java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:41:08,774 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:41:08,776 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:41:08,788 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:41:08,788 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:41:08,789 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:41:08,791 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:41:08,792 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:41:08,794 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:41:08,795 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:41:08,796 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:41:08,796 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:41:08,797 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:41:08,798 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:41:08,799 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:41:08,800 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:41:08,801 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:41:08,803 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:41:08,805 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:41:08,807 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:41:08,808 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:41:08,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:41:08,811 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:41:08,825 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:41:08,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:41:08,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:41:08,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:41:08,846 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:41:08,846 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:41:08,847 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:41:08,847 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:41:08,847 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:41:08,847 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:41:08,848 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:41:08,848 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:41:08,848 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:41:08,849 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:41:08,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:41:08,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:41:08,849 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:41:08,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:41:08,850 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:41:08,850 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:41:08,850 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:41:08,850 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:41:08,850 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:41:08,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:41:08,851 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:41:08,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:41:08,851 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:41:08,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:41:08,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:41:08,852 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:41:08,852 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:41:08,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:41:08,852 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:41:08,852 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:41:08,853 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:41:08,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:41:08,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:41:08,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:41:08,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:41:08,919 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:41:08,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-11-07 03:41:08,981 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc860ec5/f472e49c4674402d8aed135fdfd3e516/FLAG1fca0c06c [2018-11-07 03:41:09,704 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:41:09,705 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-11-07 03:41:09,731 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc860ec5/f472e49c4674402d8aed135fdfd3e516/FLAG1fca0c06c [2018-11-07 03:41:09,749 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc860ec5/f472e49c4674402d8aed135fdfd3e516 [2018-11-07 03:41:09,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:41:09,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:41:09,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:41:09,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:41:09,769 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:41:09,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:09" (1/1) ... [2018-11-07 03:41:09,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c60cb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:09, skipping insertion in model container [2018-11-07 03:41:09,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:09" (1/1) ... [2018-11-07 03:41:09,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:41:09,874 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:41:10,572 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:41:10,576 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:41:10,827 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:41:10,850 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:41:10,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10 WrapperNode [2018-11-07 03:41:10,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:41:10,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:41:10,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:41:10,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:41:10,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:41:11,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:41:11,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:41:11,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:41:11,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... [2018-11-07 03:41:11,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:41:11,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:41:11,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:41:11,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:41:11,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:41:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:41:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:41:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:41:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:41:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:41:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:41:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:41:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:41:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:41:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:41:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:41:17,642 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:41:17,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:41:17 BoogieIcfgContainer [2018-11-07 03:41:17,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:41:17,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:41:17,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:41:17,648 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:41:17,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:41:09" (1/3) ... [2018-11-07 03:41:17,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c4f6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:41:17, skipping insertion in model container [2018-11-07 03:41:17,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:10" (2/3) ... [2018-11-07 03:41:17,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c4f6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:41:17, skipping insertion in model container [2018-11-07 03:41:17,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:41:17" (3/3) ... [2018-11-07 03:41:17,652 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label07_true-unreach-call.c [2018-11-07 03:41:17,661 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:41:17,669 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:41:17,686 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:41:17,740 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:41:17,740 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:41:17,740 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:41:17,740 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:41:17,741 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:41:17,741 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:41:17,741 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:41:17,741 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:41:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 03:41:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 03:41:17,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:41:17,799 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:41:17,802 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:41:17,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:17,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1432875621, now seen corresponding path program 1 times [2018-11-07 03:41:17,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:41:17,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:17,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:41:17,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:17,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:41:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:41:18,368 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:41:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:41:18,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:41:18,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:41:18,543 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:41:18,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:41:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:41:18,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:41:18,569 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 03:41:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:41:21,926 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 03:41:21,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:41:21,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 03:41:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:41:21,955 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 03:41:21,955 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 03:41:21,967 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:41:21,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 03:41:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 03:41:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 03:41:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-07 03:41:22,090 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 61 [2018-11-07 03:41:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:41:22,091 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-07 03:41:22,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:41:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-07 03:41:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 03:41:22,100 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:41:22,101 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:41:22,101 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:41:22,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1517109448, now seen corresponding path program 1 times [2018-11-07 03:41:22,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:41:22,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:22,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:41:22,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:22,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:41:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:41:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:41:22,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:41:22,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:41:22,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:41:22,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:41:22,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:41:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:41:22,685 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-07 03:41:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:41:33,270 INFO L93 Difference]: Finished difference Result 2959 states and 5503 transitions. [2018-11-07 03:41:33,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:41:33,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-07 03:41:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:41:33,299 INFO L225 Difference]: With dead ends: 2959 [2018-11-07 03:41:33,300 INFO L226 Difference]: Without dead ends: 2221 [2018-11-07 03:41:33,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:41:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2018-11-07 03:41:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2175. [2018-11-07 03:41:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2018-11-07 03:41:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3686 transitions. [2018-11-07 03:41:33,441 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3686 transitions. Word has length 137 [2018-11-07 03:41:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:41:33,442 INFO L480 AbstractCegarLoop]: Abstraction has 2175 states and 3686 transitions. [2018-11-07 03:41:33,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:41:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3686 transitions. [2018-11-07 03:41:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 03:41:33,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:41:33,454 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:41:33,456 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:41:33,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash -726077568, now seen corresponding path program 1 times [2018-11-07 03:41:33,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:41:33,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:33,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:41:33,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:33,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:41:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:41:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:41:33,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:41:33,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:41:33,735 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:41:33,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:41:33,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:41:33,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:41:33,738 INFO L87 Difference]: Start difference. First operand 2175 states and 3686 transitions. Second operand 6 states. [2018-11-07 03:41:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:41:38,983 INFO L93 Difference]: Finished difference Result 8068 states and 14526 transitions. [2018-11-07 03:41:38,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:41:38,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-11-07 03:41:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:41:39,029 INFO L225 Difference]: With dead ends: 8068 [2018-11-07 03:41:39,029 INFO L226 Difference]: Without dead ends: 5899 [2018-11-07 03:41:39,067 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:41:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2018-11-07 03:41:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 5820. [2018-11-07 03:41:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5820 states. [2018-11-07 03:41:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8984 transitions. [2018-11-07 03:41:39,275 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8984 transitions. Word has length 141 [2018-11-07 03:41:39,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:41:39,276 INFO L480 AbstractCegarLoop]: Abstraction has 5820 states and 8984 transitions. [2018-11-07 03:41:39,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:41:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8984 transitions. [2018-11-07 03:41:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 03:41:39,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:41:39,285 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:41:39,285 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:41:39,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:39,286 INFO L82 PathProgramCache]: Analyzing trace with hash 664486408, now seen corresponding path program 1 times [2018-11-07 03:41:39,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:41:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:39,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:41:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:39,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:41:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:41:39,570 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:41:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:41:39,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:41:39,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:41:39,779 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:41:39,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:41:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:41:39,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:41:39,780 INFO L87 Difference]: Start difference. First operand 5820 states and 8984 transitions. Second operand 6 states. [2018-11-07 03:41:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:41:42,616 INFO L93 Difference]: Finished difference Result 13535 states and 22072 transitions. [2018-11-07 03:41:42,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:41:42,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-11-07 03:41:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:41:42,678 INFO L225 Difference]: With dead ends: 13535 [2018-11-07 03:41:42,679 INFO L226 Difference]: Without dead ends: 7721 [2018-11-07 03:41:42,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:41:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2018-11-07 03:41:42,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 7645. [2018-11-07 03:41:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7645 states. [2018-11-07 03:41:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7645 states to 7645 states and 11476 transitions. [2018-11-07 03:41:42,952 INFO L78 Accepts]: Start accepts. Automaton has 7645 states and 11476 transitions. Word has length 177 [2018-11-07 03:41:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:41:42,953 INFO L480 AbstractCegarLoop]: Abstraction has 7645 states and 11476 transitions. [2018-11-07 03:41:42,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:41:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7645 states and 11476 transitions. [2018-11-07 03:41:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-07 03:41:42,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:41:42,967 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:41:42,968 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:41:42,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1642365103, now seen corresponding path program 1 times [2018-11-07 03:41:42,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:41:42,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:42,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:41:42,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:42,970 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:41:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:41:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 108 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:41:43,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:41:43,303 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:41:43,304 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-11-07 03:41:43,306 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [720], [721], [725], [728], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 03:41:43,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:41:43,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:41:45,665 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:41:45,745 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:41:45,747 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:41:45,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:45,782 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:41:47,726 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 78.26% of their original sizes. [2018-11-07 03:41:47,727 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:41:48,085 INFO L415 sIntCurrentIteration]: We unified 226 AI predicates to 226 [2018-11-07 03:41:48,085 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:41:48,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:41:48,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:41:48,087 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:41:48,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:41:48,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:41:48,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:41:48,088 INFO L87 Difference]: Start difference. First operand 7645 states and 11476 transitions. Second operand 7 states. [2018-11-07 03:42:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:42:42,193 INFO L93 Difference]: Finished difference Result 15624 states and 23442 transitions. [2018-11-07 03:42:42,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:42:42,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2018-11-07 03:42:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:42:42,243 INFO L225 Difference]: With dead ends: 15624 [2018-11-07 03:42:42,243 INFO L226 Difference]: Without dead ends: 7985 [2018-11-07 03:42:42,274 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:42:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2018-11-07 03:42:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7983. [2018-11-07 03:42:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7983 states. [2018-11-07 03:42:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 11824 transitions. [2018-11-07 03:42:42,509 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 11824 transitions. Word has length 227 [2018-11-07 03:42:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:42:42,509 INFO L480 AbstractCegarLoop]: Abstraction has 7983 states and 11824 transitions. [2018-11-07 03:42:42,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:42:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 11824 transitions. [2018-11-07 03:42:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 03:42:42,519 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:42,519 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 03:42:42,520 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:42,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1867363835, now seen corresponding path program 1 times [2018-11-07 03:42:42,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:42,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:42,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:42,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:42,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:43,080 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:42:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 03:42:43,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:42:43,525 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:42:43,526 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-07 03:42:43,526 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [728], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 03:42:43,536 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:42:43,536 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:42:44,587 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:42:52,991 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:42:52,991 INFO L272 AbstractInterpreter]: Visited 100 different actions 381 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:42:53,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:53,003 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:42:55,326 INFO L227 lantSequenceWeakener]: Weakened 51 states. On average, predicates are now at 80.21% of their original sizes. [2018-11-07 03:42:55,327 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:43:31,133 INFO L415 sIntCurrentIteration]: We unified 236 AI predicates to 236 [2018-11-07 03:43:31,133 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:43:31,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:43:31,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-11-07 03:43:31,135 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:31,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 03:43:31,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 03:43:31,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 03:43:31,136 INFO L87 Difference]: Start difference. First operand 7983 states and 11824 transitions. Second operand 14 states. Received shutdown request... [2018-11-07 03:44:57,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 03:44:57,107 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:44:57,113 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:44:57,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:44:57 BoogieIcfgContainer [2018-11-07 03:44:57,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:44:57,114 INFO L168 Benchmark]: Toolchain (without parser) took 227351.45 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 03:44:57,115 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:44:57,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1086.28 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:57,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 231.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:57,118 INFO L168 Benchmark]: Boogie Preprocessor took 192.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:44:57,118 INFO L168 Benchmark]: RCFGBuilder took 6366.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 267.4 MB). Peak memory consumption was 267.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:57,119 INFO L168 Benchmark]: TraceAbstraction took 219469.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -795.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:44:57,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1086.28 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 231.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 192.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6366.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 267.4 MB). Peak memory consumption was 267.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219469.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -795.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (7983states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (1187 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 219.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 162.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 933 SDtfs, 7022 SDslu, 780 SDs, 0 SdLazy, 11534 SolverSat, 2691 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 505 GetRequests, 392 SyntacticMatches, 66 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 38.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7983occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952631909153647 AbsIntWeakeningRatio, 0.11255411255411256 AbsIntAvgWeakeningVarsNumRemoved, 643.2597402597403 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 203 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 974 ConstructedInterpolants, 0 QuantifiedInterpolants, 634468 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 453/544 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown