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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:23:09,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:23:09,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:23:09,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:23:09,767 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:23:09,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:23:09,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:23:09,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:23:09,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:23:09,780 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:23:09,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:23:09,785 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:23:09,786 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:23:09,786 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:23:09,788 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:23:09,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:23:09,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:23:09,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:23:09,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:23:09,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:23:09,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:23:09,796 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:23:09,798 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 21:23:09,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:23:09,807 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:23:09,808 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:23:09,811 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:23:09,811 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:23:09,839 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:23:09,839 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:23:09,840 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:23:09,840 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:23:09,844 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:23:09,844 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:23:09,844 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:23:09,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:23:09,844 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:23:09,845 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:23:09,845 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:23:09,845 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:23:09,845 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:23:09,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:23:09,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:23:09,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:23:09,847 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:23:09,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:23:09,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:23:09,848 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:23:09,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:23:09,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:23:09,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:23:09,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:23:09,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:23:09,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:23:09,851 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:23:09,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:23:09,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:23:09,851 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:23:09,852 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:23:09,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:23:09,852 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:23:09,852 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:23:09,852 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:23:09,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:23:09,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:23:09,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:23:09,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:23:09,934 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:23:09,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c [2018-11-07 21:23:09,999 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15114a2c0/4ad920e7699e4ae2b76944738c512cf8/FLAG34a9ae027 [2018-11-07 21:23:10,856 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:23:10,857 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c [2018-11-07 21:23:10,899 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15114a2c0/4ad920e7699e4ae2b76944738c512cf8/FLAG34a9ae027 [2018-11-07 21:23:10,916 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15114a2c0/4ad920e7699e4ae2b76944738c512cf8 [2018-11-07 21:23:10,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:23:10,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:23:10,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:23:10,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:23:10,941 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:23:10,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:23:10" (1/1) ... [2018-11-07 21:23:10,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:10, skipping insertion in model container [2018-11-07 21:23:10,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:23:10" (1/1) ... [2018-11-07 21:23:10,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:23:11,245 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:23:13,254 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:23:13,259 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:23:14,404 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:23:14,469 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:23:14,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14 WrapperNode [2018-11-07 21:23:14,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:23:14,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:23:14,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:23:14,471 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:23:14,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:23:15,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:23:15,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:23:15,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:23:15,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (1/1) ... [2018-11-07 21:23:15,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:23:15,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:23:15,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:23:15,532 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:23:15,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (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 21:23:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:23:15,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:23:15,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:23:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:23:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:23:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:23:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:23:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:23:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:23:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:23:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:23:15,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:23:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:23:15,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:23:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:23:15,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:23:31,486 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:23:31,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:23:31 BoogieIcfgContainer [2018-11-07 21:23:31,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:23:31,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:23:31,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:23:31,491 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:23:31,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:23:10" (1/3) ... [2018-11-07 21:23:31,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8a3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:23:31, skipping insertion in model container [2018-11-07 21:23:31,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:14" (2/3) ... [2018-11-07 21:23:31,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8a3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:23:31, skipping insertion in model container [2018-11-07 21:23:31,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:23:31" (3/3) ... [2018-11-07 21:23:31,495 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label34_true-unreach-call.c [2018-11-07 21:23:31,506 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:23:31,516 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:23:31,531 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:23:31,593 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:23:31,593 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:23:31,594 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:23:31,594 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:23:31,594 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:23:31,594 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:23:31,594 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:23:31,594 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:23:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:23:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-07 21:23:31,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:23:31,669 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:23:31,672 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:23:31,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:23:31,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203938, now seen corresponding path program 1 times [2018-11-07 21:23:31,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:23:31,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:31,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:23:31,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:31,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:23:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:23:32,208 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:23:32,332 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 21:23:32,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:23:32,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:23:32,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:23:32,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:23:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:23:32,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:23:32,366 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 21:23:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:23:44,891 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-11-07 21:23:44,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:23:44,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-11-07 21:23:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:23:44,952 INFO L225 Difference]: With dead ends: 4999 [2018-11-07 21:23:44,952 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 21:23:44,970 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 21:23:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 21:23:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-11-07 21:23:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 21:23:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-11-07 21:23:45,193 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 57 [2018-11-07 21:23:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:23:45,194 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-11-07 21:23:45,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:23:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-11-07 21:23:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 21:23:45,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:23:45,202 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:23:45,203 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:23:45,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:23:45,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1018737494, now seen corresponding path program 1 times [2018-11-07 21:23:45,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:23:45,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:45,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:23:45,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:45,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:23:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:23:45,526 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:23:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:23:45,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:23:45,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:23:45,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:23:45,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:23:45,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:23:45,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:23:45,925 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-11-07 21:24:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:09,928 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-11-07 21:24:09,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:24:09,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-07 21:24:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:09,979 INFO L225 Difference]: With dead ends: 9331 [2018-11-07 21:24:09,979 INFO L226 Difference]: Without dead ends: 6122 [2018-11-07 21:24:09,990 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:24:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-11-07 21:24:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-11-07 21:24:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-11-07 21:24:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-11-07 21:24:10,136 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 129 [2018-11-07 21:24:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:10,137 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-11-07 21:24:10,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:24:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-11-07 21:24:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 21:24:10,141 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:10,142 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:24:10,142 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:10,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:10,142 INFO L82 PathProgramCache]: Analyzing trace with hash -65738260, now seen corresponding path program 1 times [2018-11-07 21:24:10,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:10,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:10,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:10,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:10,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:24:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:24:10,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:24:10,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:24:10,429 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:24:10,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:24:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:24:10,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:24:10,430 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-11-07 21:24:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:36,498 INFO L93 Difference]: Finished difference Result 24231 states and 39687 transitions. [2018-11-07 21:24:36,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:24:36,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 21:24:36,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:36,605 INFO L225 Difference]: With dead ends: 24231 [2018-11-07 21:24:36,605 INFO L226 Difference]: Without dead ends: 18153 [2018-11-07 21:24:36,647 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:24:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18153 states. [2018-11-07 21:24:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18153 to 18076. [2018-11-07 21:24:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18076 states. [2018-11-07 21:24:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18076 states to 18076 states and 25611 transitions. [2018-11-07 21:24:37,125 INFO L78 Accepts]: Start accepts. Automaton has 18076 states and 25611 transitions. Word has length 147 [2018-11-07 21:24:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:37,126 INFO L480 AbstractCegarLoop]: Abstraction has 18076 states and 25611 transitions. [2018-11-07 21:24:37,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:24:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 18076 states and 25611 transitions. [2018-11-07 21:24:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 21:24:37,137 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:37,137 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:37,138 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:37,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:37,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1608287919, now seen corresponding path program 1 times [2018-11-07 21:24:37,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:37,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:37,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:37,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:37,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:24:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:24:37,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:24:37,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:24:37,499 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:24:37,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:24:37,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:24:37,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:24:37,500 INFO L87 Difference]: Start difference. First operand 18076 states and 25611 transitions. Second operand 5 states. [2018-11-07 21:24:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:54,772 INFO L93 Difference]: Finished difference Result 56146 states and 84454 transitions. [2018-11-07 21:24:54,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:24:54,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-11-07 21:24:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:54,931 INFO L225 Difference]: With dead ends: 56146 [2018-11-07 21:24:54,932 INFO L226 Difference]: Without dead ends: 38076 [2018-11-07 21:24:55,008 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 21:24:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38076 states. [2018-11-07 21:24:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38076 to 36895. [2018-11-07 21:24:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36895 states. [2018-11-07 21:24:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36895 states to 36895 states and 49629 transitions. [2018-11-07 21:24:55,987 INFO L78 Accepts]: Start accepts. Automaton has 36895 states and 49629 transitions. Word has length 192 [2018-11-07 21:24:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:55,987 INFO L480 AbstractCegarLoop]: Abstraction has 36895 states and 49629 transitions. [2018-11-07 21:24:55,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:24:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 36895 states and 49629 transitions. [2018-11-07 21:24:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 21:24:55,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:55,998 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:24:55,998 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:55,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:55,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1511439822, now seen corresponding path program 1 times [2018-11-07 21:24:55,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:56,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:56,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:56,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:56,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:24:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:24:56,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:24:56,532 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:24:56,534 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 21:24:56,542 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5582], [5584], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:24:56,615 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:24:56,616 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:24:57,189 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:24:57,191 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:24:57,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:57,235 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:24:58,009 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 75.71% of their original sizes. [2018-11-07 21:24:58,009 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:24:58,377 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 21:24:58,377 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:24:58,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:24:58,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:24:58,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:24:58,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:24:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:24:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:24:58,380 INFO L87 Difference]: Start difference. First operand 36895 states and 49629 transitions. Second operand 7 states. [2018-11-07 21:25:04,268 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:25:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:25:57,076 INFO L93 Difference]: Finished difference Result 75176 states and 100848 transitions. [2018-11-07 21:25:57,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:25:57,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2018-11-07 21:25:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:25:57,181 INFO L225 Difference]: With dead ends: 75176 [2018-11-07 21:25:57,181 INFO L226 Difference]: Without dead ends: 38287 [2018-11-07 21:25:57,249 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:25:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38287 states. [2018-11-07 21:25:57,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38287 to 38285. [2018-11-07 21:25:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38285 states. [2018-11-07 21:25:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38285 states to 38285 states and 51035 transitions. [2018-11-07 21:25:57,969 INFO L78 Accepts]: Start accepts. Automaton has 38285 states and 51035 transitions. Word has length 212 [2018-11-07 21:25:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:25:57,970 INFO L480 AbstractCegarLoop]: Abstraction has 38285 states and 51035 transitions. [2018-11-07 21:25:57,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:25:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 38285 states and 51035 transitions. [2018-11-07 21:25:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-07 21:25:57,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:25:57,991 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:57,991 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:25:57,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:57,992 INFO L82 PathProgramCache]: Analyzing trace with hash 873582482, now seen corresponding path program 1 times [2018-11-07 21:25:57,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:25:57,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:57,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:25:57,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:57,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:25:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:26:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 156 proven. 138 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:26:00,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:26:00,117 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:26:00,117 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 453 with the following transitions: [2018-11-07 21:26:00,120 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5582], [5584], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:26:00,141 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:26:00,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:26:00,856 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:26:00,857 INFO L272 AbstractInterpreter]: Visited 249 different actions 491 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:26:00,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:26:00,895 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:26:01,982 INFO L227 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 75.84% of their original sizes. [2018-11-07 21:26:01,983 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:26:03,607 INFO L415 sIntCurrentIteration]: We unified 451 AI predicates to 451 [2018-11-07 21:26:03,608 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:26:03,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:26:03,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [5] total 32 [2018-11-07 21:26:03,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:26:03,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-07 21:26:03,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-07 21:26:03,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2018-11-07 21:26:03,610 INFO L87 Difference]: Start difference. First operand 38285 states and 51035 transitions. Second operand 29 states. [2018-11-07 21:26:28,943 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:26:41,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 21:26:41,124 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:26:41,129 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:26:41,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:26:41 BoogieIcfgContainer [2018-11-07 21:26:41,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:26:41,131 INFO L168 Benchmark]: Toolchain (without parser) took 210198.71 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,132 INFO L168 Benchmark]: CDTParser took 0.22 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 21:26:41,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3533.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,133 INFO L168 Benchmark]: Boogie Procedure Inliner took 546.53 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,135 INFO L168 Benchmark]: Boogie Preprocessor took 513.97 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,136 INFO L168 Benchmark]: RCFGBuilder took 15954.98 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 142.6 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 526.7 MB). Peak memory consumption was 669.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,137 INFO L168 Benchmark]: TraceAbstraction took 189642.17 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 399.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3533.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 546.53 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 513.97 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15954.98 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 142.6 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 526.7 MB). Peak memory consumption was 669.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189642.17 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 399.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (38285states) and FLOYD_HOARE automaton (currently 27 states, 29 states before enhancement),while ReachableStatesComputation was computing reachable states (7603 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 189.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 176.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4385 SDtfs, 29743 SDslu, 3563 SDs, 0 SdLazy, 49145 SolverSat, 10043 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 706 GetRequests, 640 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38285occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978363166672635 AbsIntWeakeningRatio, 0.09063444108761329 AbsIntAvgWeakeningVarsNumRemoved, 9.8202416918429 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1302 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1183 ConstructedInterpolants, 0 QuantifiedInterpolants, 988051 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 495/701 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown