java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:23:39,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:23:39,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:23:39,632 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:23:39,633 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:23:39,634 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:23:39,635 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:23:39,637 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:23:39,639 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:23:39,640 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:23:39,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:23:39,641 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:23:39,642 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:23:39,643 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:23:39,644 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:23:39,645 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:23:39,646 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:23:39,648 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:23:39,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:23:39,651 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:23:39,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:23:39,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:23:39,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:23:39,664 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:23:39,679 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:23:39,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:23:39,680 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:23:39,681 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:23:39,681 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:23:39,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:23:39,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:23:39,681 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:23:39,682 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:23:39,682 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:23:39,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:23:39,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:23:39,683 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:23:39,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:23:39,684 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:23:39,684 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:23:39,684 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:23:39,684 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:23:39,684 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:23:39,685 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:23:39,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:23:39,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:23:39,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:23:39,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:23:39,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:23:39,686 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:23:39,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:23:39,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:23:39,686 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:23:39,687 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:23:39,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:23:39,687 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:23:39,687 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:23:39,687 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:23:39,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:23:39,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:23:39,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:23:39,767 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:23:39,767 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:23:39,768 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-10-24 22:23:39,839 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8feba12c7/e9455d7f52cd4b50bccaca64e39a1227/FLAG254fdc5ab [2018-10-24 22:23:40,599 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:23:40,600 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-10-24 22:23:40,629 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8feba12c7/e9455d7f52cd4b50bccaca64e39a1227/FLAG254fdc5ab [2018-10-24 22:23:40,650 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8feba12c7/e9455d7f52cd4b50bccaca64e39a1227 [2018-10-24 22:23:40,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:23:40,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:23:40,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:23:40,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:23:40,678 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:23:40,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:23:40" (1/1) ... [2018-10-24 22:23:40,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4a8908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:40, skipping insertion in model container [2018-10-24 22:23:40,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:23:40" (1/1) ... [2018-10-24 22:23:40,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:23:40,844 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:23:41,856 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:23:41,861 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:23:42,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:23:42,397 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:23:42,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42 WrapperNode [2018-10-24 22:23:42,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:23:42,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:23:42,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:23:42,399 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:23:42,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:42,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:42,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:23:42,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:23:42,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:23:42,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:23:42,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:42,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:42,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:42,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:43,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:43,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:43,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... [2018-10-24 22:23:43,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:23:43,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:23:43,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:23:43,099 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:23:43,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:23:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:23:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:23:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:23:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:23:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:23:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:23:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:23:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:23:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:23:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:23:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:23:43,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:23:51,036 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:23:51,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:23:51 BoogieIcfgContainer [2018-10-24 22:23:51,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:23:51,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:23:51,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:23:51,044 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:23:51,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:23:40" (1/3) ... [2018-10-24 22:23:51,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47037c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:23:51, skipping insertion in model container [2018-10-24 22:23:51,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:42" (2/3) ... [2018-10-24 22:23:51,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47037c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:23:51, skipping insertion in model container [2018-10-24 22:23:51,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:23:51" (3/3) ... [2018-10-24 22:23:51,048 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label56_true-unreach-call.c [2018-10-24 22:23:51,059 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:23:51,068 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:23:51,087 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:23:51,137 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:23:51,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:23:51,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:23:51,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:23:51,138 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:23:51,138 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:23:51,138 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:23:51,139 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:23:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:23:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-24 22:23:51,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:51,198 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] [2018-10-24 22:23:51,201 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:51,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:51,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1650138055, now seen corresponding path program 1 times [2018-10-24 22:23:51,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:51,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:51,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:51,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:51,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:51,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:23:51,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:23:51,746 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:51,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:23:51,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:23:51,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:23:51,776 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 22:24:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:24:03,236 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 22:24:03,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:24:03,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-24 22:24:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:24:03,291 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 22:24:03,292 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 22:24:03,307 INFO L605 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 [2018-10-24 22:24:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 22:24:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-24 22:24:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-24 22:24:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-10-24 22:24:03,510 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 55 [2018-10-24 22:24:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:24:03,510 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-10-24 22:24:03,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:24:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-10-24 22:24:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 22:24:03,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:24:03,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:24:03,519 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:24:03,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:03,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1840391000, now seen corresponding path program 1 times [2018-10-24 22:24:03,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:24:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:03,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:24:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:03,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:24:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:24:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:24:03,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:24:03,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:24:03,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:24:03,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:24:03,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:24:03,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:24:03,771 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-10-24 22:24:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:24:14,835 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-10-24 22:24:14,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:24:14,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-24 22:24:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:24:14,876 INFO L225 Difference]: With dead ends: 6600 [2018-10-24 22:24:14,876 INFO L226 Difference]: Without dead ends: 4413 [2018-10-24 22:24:14,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:24:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-24 22:24:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-24 22:24:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-24 22:24:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-10-24 22:24:15,040 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 125 [2018-10-24 22:24:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:24:15,041 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-10-24 22:24:15,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:24:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-10-24 22:24:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 22:24:15,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:24:15,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:24:15,048 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:24:15,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1923458833, now seen corresponding path program 1 times [2018-10-24 22:24:15,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:24:15,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:15,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:24:15,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:15,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:24:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:24:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:24:15,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:24:15,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:24:15,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:24:15,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:24:15,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:24:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:24:15,460 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-10-24 22:24:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:24:20,917 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-10-24 22:24:20,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:24:20,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-24 22:24:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:24:20,972 INFO L225 Difference]: With dead ends: 11002 [2018-10-24 22:24:20,972 INFO L226 Difference]: Without dead ends: 6630 [2018-10-24 22:24:20,990 INFO L605 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 [2018-10-24 22:24:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-24 22:24:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-24 22:24:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-24 22:24:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-10-24 22:24:21,194 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 152 [2018-10-24 22:24:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:24:21,194 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-10-24 22:24:21,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:24:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-10-24 22:24:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-24 22:24:21,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:24:21,200 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, 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] [2018-10-24 22:24:21,200 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:24:21,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:21,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1294774890, now seen corresponding path program 1 times [2018-10-24 22:24:21,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:24:21,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:21,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:24:21,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:21,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:24:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:24:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 22:24:21,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:24:21,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:24:21,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:24:21,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:24:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:24:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:24:21,460 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-10-24 22:24:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:24:28,917 INFO L93 Difference]: Finished difference Result 26034 states and 37031 transitions. [2018-10-24 22:24:28,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:24:28,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-10-24 22:24:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:24:29,015 INFO L225 Difference]: With dead ends: 26034 [2018-10-24 22:24:29,015 INFO L226 Difference]: Without dead ends: 19450 [2018-10-24 22:24:29,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:24:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2018-10-24 22:24:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19450. [2018-10-24 22:24:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19450 states. [2018-10-24 22:24:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 25983 transitions. [2018-10-24 22:24:29,556 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 25983 transitions. Word has length 232 [2018-10-24 22:24:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:24:29,557 INFO L481 AbstractCegarLoop]: Abstraction has 19450 states and 25983 transitions. [2018-10-24 22:24:29,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:24:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 25983 transitions. [2018-10-24 22:24:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 22:24:29,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:24:29,570 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, 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] [2018-10-24 22:24:29,570 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:24:29,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2023127083, now seen corresponding path program 1 times [2018-10-24 22:24:29,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:24:29,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:29,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:24:29,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:29,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:24:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:24:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:24:30,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:24:30,196 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:24:30,199 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-24 22:24:30,201 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:24:30,287 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:24:30,288 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:24:33,028 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:24:33,030 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:24:33,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:33,039 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:24:34,964 INFO L232 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 78.09% of their original sizes. [2018-10-24 22:24:34,964 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:24:35,247 INFO L413 sIntCurrentIteration]: We have 238 unified AI predicates [2018-10-24 22:24:35,247 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:24:35,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:24:35,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:24:35,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:24:35,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:24:35,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:24:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:24:35,251 INFO L87 Difference]: Start difference. First operand 19450 states and 25983 transitions. Second operand 7 states. [2018-10-24 22:24:43,917 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:26:23,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:26:23,343 INFO L93 Difference]: Finished difference Result 39599 states and 52734 transitions. [2018-10-24 22:26:23,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:26:23,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2018-10-24 22:26:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:26:23,405 INFO L225 Difference]: With dead ends: 39599 [2018-10-24 22:26:23,406 INFO L226 Difference]: Without dead ends: 20155 [2018-10-24 22:26:23,448 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:26:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2018-10-24 22:26:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20153. [2018-10-24 22:26:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-10-24 22:26:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26698 transitions. [2018-10-24 22:26:23,857 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26698 transitions. Word has length 239 [2018-10-24 22:26:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:26:23,858 INFO L481 AbstractCegarLoop]: Abstraction has 20153 states and 26698 transitions. [2018-10-24 22:26:23,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:26:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26698 transitions. [2018-10-24 22:26:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-24 22:26:23,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:26:23,871 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:26:23,872 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:26:23,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:26:23,872 INFO L82 PathProgramCache]: Analyzing trace with hash -577564023, now seen corresponding path program 1 times [2018-10-24 22:26:23,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:26:23,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:26:23,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:26:23,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:26:23,874 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:26:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:26:24,386 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:26:24,593 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:26:24,817 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:26:25,257 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 22:26:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 203 proven. 197 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:26:25,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:26:25,864 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:26:25,864 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-10-24 22:26:25,865 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:26:25,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:26:25,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:26:37,330 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:26:37,330 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:26:37,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:26:37,374 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:26:40,760 INFO L232 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 78.43% of their original sizes. [2018-10-24 22:26:40,761 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:27:15,074 INFO L413 sIntCurrentIteration]: We have 425 unified AI predicates [2018-10-24 22:27:15,074 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:27:15,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:27:15,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-24 22:27:15,075 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:27:15,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 22:27:15,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 22:27:15,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-24 22:27:15,076 INFO L87 Difference]: Start difference. First operand 20153 states and 26698 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 22:27:23,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:27:23,694 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:27:23,701 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:27:23,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:27:23 BoogieIcfgContainer [2018-10-24 22:27:23,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:27:23,702 INFO L168 Benchmark]: Toolchain (without parser) took 223035.17 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 458.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:27:23,703 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:27:23,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1724.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:27:23,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 477.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -976.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:27:23,706 INFO L168 Benchmark]: Boogie Preprocessor took 222.64 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:27:23,706 INFO L168 Benchmark]: RCFGBuilder took 7940.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 510.0 MB). Peak memory consumption was 510.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:27:23,707 INFO L168 Benchmark]: TraceAbstraction took 212661.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:27:23,713 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1724.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 477.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -976.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.64 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7940.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 510.0 MB). Peak memory consumption was 510.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212661.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (20153states) and FLOYD_HOARE automaton (currently 9 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (56 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 152.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2116 SDtfs, 9357 SDslu, 866 SDs, 0 SdLazy, 19524 SolverSat, 4838 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 698 GetRequests, 586 SyntacticMatches, 72 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 34.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20153occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9963139659431218 AbsIntWeakeningRatio, 0.08748114630467571 AbsIntAvgWeakeningVarsNumRemoved, 729.3831070889894 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1229 NumberOfCodeBlocks, 1229 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1223 ConstructedInterpolants, 0 QuantifiedInterpolants, 1870432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 641/840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown