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/Problem01_label52_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:18:41,746 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:18:41,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:18:41,770 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:18:41,770 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:18:41,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:18:41,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:18:41,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:18:41,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:18:41,777 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:18:41,778 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:18:41,778 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:18:41,779 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:18:41,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:18:41,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:18:41,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:18:41,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:18:41,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:18:41,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:18:41,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:18:41,789 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:18:41,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:18:41,793 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:18:41,806 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 19:18:41,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:18:41,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:18:41,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:18:41,845 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:18:41,845 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:18:41,845 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:18:41,846 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:18:41,846 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:18:41,846 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:18:41,846 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:18:41,846 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:18:41,848 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:18:41,849 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:18:41,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:18:41,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:18:41,850 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:18:41,851 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:18:41,851 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:18:41,851 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:18:41,851 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:18:41,852 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:18:41,852 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:18:41,852 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:18:41,852 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:18:41,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:18:41,853 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:18:41,853 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:18:41,854 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:18:41,854 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:18:41,854 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:18:41,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:18:41,854 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:18:41,854 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:18:41,855 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:18:41,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:18:41,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:18:41,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:18:41,945 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:18:41,946 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:18:41,946 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c [2018-10-24 19:18:42,007 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9a776273/d7bcfa736e0c472db4d5de32e368697b/FLAG6b9cc7ca0 [2018-10-24 19:18:42,652 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:18:42,653 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c [2018-10-24 19:18:42,671 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9a776273/d7bcfa736e0c472db4d5de32e368697b/FLAG6b9cc7ca0 [2018-10-24 19:18:42,691 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9a776273/d7bcfa736e0c472db4d5de32e368697b [2018-10-24 19:18:42,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:18:42,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:18:42,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:18:42,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:18:42,712 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:18:42,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:18:42" (1/1) ... [2018-10-24 19:18:42,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd863c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:42, skipping insertion in model container [2018-10-24 19:18:42,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:18:42" (1/1) ... [2018-10-24 19:18:42,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:18:42,784 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:18:43,238 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:18:43,243 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:18:43,387 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:18:43,405 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:18:43,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43 WrapperNode [2018-10-24 19:18:43,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:18:43,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:18:43,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:18:43,407 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:18:43,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:18:43,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:18:43,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:18:43,608 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:18:43,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (1/1) ... [2018-10-24 19:18:43,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:18:43,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:18:43,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:18:43,671 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:18:43,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (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 19:18:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:18:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:18:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:18:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:18:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:18:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:18:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:18:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:18:47,166 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:18:47,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:18:47 BoogieIcfgContainer [2018-10-24 19:18:47,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:18:47,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:18:47,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:18:47,177 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:18:47,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:18:42" (1/3) ... [2018-10-24 19:18:47,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d40056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:18:47, skipping insertion in model container [2018-10-24 19:18:47,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:43" (2/3) ... [2018-10-24 19:18:47,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d40056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:18:47, skipping insertion in model container [2018-10-24 19:18:47,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:18:47" (3/3) ... [2018-10-24 19:18:47,182 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label52_true-unreach-call_false-termination.c [2018-10-24 19:18:47,193 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:18:47,206 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:18:47,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:18:47,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:18:47,272 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:18:47,273 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:18:47,273 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:18:47,273 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:18:47,273 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:18:47,274 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:18:47,274 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:18:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 19:18:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 19:18:47,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:18:47,317 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] [2018-10-24 19:18:47,320 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:18:47,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:18:47,326 INFO L82 PathProgramCache]: Analyzing trace with hash -197406427, now seen corresponding path program 1 times [2018-10-24 19:18:47,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:18:47,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:47,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:18:47,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:47,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:18:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:18:47,946 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:18:48,108 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 19:18:48,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:18:48,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:18:48,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:18:48,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:18:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:18:48,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:18:48,140 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 19:18:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:18:49,637 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 19:18:49,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:18:49,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-24 19:18:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:18:49,660 INFO L225 Difference]: With dead ends: 550 [2018-10-24 19:18:49,661 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 19:18:49,668 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 19:18:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 19:18:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 19:18:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 19:18:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-10-24 19:18:49,755 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 133 [2018-10-24 19:18:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:18:49,758 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-10-24 19:18:49,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:18:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-10-24 19:18:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 19:18:49,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:18:49,767 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] [2018-10-24 19:18:49,767 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:18:49,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:18:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1386763570, now seen corresponding path program 1 times [2018-10-24 19:18:49,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:18:49,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:49,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:18:49,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:49,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:18:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:18:49,956 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 19:18:49,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:18:49,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:18:49,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:18:49,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:18:49,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:18:49,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:18:49,961 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-10-24 19:18:52,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:18:52,052 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-10-24 19:18:52,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:18:52,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-24 19:18:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:18:52,064 INFO L225 Difference]: With dead ends: 1079 [2018-10-24 19:18:52,065 INFO L226 Difference]: Without dead ends: 745 [2018-10-24 19:18:52,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:18:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-10-24 19:18:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-10-24 19:18:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-10-24 19:18:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-10-24 19:18:52,127 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 143 [2018-10-24 19:18:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:18:52,127 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-10-24 19:18:52,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:18:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-10-24 19:18:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 19:18:52,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:18:52,134 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:18:52,135 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:18:52,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:18:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash 130268386, now seen corresponding path program 1 times [2018-10-24 19:18:52,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:18:52,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:52,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:18:52,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:52,137 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:18:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:18:52,432 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:18:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 19:18:52,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:18:52,642 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:18:52,643 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-10-24 19:18:52,645 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [49], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [701], [703], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:18:52,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:18:52,734 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:19:01,375 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:19:01,377 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 19:19:01,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:19:01,393 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:19:03,928 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.74% of their original sizes. [2018-10-24 19:19:03,929 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:19:05,213 INFO L413 sIntCurrentIteration]: We have 152 unified AI predicates [2018-10-24 19:19:05,214 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:19:05,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:19:05,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-10-24 19:19:05,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:19:05,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 19:19:05,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 19:19:05,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:19:05,217 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 12 states. [2018-10-24 19:19:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:19:16,329 INFO L93 Difference]: Finished difference Result 1521 states and 2423 transitions. [2018-10-24 19:19:16,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:19:16,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2018-10-24 19:19:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:19:16,339 INFO L225 Difference]: With dead ends: 1521 [2018-10-24 19:19:16,339 INFO L226 Difference]: Without dead ends: 794 [2018-10-24 19:19:16,343 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:19:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2018-10-24 19:19:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2018-10-24 19:19:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2018-10-24 19:19:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1232 transitions. [2018-10-24 19:19:16,403 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1232 transitions. Word has length 153 [2018-10-24 19:19:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:19:16,404 INFO L481 AbstractCegarLoop]: Abstraction has 794 states and 1232 transitions. [2018-10-24 19:19:16,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 19:19:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1232 transitions. [2018-10-24 19:19:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 19:19:16,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:19:16,412 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-10-24 19:19:16,415 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:19:16,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:19:16,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2100798917, now seen corresponding path program 1 times [2018-10-24 19:19:16,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:19:16,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:19:16,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:19:16,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:19:16,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:19:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:19:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:19:16,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:19:16,913 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:19:16,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-10-24 19:19:16,914 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [701], [703], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:19:16,929 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:19:16,930 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:19:54,009 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:19:54,010 INFO L272 AbstractInterpreter]: Visited 137 different actions 202 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:19:54,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:19:54,016 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:19:59,457 INFO L232 lantSequenceWeakener]: Weakened 55 states. On average, predicates are now at 81.07% of their original sizes. [2018-10-24 19:19:59,458 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:21:39,058 INFO L413 sIntCurrentIteration]: We have 154 unified AI predicates [2018-10-24 19:21:39,059 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:21:39,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:21:39,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 19:21:39,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:39,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 19:21:39,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 19:21:39,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2018-10-24 19:21:39,062 INFO L87 Difference]: Start difference. First operand 794 states and 1232 transitions. Second operand 23 states. Received shutdown request... [2018-10-24 19:23:02,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 19:23:02,657 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:23:02,664 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:23:02,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:23:02 BoogieIcfgContainer [2018-10-24 19:23:02,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:23:02,665 INFO L168 Benchmark]: Toolchain (without parser) took 259959.40 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -178.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 19:23:02,666 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:23:02,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:23:02,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 200.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:23:02,668 INFO L168 Benchmark]: Boogie Preprocessor took 62.70 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. [2018-10-24 19:23:02,668 INFO L168 Benchmark]: RCFGBuilder took 3501.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:23:02,669 INFO L168 Benchmark]: TraceAbstraction took 255491.27 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 481.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 19:23:02,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 200.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.70 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 3501.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255491.27 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 481.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 554]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 554). Cancelled while BasicCegarLoop was constructing difference of abstraction (794states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1044 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 255.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 98.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 625 SDtfs, 1816 SDslu, 454 SDs, 0 SdLazy, 3045 SolverSat, 575 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 338 GetRequests, 252 SyntacticMatches, 30 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 106.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 45.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9948456347308577 AbsIntWeakeningRatio, 0.20915032679738563 AbsIntAvgWeakeningVarsNumRemoved, 1119.2614379084966 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 211456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 35/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown