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/Problem03_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:42:10,768 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:42:10,770 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:42:10,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:42:10,784 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:42:10,785 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:42:10,786 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:42:10,788 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:42:10,790 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:42:10,791 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:42:10,791 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:42:10,792 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:42:10,793 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:42:10,794 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:42:10,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:42:10,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:42:10,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:42:10,799 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:42:10,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:42:10,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:42:10,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:42:10,805 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:42:10,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:42:10,817 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 19:42:10,834 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:42:10,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:42:10,835 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:42:10,835 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:42:10,836 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:42:10,836 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:42:10,836 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:42:10,836 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:42:10,836 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:42:10,837 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:42:10,837 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:42:10,837 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:42:10,838 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:42:10,838 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:42:10,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:42:10,838 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:42:10,839 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:42:10,839 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:42:10,839 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:42:10,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:42:10,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:42:10,840 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:42:10,840 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:42:10,840 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:42:10,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:42:10,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:42:10,841 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:42:10,841 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:42:10,841 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:42:10,841 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:42:10,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:42:10,842 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:42:10,842 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:42:10,842 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:42:10,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:42:10,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:42:10,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:42:10,913 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:42:10,913 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:42:10,914 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c [2018-10-24 19:42:10,990 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/187a4240a/35aad403bcb9468c94aaae01e3ee0f8d/FLAG06419f2c7 [2018-10-24 19:42:11,677 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:42:11,679 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c [2018-10-24 19:42:11,704 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/187a4240a/35aad403bcb9468c94aaae01e3ee0f8d/FLAG06419f2c7 [2018-10-24 19:42:11,730 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/187a4240a/35aad403bcb9468c94aaae01e3ee0f8d [2018-10-24 19:42:11,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:42:11,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:42:11,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:42:11,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:42:11,758 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:42:11,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:42:11" (1/1) ... [2018-10-24 19:42:11,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72305746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:11, skipping insertion in model container [2018-10-24 19:42:11,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:42:11" (1/1) ... [2018-10-24 19:42:11,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:42:11,867 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:42:12,762 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:42:12,768 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:42:13,090 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:42:13,125 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:42:13,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13 WrapperNode [2018-10-24 19:42:13,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:42:13,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:42:13,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:42:13,128 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:42:13,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:42:13,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:42:13,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:42:13,525 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:42:13,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (1/1) ... [2018-10-24 19:42:13,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:42:13,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:42:13,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:42:13,701 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:42:13,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (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 19:42:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:42:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:42:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:42:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:42:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:42:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:42:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:42:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:42:19,493 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:42:19,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:42:19 BoogieIcfgContainer [2018-10-24 19:42:19,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:42:19,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:42:19,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:42:19,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:42:19,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:42:11" (1/3) ... [2018-10-24 19:42:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af6b511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:42:19, skipping insertion in model container [2018-10-24 19:42:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:13" (2/3) ... [2018-10-24 19:42:19,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af6b511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:42:19, skipping insertion in model container [2018-10-24 19:42:19,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:42:19" (3/3) ... [2018-10-24 19:42:19,515 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label22_true-unreach-call.c [2018-10-24 19:42:19,528 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:42:19,544 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:42:19,565 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:42:19,624 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:42:19,625 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:42:19,625 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:42:19,625 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:42:19,625 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:42:19,625 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:42:19,626 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:42:19,626 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:42:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:42:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 19:42:19,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:19,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:19,714 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:19,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:19,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1705983263, now seen corresponding path program 1 times [2018-10-24 19:42:19,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:19,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:19,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:19,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:19,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:20,665 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:42:20,892 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 19:42:20,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:20,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:42:20,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:20,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:42:20,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:42:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:20,937 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 19:42:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:23,227 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-24 19:42:23,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:42:23,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-10-24 19:42:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:23,256 INFO L225 Difference]: With dead ends: 838 [2018-10-24 19:42:23,256 INFO L226 Difference]: Without dead ends: 524 [2018-10-24 19:42:23,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-24 19:42:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-24 19:42:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-24 19:42:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-24 19:42:23,382 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 174 [2018-10-24 19:42:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:23,384 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-24 19:42:23,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:42:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-24 19:42:23,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 19:42:23,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:23,394 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:23,394 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:23,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash 458519048, now seen corresponding path program 1 times [2018-10-24 19:42:23,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:23,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:23,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:23,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:23,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:23,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:23,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:42:23,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:23,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:42:23,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:42:23,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:42:23,781 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-24 19:42:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:27,946 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-24 19:42:27,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:42:27,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-10-24 19:42:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:27,970 INFO L225 Difference]: With dead ends: 1581 [2018-10-24 19:42:27,971 INFO L226 Difference]: Without dead ends: 1065 [2018-10-24 19:42:27,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:42:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-24 19:42:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-24 19:42:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-24 19:42:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-24 19:42:28,073 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 184 [2018-10-24 19:42:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:28,074 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-24 19:42:28,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:42:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-24 19:42:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 19:42:28,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:28,087 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:28,087 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:28,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:28,088 INFO L82 PathProgramCache]: Analyzing trace with hash 12780901, now seen corresponding path program 1 times [2018-10-24 19:42:28,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:28,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:28,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:28,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:28,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:28,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:28,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:42:28,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:28,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:42:28,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:42:28,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:28,465 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-24 19:42:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:31,402 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-10-24 19:42:31,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:42:31,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-10-24 19:42:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:31,425 INFO L225 Difference]: With dead ends: 2887 [2018-10-24 19:42:31,426 INFO L226 Difference]: Without dead ends: 1870 [2018-10-24 19:42:31,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-24 19:42:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-10-24 19:42:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-10-24 19:42:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-10-24 19:42:31,496 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 187 [2018-10-24 19:42:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:31,497 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-10-24 19:42:31,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:42:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-10-24 19:42:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 19:42:31,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:31,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:31,506 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:31,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1985831946, now seen corresponding path program 1 times [2018-10-24 19:42:31,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:31,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:31,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:31,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:31,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:31,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:31,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:42:31,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:31,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:42:31,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:42:31,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:31,833 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-10-24 19:42:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:33,423 INFO L93 Difference]: Finished difference Result 5422 states and 9195 transitions. [2018-10-24 19:42:33,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:42:33,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-10-24 19:42:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:33,468 INFO L225 Difference]: With dead ends: 5422 [2018-10-24 19:42:33,469 INFO L226 Difference]: Without dead ends: 3563 [2018-10-24 19:42:33,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:33,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2018-10-24 19:42:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3541. [2018-10-24 19:42:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2018-10-24 19:42:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5808 transitions. [2018-10-24 19:42:33,651 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5808 transitions. Word has length 207 [2018-10-24 19:42:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:33,652 INFO L481 AbstractCegarLoop]: Abstraction has 3541 states and 5808 transitions. [2018-10-24 19:42:33,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:42:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5808 transitions. [2018-10-24 19:42:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-24 19:42:33,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:33,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:33,675 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:33,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1023448885, now seen corresponding path program 1 times [2018-10-24 19:42:33,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:33,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:33,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:33,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:33,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:34,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:34,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 19:42:34,183 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:34,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:42:34,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:42:34,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:42:34,184 INFO L87 Difference]: Start difference. First operand 3541 states and 5808 transitions. Second operand 7 states. [2018-10-24 19:42:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:38,478 INFO L93 Difference]: Finished difference Result 15784 states and 30060 transitions. [2018-10-24 19:42:38,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 19:42:38,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2018-10-24 19:42:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:38,604 INFO L225 Difference]: With dead ends: 15784 [2018-10-24 19:42:38,604 INFO L226 Difference]: Without dead ends: 12249 [2018-10-24 19:42:38,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-24 19:42:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12249 states. [2018-10-24 19:42:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12249 to 11635. [2018-10-24 19:42:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11635 states. [2018-10-24 19:42:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 19720 transitions. [2018-10-24 19:42:39,262 INFO L78 Accepts]: Start accepts. Automaton has 11635 states and 19720 transitions. Word has length 252 [2018-10-24 19:42:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:39,263 INFO L481 AbstractCegarLoop]: Abstraction has 11635 states and 19720 transitions. [2018-10-24 19:42:39,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:42:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11635 states and 19720 transitions. [2018-10-24 19:42:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 19:42:39,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:39,351 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:39,352 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:39,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:39,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1457202219, now seen corresponding path program 1 times [2018-10-24 19:42:39,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:39,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:39,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:39,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:39,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:39,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:42:39,956 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:42:39,957 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-24 19:42:39,960 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [318], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:42:40,059 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:42:40,060 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:46:43,583 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:46:43,584 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:46:43,586 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:46:43,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:46:43,586 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:46:43,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:46:43,600 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:46:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:46:43,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:46:43,945 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:46:44,147 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:46:44,148 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:46:44,154 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:46:44,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:46:44 BoogieIcfgContainer [2018-10-24 19:46:44,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:46:44,156 INFO L168 Benchmark]: Toolchain (without parser) took 272409.82 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 19:46:44,158 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-24 19:46:44,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1376.83 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:46:44,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 396.97 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 704.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -828.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:46:44,161 INFO L168 Benchmark]: Boogie Preprocessor took 174.99 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:46:44,163 INFO L168 Benchmark]: RCFGBuilder took 5794.35 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 254.2 MB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:46:44,164 INFO L168 Benchmark]: TraceAbstraction took 264655.70 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 19:46:44,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1376.83 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 396.97 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 704.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -828.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.99 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5794.35 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 254.2 MB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264655.70 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1536]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1536). Cancelled while BasicCegarLoop was analyzing trace of length 268 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 264.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 15.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1277 SDtfs, 3350 SDslu, 816 SDs, 0 SdLazy, 5868 SolverSat, 1126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11635occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 243.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 685 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1004 NumberOfCodeBlocks, 1004 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 999 ConstructedInterpolants, 0 QuantifiedInterpolants, 632099 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 120/120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown