java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:25:20,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:25:20,775 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:25:20,790 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:25:20,791 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:25:20,794 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:25:20,796 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:25:20,799 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:25:20,800 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:25:20,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:25:20,803 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:25:20,805 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:25:20,807 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:25:20,807 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:25:20,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:25:20,812 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:25:20,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:25:20,823 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:25:20,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:25:20,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:25:20,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:25:20,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:25:20,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:25:20,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:25:20,852 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:25:20,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:25:20,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:25:20,855 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:25:20,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:25:20,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:25:20,884 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:25:20,884 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:25:20,884 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:25:20,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:25:20,885 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:25:20,885 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:25:20,885 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:25:20,885 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:25:20,886 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:25:20,886 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:25:20,887 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:25:20,887 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:25:20,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:25:20,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:25:20,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:25:20,888 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:25:20,888 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:25:20,888 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:25:20,888 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:25:20,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:25:20,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:25:20,891 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:25:20,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:20,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:25:20,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:25:20,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:25:20,892 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:25:20,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:25:20,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:25:20,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:25:20,892 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:25:20,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:25:20,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:25:20,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:25:20,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:25:20,975 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:25:20,975 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:25:20,976 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-24 18:25:21,038 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bf7572760/0f33ac817f5842e7bd5fd1398899803f/FLAGc93e394e5 [2018-10-24 18:25:21,834 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:25:21,835 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-24 18:25:21,878 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bf7572760/0f33ac817f5842e7bd5fd1398899803f/FLAGc93e394e5 [2018-10-24 18:25:21,898 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bf7572760/0f33ac817f5842e7bd5fd1398899803f [2018-10-24 18:25:21,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:25:21,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:25:21,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:21,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:25:21,924 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:25:21,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:21" (1/1) ... [2018-10-24 18:25:21,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1986afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:21, skipping insertion in model container [2018-10-24 18:25:21,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:21" (1/1) ... [2018-10-24 18:25:21,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:25:22,125 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:25:23,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:23,545 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:25:24,304 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:24,346 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:25:24,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24 WrapperNode [2018-10-24 18:25:24,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:24,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:24,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:25:24,349 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:25:24,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:24,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:24,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:24,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:25:24,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:25:24,946 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:25:24,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:24,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:24,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:24,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:25,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:25,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:25,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... [2018-10-24 18:25:25,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:25:25,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:25:25,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:25:25,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:25:25,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:25:25,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:25:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:25:25,382 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:25:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:25:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:25:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:25:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:25:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:25:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:25:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:25:25,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:25:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:25:25,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:25:36,720 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:25:36,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:36 BoogieIcfgContainer [2018-10-24 18:25:36,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:25:36,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:25:36,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:25:36,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:25:36,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:25:21" (1/3) ... [2018-10-24 18:25:36,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d244b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:36, skipping insertion in model container [2018-10-24 18:25:36,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:24" (2/3) ... [2018-10-24 18:25:36,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d244b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:36, skipping insertion in model container [2018-10-24 18:25:36,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:36" (3/3) ... [2018-10-24 18:25:36,729 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label43_false-unreach-call.c [2018-10-24 18:25:36,739 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:25:36,749 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:25:36,767 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:25:36,813 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:25:36,813 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:25:36,814 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:25:36,814 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:25:36,814 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:25:36,814 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:25:36,814 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:25:36,814 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:25:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:25:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-24 18:25:36,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:36,882 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] [2018-10-24 18:25:36,885 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:36,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:36,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2074424869, now seen corresponding path program 1 times [2018-10-24 18:25:36,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:36,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:36,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:36,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:36,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:37,314 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:25:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:37,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:37,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:25:37,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:37,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:25:37,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:25:37,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:25:37,425 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 18:25:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:50,037 INFO L93 Difference]: Finished difference Result 3101 states and 5730 transitions. [2018-10-24 18:25:50,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:25:50,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-10-24 18:25:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:50,077 INFO L225 Difference]: With dead ends: 3101 [2018-10-24 18:25:50,077 INFO L226 Difference]: Without dead ends: 1979 [2018-10-24 18:25:50,089 INFO L605 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 [2018-10-24 18:25:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2018-10-24 18:25:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1959. [2018-10-24 18:25:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 18:25:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3535 transitions. [2018-10-24 18:25:50,257 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3535 transitions. Word has length 25 [2018-10-24 18:25:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:50,258 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3535 transitions. [2018-10-24 18:25:50,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:25:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3535 transitions. [2018-10-24 18:25:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 18:25:50,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:50,264 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:50,265 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:50,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1247410474, now seen corresponding path program 1 times [2018-10-24 18:25:50,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:50,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:50,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:50,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:50,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:50,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:50,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:25:50,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:50,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:25:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:25:50,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:25:50,694 INFO L87 Difference]: Start difference. First operand 1959 states and 3535 transitions. Second operand 5 states. [2018-10-24 18:26:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:07,086 INFO L93 Difference]: Finished difference Result 5717 states and 10466 transitions. [2018-10-24 18:26:07,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:26:07,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-10-24 18:26:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:07,119 INFO L225 Difference]: With dead ends: 5717 [2018-10-24 18:26:07,119 INFO L226 Difference]: Without dead ends: 3764 [2018-10-24 18:26:07,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:26:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2018-10-24 18:26:07,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3679. [2018-10-24 18:26:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3679 states. [2018-10-24 18:26:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 6042 transitions. [2018-10-24 18:26:07,255 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 6042 transitions. Word has length 101 [2018-10-24 18:26:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:07,256 INFO L481 AbstractCegarLoop]: Abstraction has 3679 states and 6042 transitions. [2018-10-24 18:26:07,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:26:07,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 6042 transitions. [2018-10-24 18:26:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 18:26:07,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:07,264 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:26:07,264 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:07,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:07,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1584202367, now seen corresponding path program 1 times [2018-10-24 18:26:07,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:07,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:07,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:07,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:07,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:07,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:07,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:26:07,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:07,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:26:07,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:26:07,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:26:07,469 INFO L87 Difference]: Start difference. First operand 3679 states and 6042 transitions. Second operand 6 states. [2018-10-24 18:26:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:16,270 INFO L93 Difference]: Finished difference Result 10857 states and 18392 transitions. [2018-10-24 18:26:16,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:26:16,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 18:26:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:16,318 INFO L225 Difference]: With dead ends: 10857 [2018-10-24 18:26:16,319 INFO L226 Difference]: Without dead ends: 7184 [2018-10-24 18:26:16,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:26:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2018-10-24 18:26:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7133. [2018-10-24 18:26:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2018-10-24 18:26:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 10914 transitions. [2018-10-24 18:26:16,539 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 10914 transitions. Word has length 102 [2018-10-24 18:26:16,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:16,540 INFO L481 AbstractCegarLoop]: Abstraction has 7133 states and 10914 transitions. [2018-10-24 18:26:16,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:26:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 10914 transitions. [2018-10-24 18:26:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 18:26:16,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:16,547 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:16,547 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:16,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:16,550 INFO L82 PathProgramCache]: Analyzing trace with hash -51827352, now seen corresponding path program 1 times [2018-10-24 18:26:16,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:16,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:16,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:16,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:16,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:16,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:16,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:26:16,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:16,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:26:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:26:16,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:16,762 INFO L87 Difference]: Start difference. First operand 7133 states and 10914 transitions. Second operand 3 states. [2018-10-24 18:26:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:25,984 INFO L93 Difference]: Finished difference Result 20919 states and 33369 transitions. [2018-10-24 18:26:25,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:26:25,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2018-10-24 18:26:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:26,066 INFO L225 Difference]: With dead ends: 20919 [2018-10-24 18:26:26,067 INFO L226 Difference]: Without dead ends: 13792 [2018-10-24 18:26:26,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13792 states. [2018-10-24 18:26:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13792 to 13791. [2018-10-24 18:26:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13791 states. [2018-10-24 18:26:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13791 states to 13791 states and 20341 transitions. [2018-10-24 18:26:26,879 INFO L78 Accepts]: Start accepts. Automaton has 13791 states and 20341 transitions. Word has length 126 [2018-10-24 18:26:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:26,880 INFO L481 AbstractCegarLoop]: Abstraction has 13791 states and 20341 transitions. [2018-10-24 18:26:26,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:26:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 13791 states and 20341 transitions. [2018-10-24 18:26:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 18:26:26,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:26,885 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:26,885 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:26,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1302306563, now seen corresponding path program 1 times [2018-10-24 18:26:26,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:26,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:26,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:26,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:26,888 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:27,198 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:26:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 36 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:26:27,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:26:27,428 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:26:27,429 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-24 18:26:27,432 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2727], [2729], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:26:27,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:26:27,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:26:31,189 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:26:36,028 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:26:36,030 INFO L272 AbstractInterpreter]: Visited 83 different actions 83 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:26:36,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:36,063 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:26:41,822 INFO L232 lantSequenceWeakener]: Weakened 158 states. On average, predicates are now at 71.34% of their original sizes. [2018-10-24 18:26:41,823 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:26:43,555 INFO L413 sIntCurrentIteration]: We have 178 unified AI predicates [2018-10-24 18:26:43,556 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:26:43,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:26:43,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-24 18:26:43,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:43,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:26:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:26:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:26:43,559 INFO L87 Difference]: Start difference. First operand 13791 states and 20341 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown