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/Problem13_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:26:50,753 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:26:50,755 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:26:50,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:26:50,767 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:26:50,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:26:50,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:26:50,771 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:26:50,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:26:50,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:26:50,774 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:26:50,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:26:50,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:26:50,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:26:50,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:26:50,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:26:50,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:26:50,781 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:26:50,784 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:26:50,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:26:50,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:26:50,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:26:50,792 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:26:50,801 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 01:26:50,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:26:50,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:26:50,828 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:26:50,828 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:26:50,829 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:26:50,829 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:26:50,829 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:26:50,829 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:26:50,829 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:26:50,829 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:26:50,829 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:26:50,830 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:26:50,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:26:50,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:26:50,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:26:50,830 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:26:50,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:26:50,832 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:26:50,832 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:26:50,832 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:26:50,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:26:50,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:26:50,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:26:50,833 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:26:50,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:26:50,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:26:50,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:26:50,834 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:26:50,834 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:26:50,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:26:50,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:26:50,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:26:50,835 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:26:50,835 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:26:50,887 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:26:50,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:26:50,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:26:50,905 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:26:50,906 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:26:50,907 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-10-24 01:26:50,969 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c11355c/c251a1cb312e4935899a4e15bcb6e712/FLAG97d807228 [2018-10-24 01:26:51,856 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:26:51,857 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-10-24 01:26:51,906 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c11355c/c251a1cb312e4935899a4e15bcb6e712/FLAG97d807228 [2018-10-24 01:26:51,927 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c11355c/c251a1cb312e4935899a4e15bcb6e712 [2018-10-24 01:26:51,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:26:51,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:26:51,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:26:51,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:26:51,948 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:26:51,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:26:51" (1/1) ... [2018-10-24 01:26:51,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7897d110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:51, skipping insertion in model container [2018-10-24 01:26:51,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:26:51" (1/1) ... [2018-10-24 01:26:51,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:26:52,148 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:26:53,728 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:26:53,733 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:26:54,623 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:26:54,661 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:26:54,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54 WrapperNode [2018-10-24 01:26:54,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:26:54,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:26:54,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:26:54,664 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:26:54,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:54,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:26:55,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:26:55,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:26:55,304 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:26:55,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (1/1) ... [2018-10-24 01:26:55,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:26:55,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:26:55,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:26:55,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:26:55,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (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 01:26:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:26:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:26:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:26:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:26:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:26:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:26:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:26:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:26:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:26:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:26:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:26:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:26:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:26:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:27:07,252 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:27:07,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:27:07 BoogieIcfgContainer [2018-10-24 01:27:07,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:27:07,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:27:07,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:27:07,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:27:07,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:26:51" (1/3) ... [2018-10-24 01:27:07,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132efe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:27:07, skipping insertion in model container [2018-10-24 01:27:07,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:54" (2/3) ... [2018-10-24 01:27:07,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132efe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:27:07, skipping insertion in model container [2018-10-24 01:27:07,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:27:07" (3/3) ... [2018-10-24 01:27:07,261 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27_true-unreach-call.c [2018-10-24 01:27:07,271 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:27:07,281 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:27:07,299 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:27:07,349 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:27:07,350 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:27:07,350 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:27:07,350 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:27:07,350 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:27:07,350 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:27:07,351 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:27:07,351 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:27:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:27:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 01:27:07,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:07,420 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] [2018-10-24 01:27:07,423 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:07,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1638036668, now seen corresponding path program 1 times [2018-10-24 01:27:07,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:07,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:07,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:07,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:07,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:07,975 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:27:08,076 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 01:27:08,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:27:08,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:27:08,079 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:08,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:27:08,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:27:08,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:27:08,105 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 01:27:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:27:17,448 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-10-24 01:27:17,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:27:17,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2018-10-24 01:27:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:27:17,490 INFO L225 Difference]: With dead ends: 3104 [2018-10-24 01:27:17,491 INFO L226 Difference]: Without dead ends: 1982 [2018-10-24 01:27:17,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:27:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-10-24 01:27:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-10-24 01:27:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-10-24 01:27:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-10-24 01:27:17,675 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 52 [2018-10-24 01:27:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:27:17,676 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-10-24 01:27:17,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:27:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-10-24 01:27:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 01:27:17,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:17,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:17,694 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:17,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:17,695 INFO L82 PathProgramCache]: Analyzing trace with hash -228599944, now seen corresponding path program 1 times [2018-10-24 01:27:17,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:17,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:17,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:17,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:17,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:27:18,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:27:18,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:27:18,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:18,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:27:18,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:27:18,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:27:18,010 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-10-24 01:27:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:27:33,587 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-10-24 01:27:33,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:27:33,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-24 01:27:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:27:33,614 INFO L225 Difference]: With dead ends: 5645 [2018-10-24 01:27:33,615 INFO L226 Difference]: Without dead ends: 3686 [2018-10-24 01:27:33,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:27:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-10-24 01:27:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-10-24 01:27:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-10-24 01:27:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5961 transitions. [2018-10-24 01:27:33,735 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5961 transitions. Word has length 122 [2018-10-24 01:27:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:27:33,736 INFO L481 AbstractCegarLoop]: Abstraction has 3654 states and 5961 transitions. [2018-10-24 01:27:33,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:27:33,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5961 transitions. [2018-10-24 01:27:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 01:27:33,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:33,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:33,744 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:33,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1612728044, now seen corresponding path program 1 times [2018-10-24 01:27:33,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:33,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:33,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:33,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:33,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:27:34,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:27:34,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:27:34,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:34,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:27:34,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:27:34,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:27:34,048 INFO L87 Difference]: Start difference. First operand 3654 states and 5961 transitions. Second operand 5 states. [2018-10-24 01:27:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:27:47,966 INFO L93 Difference]: Finished difference Result 10941 states and 18369 transitions. [2018-10-24 01:27:47,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:27:47,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-10-24 01:27:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:27:48,018 INFO L225 Difference]: With dead ends: 10941 [2018-10-24 01:27:48,018 INFO L226 Difference]: Without dead ends: 7293 [2018-10-24 01:27:48,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:27:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2018-10-24 01:27:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 7138. [2018-10-24 01:27:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7138 states. [2018-10-24 01:27:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 10867 transitions. [2018-10-24 01:27:48,251 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 10867 transitions. Word has length 124 [2018-10-24 01:27:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:27:48,251 INFO L481 AbstractCegarLoop]: Abstraction has 7138 states and 10867 transitions. [2018-10-24 01:27:48,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:27:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 10867 transitions. [2018-10-24 01:27:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 01:27:48,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:48,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:48,257 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:48,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:48,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1125748408, now seen corresponding path program 1 times [2018-10-24 01:27:48,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:48,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:48,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:48,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:48,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 01:27:48,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:27:48,578 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:27:48,579 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-10-24 01:27:48,581 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:27:48,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:27:48,655 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:27:53,229 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:27:53,231 INFO L272 AbstractInterpreter]: Visited 98 different actions 98 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:27:53,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:53,273 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:27:56,941 INFO L232 lantSequenceWeakener]: Weakened 131 states. On average, predicates are now at 72.31% of their original sizes. [2018-10-24 01:27:56,941 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:27:58,529 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:27:58,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:27:58,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 01:27:58,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:58,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 01:27:58,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 01:27:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:27:58,532 INFO L87 Difference]: Start difference. First operand 7138 states and 10867 transitions. Second operand 10 states. [2018-10-24 01:28:28,613 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown