. [2018-10-27 00:38:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 00:38:29,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:38:29,998 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-27 00:38:29,998 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:38:29,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:38:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1178183073, now seen corresponding path program 1 times [2018-10-27 00:38:29,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:38:30,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:30,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:38:30,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:38:30,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:38:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:38:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:38:30,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:38:30,169 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:38:30,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-27 00:38:30,172 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-27 00:38:30,241 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:38:30,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:39:05,766 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:39:05,767 INFO L272 AbstractInterpreter]: Visited 99 different actions 164 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-27 00:39:05,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:39:05,779 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:39:15,843 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 81.46% of their original sizes. [2018-10-27 00:39:15,843 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:40:20,709 INFO L415 sIntCurrentIteration]: We unified 130 AI predicates to 130 [2018-10-27 00:40:20,710 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:40:20,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:40:20,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 00:40:20,711 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:40:20,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 00:40:20,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 00:40:20,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-10-27 00:40:20,713 INFO L87 Difference]: Start difference. First operand 2778 states and 4132 transitions. Second operand 19 states. Received shutdown request... [2018-10-27 00:42:33,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-27 00:42:33,883 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:42:33,889 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:42:33,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:42:33 BoogieIcfgContainer [2018-10-27 00:42:33,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:42:33,890 INFO L168 Benchmark]: Toolchain (without parser) took 259305.09 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 4.1 GB in the end (delta: -2.7 GB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:42:33,892 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:42:33,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:42:33,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 242.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:42:33,894 INFO L168 Benchmark]: Boogie Preprocessor took 70.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:42:33,895 INFO L168 Benchmark]: RCFGBuilder took 3435.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 7.1 GB. [2018-10-27 00:42:33,896 INFO L168 Benchmark]: TraceAbstraction took 254767.90 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 4.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:42:33,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 242.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3435.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254767.90 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 4.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 440]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 440). Cancelled while BasicCegarLoop was constructing difference of abstraction (2778states) and FLOYD_HOARE automaton (currently 24 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (330 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 254.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 141.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 443 SDtfs, 2287 SDslu, 363 SDs, 0 SdLazy, 3215 SolverSat, 824 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 82.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2778occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 35.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9931921736799786 AbsIntWeakeningRatio, 0.2692307692307692 AbsIntAvgWeakeningVarsNumRemoved, 187.41538461538462 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 180923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 78/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown