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/Problem12_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:05:08,585 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:05:08,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:05:08,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:05:08,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:05:08,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:05:08,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:05:08,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:05:08,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:05:08,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:05:08,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:05:08,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:05:08,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:05:08,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:05:08,631 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:05:08,632 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:05:08,634 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:05:08,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:05:08,641 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:05:08,642 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:05:08,643 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:05:08,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:05:08,649 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:05:08,661 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:05:08,662 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:05:08,663 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:05:08,664 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:05:08,665 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 00:05:08,692 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:05:08,693 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:05:08,694 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:05:08,694 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:05:08,694 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:05:08,694 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:05:08,695 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:05:08,695 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:05:08,695 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:05:08,695 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:05:08,695 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:05:08,696 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:05:08,696 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:05:08,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:05:08,697 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:05:08,697 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:05:08,697 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:05:08,697 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:05:08,697 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:05:08,698 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:05:08,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:05:08,698 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:05:08,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:05:08,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:05:08,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:05:08,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:05:08,699 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:05:08,699 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:05:08,700 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:05:08,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:05:08,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:05:08,700 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:05:08,700 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:05:08,701 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:05:08,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:05:08,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:05:08,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:05:08,780 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:05:08,780 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:05:08,781 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label28_false-unreach-call.c [2018-11-07 00:05:08,854 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c5ed565/1949909a2a074e408f6eb5cff680f6a4/FLAG35fbf1f56 [2018-11-07 00:05:09,606 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:05:09,607 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label28_false-unreach-call.c [2018-11-07 00:05:09,646 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c5ed565/1949909a2a074e408f6eb5cff680f6a4/FLAG35fbf1f56 [2018-11-07 00:05:09,669 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c5ed565/1949909a2a074e408f6eb5cff680f6a4 [2018-11-07 00:05:09,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:05:09,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:05:09,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:05:09,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:05:09,691 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:05:09,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:09" (1/1) ... [2018-11-07 00:05:09,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1144d31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:09, skipping insertion in model container [2018-11-07 00:05:09,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:09" (1/1) ... [2018-11-07 00:05:09,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:05:09,888 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:05:11,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:05:11,170 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:05:11,799 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:05:11,836 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:05:11,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11 WrapperNode [2018-11-07 00:05:11,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:05:11,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:05:11,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:05:11,839 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:05:11,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:05:12,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:05:12,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:05:12,210 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:05:12,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (1/1) ... [2018-11-07 00:05:12,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:05:12,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:05:12,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:05:12,523 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:05:12,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (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 00:05:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:05:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:05:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:05:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:05:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:05:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:05:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:05:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:05:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:05:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:05:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:05:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:05:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:05:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:05:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:05:20,923 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:05:20,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:20 BoogieIcfgContainer [2018-11-07 00:05:20,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:05:20,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:05:20,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:05:20,929 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:05:20,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:05:09" (1/3) ... [2018-11-07 00:05:20,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd6123b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:20, skipping insertion in model container [2018-11-07 00:05:20,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:11" (2/3) ... [2018-11-07 00:05:20,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd6123b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:20, skipping insertion in model container [2018-11-07 00:05:20,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:20" (3/3) ... [2018-11-07 00:05:20,932 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label28_false-unreach-call.c [2018-11-07 00:05:20,943 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:05:20,952 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:05:20,969 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:05:21,018 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:05:21,018 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:05:21,018 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:05:21,018 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:05:21,019 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:05:21,019 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:05:21,019 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:05:21,019 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:05:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 00:05:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 00:05:21,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:21,078 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] [2018-11-07 00:05:21,080 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:21,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:21,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1508157813, now seen corresponding path program 1 times [2018-11-07 00:05:21,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:21,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:21,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:21,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:21,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:21,688 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 00:05:21,700 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 00:05:21,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:21,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:05:21,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:21,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:05:21,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:05:21,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:05:21,761 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 00:05:33,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:05:33,398 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 00:05:33,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:05:33,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-07 00:05:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:05:33,441 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 00:05:33,441 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 00:05:33,454 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 00:05:33,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 00:05:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-11-07 00:05:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 00:05:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-11-07 00:05:33,628 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 27 [2018-11-07 00:05:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:05:33,629 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-11-07 00:05:33,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:05:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-11-07 00:05:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-07 00:05:33,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:33,636 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:05:33,636 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:33,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:33,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1692088656, now seen corresponding path program 1 times [2018-11-07 00:05:33,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:33,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:33,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:33,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:33,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:34,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:34,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:05:34,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:34,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:05:34,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:05:34,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:05:34,087 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-11-07 00:05:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:05:45,230 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-11-07 00:05:45,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:05:45,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-11-07 00:05:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:05:45,265 INFO L225 Difference]: With dead ends: 4873 [2018-11-07 00:05:45,266 INFO L226 Difference]: Without dead ends: 3275 [2018-11-07 00:05:45,271 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:05:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-11-07 00:05:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-11-07 00:05:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-11-07 00:05:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-11-07 00:05:45,394 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 107 [2018-11-07 00:05:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:05:45,396 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-11-07 00:05:45,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:05:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-11-07 00:05:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 00:05:45,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:45,405 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:05:45,406 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:45,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash 712593337, now seen corresponding path program 1 times [2018-11-07 00:05:45,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:45,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:45,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:45,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:45,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:45,690 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:05:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:45,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:45,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:05:45,763 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:45,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:05:45,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:05:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:05:45,764 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-11-07 00:05:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:05:57,434 INFO L93 Difference]: Finished difference Result 12867 states and 19653 transitions. [2018-11-07 00:05:57,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:05:57,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 00:05:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:05:57,490 INFO L225 Difference]: With dead ends: 12867 [2018-11-07 00:05:57,490 INFO L226 Difference]: Without dead ends: 9632 [2018-11-07 00:05:57,509 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 00:05:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-11-07 00:05:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9564. [2018-11-07 00:05:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9564 states. [2018-11-07 00:05:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 13820 transitions. [2018-11-07 00:05:57,757 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 13820 transitions. Word has length 136 [2018-11-07 00:05:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:05:57,758 INFO L480 AbstractCegarLoop]: Abstraction has 9564 states and 13820 transitions. [2018-11-07 00:05:57,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:05:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 13820 transitions. [2018-11-07 00:05:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 00:05:57,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:57,763 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 00:05:57,763 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:57,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:57,764 INFO L82 PathProgramCache]: Analyzing trace with hash 44914193, now seen corresponding path program 1 times [2018-11-07 00:05:57,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:57,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:57,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:57,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:57,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:58,090 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:05:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:58,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:58,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:05:58,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:58,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:05:58,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:05:58,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:05:58,198 INFO L87 Difference]: Start difference. First operand 9564 states and 13820 transitions. Second operand 6 states. [2018-11-07 00:06:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:05,696 INFO L93 Difference]: Finished difference Result 25925 states and 39265 transitions. [2018-11-07 00:06:05,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:05,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-07 00:06:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:05,777 INFO L225 Difference]: With dead ends: 25925 [2018-11-07 00:06:05,777 INFO L226 Difference]: Without dead ends: 16367 [2018-11-07 00:06:05,804 INFO L604 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 [2018-11-07 00:06:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16367 states. [2018-11-07 00:06:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16367 to 16193. [2018-11-07 00:06:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16193 states. [2018-11-07 00:06:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16193 states to 16193 states and 23401 transitions. [2018-11-07 00:06:06,191 INFO L78 Accepts]: Start accepts. Automaton has 16193 states and 23401 transitions. Word has length 148 [2018-11-07 00:06:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:06,191 INFO L480 AbstractCegarLoop]: Abstraction has 16193 states and 23401 transitions. [2018-11-07 00:06:06,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:06:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 16193 states and 23401 transitions. [2018-11-07 00:06:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 00:06:06,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:06,194 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:06:06,195 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:06,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:06,195 INFO L82 PathProgramCache]: Analyzing trace with hash 948159193, now seen corresponding path program 1 times [2018-11-07 00:06:06,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:06,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:06,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:06,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:06,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:06:06,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:06:06,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:06:06,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:06,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:06:06,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:06:06,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:06:06,450 INFO L87 Difference]: Start difference. First operand 16193 states and 23401 transitions. Second operand 6 states. [2018-11-07 00:06:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:13,720 INFO L93 Difference]: Finished difference Result 39155 states and 58321 transitions. [2018-11-07 00:06:13,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:13,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-07 00:06:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:13,842 INFO L225 Difference]: With dead ends: 39155 [2018-11-07 00:06:13,842 INFO L226 Difference]: Without dead ends: 22968 [2018-11-07 00:06:13,890 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 00:06:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22968 states. [2018-11-07 00:06:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22968 to 22819. [2018-11-07 00:06:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22819 states. [2018-11-07 00:06:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 31296 transitions. [2018-11-07 00:06:14,397 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 31296 transitions. Word has length 152 [2018-11-07 00:06:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:14,398 INFO L480 AbstractCegarLoop]: Abstraction has 22819 states and 31296 transitions. [2018-11-07 00:06:14,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:06:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 31296 transitions. [2018-11-07 00:06:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 00:06:14,401 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:14,402 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:06:14,402 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:14,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:14,402 INFO L82 PathProgramCache]: Analyzing trace with hash 563531764, now seen corresponding path program 1 times [2018-11-07 00:06:14,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:14,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:14,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:14,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:14,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:14,693 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:06:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 00:06:14,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:06:14,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:06:14,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-11-07 00:06:14,946 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1983], [1985], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 00:06:15,028 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:06:15,028 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:06:20,703 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:06:39,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:06:39,981 INFO L272 AbstractInterpreter]: Visited 153 different actions 447 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:06:39,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:39,991 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:06:42,431 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 76.04% of their original sizes. [2018-11-07 00:06:42,432 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:06:47,744 INFO L415 sIntCurrentIteration]: We unified 172 AI predicates to 172 [2018-11-07 00:06:47,745 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:06:47,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:06:47,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-11-07 00:06:47,746 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:47,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 00:06:47,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 00:06:47,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-07 00:06:47,747 INFO L87 Difference]: Start difference. First operand 22819 states and 31296 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 00:08:54,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 00:08:54,255 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:08:54,260 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:08:54,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:08:54 BoogieIcfgContainer [2018-11-07 00:08:54,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:08:54,262 INFO L168 Benchmark]: Toolchain (without parser) took 224577.18 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:08:54,263 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-07 00:08:54,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2150.41 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:54,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 371.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:54,266 INFO L168 Benchmark]: Boogie Preprocessor took 312.09 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:54,267 INFO L168 Benchmark]: RCFGBuilder took 8401.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 653.6 MB). Peak memory consumption was 653.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:54,267 INFO L168 Benchmark]: TraceAbstraction took 213335.87 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 2.5 GB in the end (delta: -911.8 MB). Peak memory consumption was 915.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:54,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2150.41 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 371.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 312.09 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8401.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 653.6 MB). Peak memory consumption was 653.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213335.87 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 2.5 GB in the end (delta: -911.8 MB). Peak memory consumption was 915.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (22819states) and FLOYD_HOARE automaton (currently 15 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (6053 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 213.2s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 176.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1293 SDtfs, 16768 SDslu, 1270 SDs, 0 SdLazy, 29578 SolverSat, 6242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 225 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22819occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 25.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9948211091234346 AbsIntWeakeningRatio, 0.12209302325581395 AbsIntAvgWeakeningVarsNumRemoved, 838.75 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 1209 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 743 NumberOfCodeBlocks, 743 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 737 ConstructedInterpolants, 0 QuantifiedInterpolants, 438740 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 84/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown