java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:46:30,773 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:46:30,775 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:46:30,788 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:46:30,788 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:46:30,789 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:46:30,790 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:46:30,792 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:46:30,794 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:46:30,795 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:46:30,796 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:46:30,796 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:46:30,797 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:46:30,798 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:46:30,799 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:46:30,800 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:46:30,801 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:46:30,803 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:46:30,805 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:46:30,807 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:46:30,808 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:46:30,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:46:30,812 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:46:30,821 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:46:30,854 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:46:30,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:46:30,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:46:30,856 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:46:30,856 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:46:30,856 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:46:30,857 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:46:30,857 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:46:30,857 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:46:30,857 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:46:30,857 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:46:30,857 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:46:30,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:46:30,861 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:46:30,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:46:30,862 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:46:30,862 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:46:30,862 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:46:30,862 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:46:30,863 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:46:30,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:46:30,863 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:46:30,863 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:46:30,863 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:46:30,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:46:30,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:46:30,865 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:46:30,865 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:46:30,866 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:46:30,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:46:30,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:46:30,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:46:30,866 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:46:30,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:46:30,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:46:30,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:46:30,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:46:30,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:46:30,937 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:46:30,937 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27_false-unreach-call.c [2018-11-07 00:46:31,004 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9144759/190f1b79263841a6a552b87557515322/FLAG5e372b0d9 [2018-11-07 00:46:31,737 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:46:31,738 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label27_false-unreach-call.c [2018-11-07 00:46:31,764 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9144759/190f1b79263841a6a552b87557515322/FLAG5e372b0d9 [2018-11-07 00:46:31,781 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9144759/190f1b79263841a6a552b87557515322 [2018-11-07 00:46:31,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:46:31,796 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:46:31,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:46:31,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:46:31,802 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:46:31,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:31" (1/1) ... [2018-11-07 00:46:31,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31, skipping insertion in model container [2018-11-07 00:46:31,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:31" (1/1) ... [2018-11-07 00:46:31,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:46:31,961 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:46:33,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:46:33,143 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:46:33,603 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:46:33,634 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:46:33,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33 WrapperNode [2018-11-07 00:46:33,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:46:33,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:46:33,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:46:33,636 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:46:33,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:33,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:33,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:46:33,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:46:33,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:46:33,953 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:46:33,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:33,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:33,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:33,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:34,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:34,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:34,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... [2018-11-07 00:46:34,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:46:34,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:46:34,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:46:34,145 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:46:34,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:46:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:46:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:46:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:46:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:46:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:46:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:46:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:46:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:46:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:46:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:46:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:46:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:46:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:46:42,428 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:46:42,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:46:42 BoogieIcfgContainer [2018-11-07 00:46:42,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:46:42,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:46:42,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:46:42,433 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:46:42,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:46:31" (1/3) ... [2018-11-07 00:46:42,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:46:42, skipping insertion in model container [2018-11-07 00:46:42,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:33" (2/3) ... [2018-11-07 00:46:42,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:46:42, skipping insertion in model container [2018-11-07 00:46:42,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:46:42" (3/3) ... [2018-11-07 00:46:42,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label27_false-unreach-call.c [2018-11-07 00:46:42,448 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:46:42,459 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:46:42,477 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:46:42,527 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:46:42,528 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:46:42,528 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:46:42,528 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:46:42,528 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:46:42,528 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:46:42,529 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:46:42,529 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:46:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 00:46:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 00:46:42,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:46:42,582 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] [2018-11-07 00:46:42,584 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:46:42,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:46:42,591 INFO L82 PathProgramCache]: Analyzing trace with hash -917613089, now seen corresponding path program 1 times [2018-11-07 00:46:42,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:46:42,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:46:42,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:46:42,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:46:42,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:46:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:46:43,050 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:46:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:46:43,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:46:43,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:46:43,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:46:43,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:46:43,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:46:43,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:46:43,227 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 00:46:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:46:50,198 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 00:46:50,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:46:50,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-07 00:46:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:46:50,230 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 00:46:50,230 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 00:46:50,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:46:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 00:46:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 00:46:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 00:46:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 00:46:50,400 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 37 [2018-11-07 00:46:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:46:50,401 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 00:46:50,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:46:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 00:46:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 00:46:50,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:46:50,414 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] [2018-11-07 00:46:50,415 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:46:50,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:46:50,415 INFO L82 PathProgramCache]: Analyzing trace with hash -42137923, now seen corresponding path program 1 times [2018-11-07 00:46:50,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:46:50,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:46:50,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:46:50,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:46:50,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:46:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:46:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:46:50,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:46:50,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:46:50,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:46:50,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:46:50,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:46:50,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:46:50,740 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 00:46:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:46:59,513 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 00:46:59,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:46:59,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 00:46:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:46:59,536 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 00:46:59,536 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 00:46:59,542 INFO L604 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 [2018-11-07 00:46:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 00:46:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 00:46:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 00:46:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-11-07 00:46:59,645 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 112 [2018-11-07 00:46:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:46:59,645 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-11-07 00:46:59,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:46:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-11-07 00:46:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 00:46:59,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:46:59,652 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] [2018-11-07 00:46:59,653 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:46:59,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:46:59,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1260169237, now seen corresponding path program 1 times [2018-11-07 00:46:59,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:46:59,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:46:59,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:46:59,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:46:59,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:46:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:46:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:46:59,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:46:59,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:46:59,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:46:59,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:46:59,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:46:59,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:46:59,904 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-11-07 00:47:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:47:05,727 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-11-07 00:47:05,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:47:05,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 00:47:05,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:47:05,754 INFO L225 Difference]: With dead ends: 7337 [2018-11-07 00:47:05,754 INFO L226 Difference]: Without dead ends: 4415 [2018-11-07 00:47:05,763 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:47:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-11-07 00:47:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-11-07 00:47:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-11-07 00:47:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-11-07 00:47:05,888 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 124 [2018-11-07 00:47:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:47:05,888 INFO L480 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-11-07 00:47:05,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:47:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-11-07 00:47:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 00:47:05,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:47:05,892 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] [2018-11-07 00:47:05,892 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:47:05,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:47:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1828599108, now seen corresponding path program 1 times [2018-11-07 00:47:05,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:47:05,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:47:05,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:47:05,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:47:05,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:47:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:47:06,246 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:47:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:47:06,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:47:06,783 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:47:06,784 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-11-07 00:47:06,794 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1819], [1821], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:47:06,894 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:47:06,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:47:09,397 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:47:09,487 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:47:09,488 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:47:09,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:47:09,512 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:47:11,038 INFO L227 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 77.97% of their original sizes. [2018-11-07 00:47:11,039 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:47:11,430 INFO L415 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2018-11-07 00:47:11,431 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:47:11,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:47:11,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 00:47:11,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:47:11,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:47:11,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:47:11,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:47:11,434 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 7 states. [2018-11-07 00:48:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:48:20,838 INFO L93 Difference]: Finished difference Result 9493 states and 13867 transitions. [2018-11-07 00:48:20,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:48:20,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2018-11-07 00:48:20,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:48:20,859 INFO L225 Difference]: With dead ends: 9493 [2018-11-07 00:48:20,860 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 00:48:20,872 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:48:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 00:48:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2018-11-07 00:48:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2018-11-07 00:48:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7209 transitions. [2018-11-07 00:48:21,003 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7209 transitions. Word has length 149 [2018-11-07 00:48:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:48:21,003 INFO L480 AbstractCegarLoop]: Abstraction has 5100 states and 7209 transitions. [2018-11-07 00:48:21,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:48:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7209 transitions. [2018-11-07 00:48:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-07 00:48:21,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:48:21,009 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:48:21,009 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:48:21,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2121622530, now seen corresponding path program 1 times [2018-11-07 00:48:21,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:48:21,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:21,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:48:21,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:21,011 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:48:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:48:21,551 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:48:21,732 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:48:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 114 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:48:22,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:48:22,059 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:48:22,059 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-07 00:48:22,060 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1819], [1821], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:48:22,077 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:48:22,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:48:23,910 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:48:33,236 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:48:33,236 INFO L272 AbstractInterpreter]: Visited 195 different actions 383 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:48:33,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:33,257 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:48:38,053 INFO L227 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 77.99% of their original sizes. [2018-11-07 00:48:38,054 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:49:02,750 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-07 00:49:02,751 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:49:02,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:49:02,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-11-07 00:49:02,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:49:02,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 00:49:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 00:49:02,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-07 00:49:02,753 INFO L87 Difference]: Start difference. First operand 5100 states and 7209 transitions. Second operand 15 states. Received shutdown request... [2018-11-07 00:50:15,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 00:50:15,614 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:50:15,620 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:50:15,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:50:15 BoogieIcfgContainer [2018-11-07 00:50:15,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:50:15,621 INFO L168 Benchmark]: Toolchain (without parser) took 223825.84 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -128.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:50:15,622 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:50:15,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1837.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:50:15,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:50:15,625 INFO L168 Benchmark]: Boogie Preprocessor took 191.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:50:15,625 INFO L168 Benchmark]: RCFGBuilder took 8284.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.5 MB). Peak memory consumption was 511.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:50:15,626 INFO L168 Benchmark]: TraceAbstraction took 213190.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 147.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 00:50:15,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1837.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 317.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8284.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.5 MB). Peak memory consumption was 511.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213190.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 147.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (5100states) and FLOYD_HOARE automaton (currently 15 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (287 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 213.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 163.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1128 SDtfs, 8247 SDslu, 497 SDs, 0 SdLazy, 11725 SolverSat, 3702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 513 GetRequests, 437 SyntacticMatches, 38 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 25.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5100occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958217061241635 AbsIntWeakeningRatio, 0.09523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 287.3706004140787 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 758 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 753 ConstructedInterpolants, 0 QuantifiedInterpolants, 1406033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 174/262 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown