java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem13_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:08:56,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:08:56,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:08:56,699 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:08:56,699 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:08:56,700 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:08:56,701 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:08:56,703 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:08:56,705 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:08:56,706 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:08:56,707 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:08:56,707 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:08:56,708 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:08:56,709 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:08:56,710 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:08:56,711 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:08:56,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:08:56,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:08:56,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:08:56,726 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:08:56,727 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:08:56,728 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:08:56,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:08:56,742 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:08:56,742 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:08:56,745 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:08:56,746 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:08:56,746 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:08:56,777 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:08:56,777 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:08:56,779 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:08:56,779 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:08:56,779 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:08:56,779 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:08:56,780 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:08:56,780 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:08:56,780 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:08:56,780 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:08:56,780 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:08:56,780 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:08:56,781 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:08:56,782 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:08:56,782 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:08:56,782 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:08:56,782 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:08:56,782 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:08:56,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:08:56,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:08:56,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:08:56,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:08:56,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:08:56,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:08:56,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:08:56,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:08:56,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:08:56,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:08:56,787 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:08:56,787 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:08:56,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:08:56,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:08:56,787 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:08:56,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:08:56,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:08:56,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:08:56,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:08:56,866 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:08:56,866 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:08:56,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-11-07 00:08:56,927 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bec0041c/7452ba46ca034f5ca3de9fd8f3c69011/FLAGc96131a9c [2018-11-07 00:08:57,784 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:08:57,785 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-11-07 00:08:57,831 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bec0041c/7452ba46ca034f5ca3de9fd8f3c69011/FLAGc96131a9c [2018-11-07 00:08:57,856 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bec0041c/7452ba46ca034f5ca3de9fd8f3c69011 [2018-11-07 00:08:57,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:08:57,872 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:08:57,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:08:57,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:08:57,878 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:08:57,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:08:57" (1/1) ... [2018-11-07 00:08:57,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c9c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:08:57, skipping insertion in model container [2018-11-07 00:08:57,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:08:57" (1/1) ... [2018-11-07 00:08:57,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:08:58,094 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:08:59,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:08:59,619 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:09:00,355 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:09:00,400 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:09:00,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00 WrapperNode [2018-11-07 00:09:00,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:09:00,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:09:00,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:09:00,403 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:09:00,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:00,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:00,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:09:00,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:09:00,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:09:00,827 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:09:00,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:00,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:00,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:00,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:01,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:01,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:01,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (1/1) ... [2018-11-07 00:09:01,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:09:01,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:09:01,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:09:01,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:09:01,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (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 [2018-11-07 00:09:01,204 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:09:01,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:09:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:09:01,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:09:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:09:01,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:09:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:09:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:09:01,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:09:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:09:01,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:09:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:09:01,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:09:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:09:01,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:09:13,688 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:09:13,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:09:13 BoogieIcfgContainer [2018-11-07 00:09:13,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:09:13,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:09:13,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:09:13,694 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:09:13,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:08:57" (1/3) ... [2018-11-07 00:09:13,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e2b683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:09:13, skipping insertion in model container [2018-11-07 00:09:13,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:00" (2/3) ... [2018-11-07 00:09:13,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e2b683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:09:13, skipping insertion in model container [2018-11-07 00:09:13,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:09:13" (3/3) ... [2018-11-07 00:09:13,697 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label04_false-unreach-call.c [2018-11-07 00:09:13,708 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:09:13,718 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:09:13,737 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:09:13,789 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:09:13,789 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:09:13,789 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:09:13,789 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:09:13,789 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:09:13,790 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:09:13,790 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:09:13,790 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:09:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 00:09:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 00:09:13,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:09:13,861 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] [2018-11-07 00:09:13,864 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:09:13,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:09:13,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1342939469, now seen corresponding path program 1 times [2018-11-07 00:09:13,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:09:13,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:13,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:09:13,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:13,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:09:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:09:14,278 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:09:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:09:14,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:09:14,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:09:14,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:09:14,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:09:14,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:09:14,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:09:14,418 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 00:09:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:09:23,271 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 00:09:23,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:09:23,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-07 00:09:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:09:23,308 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 00:09:23,308 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 00:09:23,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:09:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 00:09:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 00:09:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 00:09:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 00:09:23,493 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 23 [2018-11-07 00:09:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:09:23,493 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 00:09:23,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:09:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 00:09:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 00:09:23,504 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:09:23,504 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:09:23,506 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:09:23,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:09:23,506 INFO L82 PathProgramCache]: Analyzing trace with hash 555017698, now seen corresponding path program 1 times [2018-11-07 00:09:23,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:09:23,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:23,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:09:23,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:23,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:09:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:09:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:09:23,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:09:23,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:09:23,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:09:23,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:09:23,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:09:23,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:09:23,883 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 00:09:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:09:37,835 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-07 00:09:37,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:09:37,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-11-07 00:09:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:09:37,867 INFO L225 Difference]: With dead ends: 5733 [2018-11-07 00:09:37,867 INFO L226 Difference]: Without dead ends: 3765 [2018-11-07 00:09:37,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:09:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-07 00:09:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-07 00:09:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-07 00:09:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-07 00:09:38,013 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 99 [2018-11-07 00:09:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:09:38,014 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-07 00:09:38,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:09:38,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-07 00:09:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 00:09:38,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:09:38,025 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:09:38,025 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:09:38,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:09:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash 684637502, now seen corresponding path program 1 times [2018-11-07 00:09:38,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:09:38,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:38,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:09:38,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:38,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:09:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:09:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:09:38,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:09:38,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:09:38,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:09:38,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:09:38,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:09:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:09:38,293 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-07 00:09:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:09:54,869 INFO L93 Difference]: Finished difference Result 13645 states and 21724 transitions. [2018-11-07 00:09:54,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:09:54,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-11-07 00:09:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:09:54,932 INFO L225 Difference]: With dead ends: 13645 [2018-11-07 00:09:54,933 INFO L226 Difference]: Without dead ends: 9969 [2018-11-07 00:09:54,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:09:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2018-11-07 00:09:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9779. [2018-11-07 00:09:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9779 states. [2018-11-07 00:09:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 14476 transitions. [2018-11-07 00:09:55,231 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 14476 transitions. Word has length 113 [2018-11-07 00:09:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:09:55,232 INFO L480 AbstractCegarLoop]: Abstraction has 9779 states and 14476 transitions. [2018-11-07 00:09:55,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:09:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 14476 transitions. [2018-11-07 00:09:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 00:09:55,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:09:55,237 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:09:55,237 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:09:55,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:09:55,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1575492386, now seen corresponding path program 1 times [2018-11-07 00:09:55,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:09:55,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:55,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:09:55,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:55,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:09:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:09:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:09:55,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:09:55,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:09:55,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:09:55,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:09:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:09:55,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:09:55,541 INFO L87 Difference]: Start difference. First operand 9779 states and 14476 transitions. Second operand 6 states. [2018-11-07 00:10:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:08,134 INFO L93 Difference]: Finished difference Result 34106 states and 53595 transitions. [2018-11-07 00:10:08,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:10:08,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 00:10:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:08,277 INFO L225 Difference]: With dead ends: 34106 [2018-11-07 00:10:08,277 INFO L226 Difference]: Without dead ends: 24333 [2018-11-07 00:10:08,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:10:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24333 states. [2018-11-07 00:10:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24333 to 24112. [2018-11-07 00:10:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24112 states. [2018-11-07 00:10:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24112 states to 24112 states and 33946 transitions. [2018-11-07 00:10:08,979 INFO L78 Accepts]: Start accepts. Automaton has 24112 states and 33946 transitions. Word has length 131 [2018-11-07 00:10:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:08,980 INFO L480 AbstractCegarLoop]: Abstraction has 24112 states and 33946 transitions. [2018-11-07 00:10:08,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:10:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 24112 states and 33946 transitions. [2018-11-07 00:10:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 00:10:08,985 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:08,985 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:10:08,986 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:08,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:08,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1082707378, now seen corresponding path program 1 times [2018-11-07 00:10:08,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:08,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:08,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:08,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:08,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:10:09,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:10:09,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:10:09,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:10:09,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:10:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:10:09,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:10:09,217 INFO L87 Difference]: Start difference. First operand 24112 states and 33946 transitions. Second operand 4 states. [2018-11-07 00:10:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:19,407 INFO L93 Difference]: Finished difference Result 66550 states and 99676 transitions. [2018-11-07 00:10:19,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:10:19,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-11-07 00:10:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:19,582 INFO L225 Difference]: With dead ends: 66550 [2018-11-07 00:10:19,582 INFO L226 Difference]: Without dead ends: 42444 [2018-11-07 00:10:19,652 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:10:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42444 states. [2018-11-07 00:10:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42444 to 42389. [2018-11-07 00:10:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42389 states. [2018-11-07 00:10:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42389 states to 42389 states and 59714 transitions. [2018-11-07 00:10:20,633 INFO L78 Accepts]: Start accepts. Automaton has 42389 states and 59714 transitions. Word has length 139 [2018-11-07 00:10:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:20,634 INFO L480 AbstractCegarLoop]: Abstraction has 42389 states and 59714 transitions. [2018-11-07 00:10:20,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:10:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 42389 states and 59714 transitions. [2018-11-07 00:10:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 00:10:20,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:20,666 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:10:20,666 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:20,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash 859998952, now seen corresponding path program 1 times [2018-11-07 00:10:20,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:20,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:20,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:20,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:20,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:21,289 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-11-07 00:10:21,649 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 00:10:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 48 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 00:10:21,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:10:21,969 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:10:21,969 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-07 00:10:21,978 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2711], [2713], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 00:10:22,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:10:22,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:10:26,806 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:10:33,028 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:10:33,030 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:10:33,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:33,042 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:10:38,978 INFO L227 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 71.12% of their original sizes. [2018-11-07 00:10:38,978 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:10:40,451 INFO L415 sIntCurrentIteration]: We unified 270 AI predicates to 270 [2018-11-07 00:10:40,451 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:10:40,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:10:40,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 00:10:40,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:10:40,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 00:10:40,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 00:10:40,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:10:40,454 INFO L87 Difference]: Start difference. First operand 42389 states and 59714 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 00:12:36,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:12:36,765 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:12:36,770 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:12:36,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:12:36 BoogieIcfgContainer [2018-11-07 00:12:36,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:12:36,772 INFO L168 Benchmark]: Toolchain (without parser) took 218902.13 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -679.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 00:12:36,773 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:12:36,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2528.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:12:36,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 424.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:12:36,776 INFO L168 Benchmark]: Boogie Preprocessor took 302.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:12:36,777 INFO L168 Benchmark]: RCFGBuilder took 12559.95 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 165.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 9.1 MB). Peak memory consumption was 674.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:12:36,778 INFO L168 Benchmark]: TraceAbstraction took 203080.59 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 138.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 00:12:36,784 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2528.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 424.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 302.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12559.95 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 165.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 9.1 MB). Peak memory consumption was 674.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203080.59 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 138.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (42389states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (4379 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 202.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 179.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2726 SDtfs, 16191 SDslu, 2408 SDs, 0 SdLazy, 29144 SolverSat, 7566 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 138.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 311 GetRequests, 275 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42389occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958290598290597 AbsIntWeakeningRatio, 0.12222222222222222 AbsIntAvgWeakeningVarsNumRemoved, 47.84814814814815 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 550 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 550648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 198/342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown