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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:53:27,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:53:27,549 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:53:27,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:53:27,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:53:27,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:53:27,569 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:53:27,571 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:53:27,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:53:27,574 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:53:27,575 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:53:27,575 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:53:27,576 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:53:27,577 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:53:27,578 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:53:27,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:53:27,580 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:53:27,582 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:53:27,584 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:53:27,586 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:53:27,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:53:27,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:53:27,590 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 14:53:27,596 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:53:27,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:53:27,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:53:27,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:53:27,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:53:27,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:53:27,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:53:27,623 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:53:27,623 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:53:27,623 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:53:27,623 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:53:27,624 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:53:27,624 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:53:27,624 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:53:27,624 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:53:27,624 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:53:27,625 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:53:27,625 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:53:27,625 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:53:27,626 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:53:27,626 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:53:27,626 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:53:27,626 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:53:27,626 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:53:27,627 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:53:27,627 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:53:27,627 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:53:27,627 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:53:27,627 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:53:27,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:53:27,628 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:53:27,628 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:53:27,628 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:53:27,628 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:53:27,629 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:53:27,629 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:53:27,629 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:53:27,629 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:53:27,629 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:53:27,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:53:27,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:53:27,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:53:27,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:53:27,707 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:53:27,707 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-11-07 14:53:27,769 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a047c2ecf/26e39262e0ed46e1a03908f7830912c7/FLAGa57dd30dd [2018-11-07 14:53:28,724 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:53:28,725 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-11-07 14:53:28,757 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a047c2ecf/26e39262e0ed46e1a03908f7830912c7/FLAGa57dd30dd [2018-11-07 14:53:28,772 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a047c2ecf/26e39262e0ed46e1a03908f7830912c7 [2018-11-07 14:53:28,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:53:28,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:53:28,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:28,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:53:28,791 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:53:28,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:28" (1/1) ... [2018-11-07 14:53:28,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c60cb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:28, skipping insertion in model container [2018-11-07 14:53:28,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:28" (1/1) ... [2018-11-07 14:53:28,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:53:29,014 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:53:30,605 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:30,611 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:53:31,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:31,379 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:53:31,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31 WrapperNode [2018-11-07 14:53:31,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:31,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:31,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:53:31,382 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:53:31,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:31,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:53:31,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:53:31,775 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:53:31,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:32,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:32,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:32,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:53:32,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:53:32,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:53:32,080 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:53:32,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (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 14:53:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:53:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:53:32,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:53:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:53:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:53:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:53:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:53:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:53:32,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:53:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:53:32,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:53:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:53:32,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:53:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:53:32,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:53:42,736 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:53:42,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:42 BoogieIcfgContainer [2018-11-07 14:53:42,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:53:42,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:53:42,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:53:42,741 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:53:42,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:53:28" (1/3) ... [2018-11-07 14:53:42,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0a7436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:42, skipping insertion in model container [2018-11-07 14:53:42,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31" (2/3) ... [2018-11-07 14:53:42,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0a7436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:42, skipping insertion in model container [2018-11-07 14:53:42,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:42" (3/3) ... [2018-11-07 14:53:42,745 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label37_true-unreach-call.c [2018-11-07 14:53:42,755 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:53:42,765 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:53:42,782 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:53:42,835 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:53:42,835 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:53:42,835 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:53:42,836 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:53:42,836 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:53:42,836 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:53:42,836 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:53:42,836 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:53:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:53:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 14:53:42,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:42,900 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:53:42,903 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:42,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:42,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1389126997, now seen corresponding path program 1 times [2018-11-07 14:53:42,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:42,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:42,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:42,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:42,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:43,435 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:53:43,604 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 14:53:43,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:43,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:53:43,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:43,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:53:43,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:53:43,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:53:43,634 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 14:53:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:53:52,817 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-07 14:53:52,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:53:52,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 14:53:52,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:53:52,859 INFO L225 Difference]: With dead ends: 3087 [2018-11-07 14:53:52,859 INFO L226 Difference]: Without dead ends: 1965 [2018-11-07 14:53:52,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:53:52,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-07 14:53:53,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-07 14:53:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 14:53:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-07 14:53:53,094 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 61 [2018-11-07 14:53:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:53:53,095 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-07 14:53:53,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:53:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-07 14:53:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 14:53:53,110 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:53,110 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:53:53,110 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:53,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash -159322310, now seen corresponding path program 1 times [2018-11-07 14:53:53,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:53,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:53,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:53,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:53,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:53,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:53,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:53:53,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:53,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:53:53,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:53:53,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:53:53,482 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-07 14:54:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:06,072 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-11-07 14:54:06,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:06,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-07 14:54:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:06,103 INFO L225 Difference]: With dead ends: 5634 [2018-11-07 14:54:06,103 INFO L226 Difference]: Without dead ends: 3681 [2018-11-07 14:54:06,111 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 14:54:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-11-07 14:54:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-11-07 14:54:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-11-07 14:54:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-11-07 14:54:06,261 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 138 [2018-11-07 14:54:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:06,262 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-11-07 14:54:06,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-11-07 14:54:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 14:54:06,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:06,277 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:06,281 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:06,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:06,281 INFO L82 PathProgramCache]: Analyzing trace with hash -587412254, now seen corresponding path program 1 times [2018-11-07 14:54:06,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:06,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:06,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:06,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:06,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:06,540 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:06,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:06,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:06,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:06,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:06,614 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-11-07 14:54:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:18,807 INFO L93 Difference]: Finished difference Result 12391 states and 20613 transitions. [2018-11-07 14:54:18,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:54:18,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-11-07 14:54:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:18,859 INFO L225 Difference]: With dead ends: 12391 [2018-11-07 14:54:18,861 INFO L226 Difference]: Without dead ends: 8747 [2018-11-07 14:54:18,882 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 14:54:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2018-11-07 14:54:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 8687. [2018-11-07 14:54:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2018-11-07 14:54:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 12870 transitions. [2018-11-07 14:54:19,133 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 12870 transitions. Word has length 157 [2018-11-07 14:54:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:19,133 INFO L480 AbstractCegarLoop]: Abstraction has 8687 states and 12870 transitions. [2018-11-07 14:54:19,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 12870 transitions. [2018-11-07 14:54:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 14:54:19,141 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:19,141 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:19,145 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:19,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash 955353466, now seen corresponding path program 1 times [2018-11-07 14:54:19,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:19,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:19,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:19,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:19,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:19,470 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:19,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:19,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:19,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:19,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:19,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:19,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:19,547 INFO L87 Difference]: Start difference. First operand 8687 states and 12870 transitions. Second operand 6 states. [2018-11-07 14:54:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:29,957 INFO L93 Difference]: Finished difference Result 22915 states and 34933 transitions. [2018-11-07 14:54:29,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:29,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-11-07 14:54:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:30,042 INFO L225 Difference]: With dead ends: 22915 [2018-11-07 14:54:30,042 INFO L226 Difference]: Without dead ends: 14234 [2018-11-07 14:54:30,079 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 14:54:30,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14234 states. [2018-11-07 14:54:30,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14234 to 14063. [2018-11-07 14:54:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14063 states. [2018-11-07 14:54:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14063 states to 14063 states and 19980 transitions. [2018-11-07 14:54:30,458 INFO L78 Accepts]: Start accepts. Automaton has 14063 states and 19980 transitions. Word has length 169 [2018-11-07 14:54:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:30,459 INFO L480 AbstractCegarLoop]: Abstraction has 14063 states and 19980 transitions. [2018-11-07 14:54:30,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 14063 states and 19980 transitions. [2018-11-07 14:54:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 14:54:30,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:30,468 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 14:54:30,469 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:30,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:30,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1006516317, now seen corresponding path program 1 times [2018-11-07 14:54:30,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:30,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:30,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:30,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:30,471 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:54:30,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:54:30,790 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:54:30,792 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-07 14:54:30,797 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3015], [3017], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:54:30,872 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:54:30,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:54:31,591 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:54:31,593 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:54:31,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:31,641 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:54:32,634 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 71.83% of their original sizes. [2018-11-07 14:54:32,635 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:54:33,139 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-07 14:54:33,139 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:54:33,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:54:33,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 14:54:33,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:33,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 14:54:33,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 14:54:33,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:54:33,143 INFO L87 Difference]: Start difference. First operand 14063 states and 19980 transitions. Second operand 10 states. [2018-11-07 14:54:40,406 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown