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/Problem18_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:46:09,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:46:09,831 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:46:09,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:46:09,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:46:09,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:46:09,846 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:46:09,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:46:09,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:46:09,851 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:46:09,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:46:09,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:46:09,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:46:09,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:46:09,855 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:46:09,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:46:09,857 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:46:09,859 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:46:09,863 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:46:09,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:46:09,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:46:09,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:46:09,876 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:46:09,882 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:46:09,882 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:46:09,883 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:46:09,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:46:09,884 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 [2018-10-27 03:46:09,911 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:46:09,911 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:46:09,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:46:09,912 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:46:09,912 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:46:09,913 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:46:09,913 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:46:09,913 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:46:09,913 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:46:09,913 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:46:09,914 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:46:09,914 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:46:09,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:46:09,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:46:09,915 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:46:09,915 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:46:09,915 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:46:09,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:46:09,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:46:09,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:46:09,916 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:46:09,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:46:09,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:46:09,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:46:09,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:46:09,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:46:09,919 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:46:09,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:46:09,919 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:46:09,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:46:09,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:46:09,920 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:46:09,920 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:46:09,920 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:46:09,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:46:09,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:46:09,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:46:09,990 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:46:09,991 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:46:09,992 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c [2018-10-27 03:46:10,055 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/daa606cdf/e4235504ab5e4c4aa766910331d7f216/FLAGb9a6ba6fa [2018-10-27 03:46:10,771 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:46:10,772 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c [2018-10-27 03:46:10,797 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/daa606cdf/e4235504ab5e4c4aa766910331d7f216/FLAGb9a6ba6fa [2018-10-27 03:46:10,814 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/daa606cdf/e4235504ab5e4c4aa766910331d7f216 [2018-10-27 03:46:10,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:46:10,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:46:10,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:46:10,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:46:10,839 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:46:10,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:46:10" (1/1) ... [2018-10-27 03:46:10,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:10, skipping insertion in model container [2018-10-27 03:46:10,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:46:10" (1/1) ... [2018-10-27 03:46:10,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:46:10,996 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:46:12,083 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:46:12,089 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:46:12,528 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:46:12,561 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:46:12,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12 WrapperNode [2018-10-27 03:46:12,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:46:12,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:46:12,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:46:12,563 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:46:12,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:12,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:12,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:46:12,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:46:12,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:46:12,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:46:12,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (1/1) ... [2018-10-27 03:46:13,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:46:13,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:46:13,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:46:13,274 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:46:13,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (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 [2018-10-27 03:46:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:46:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:46:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:46:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:46:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:46:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:46:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:46:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:46:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:46:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:46:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:46:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:46:21,989 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:46:21,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:46:21 BoogieIcfgContainer [2018-10-27 03:46:21,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:46:21,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:46:21,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:46:21,995 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:46:21,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:46:10" (1/3) ... [2018-10-27 03:46:21,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f5675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:46:21, skipping insertion in model container [2018-10-27 03:46:21,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:12" (2/3) ... [2018-10-27 03:46:21,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f5675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:46:21, skipping insertion in model container [2018-10-27 03:46:21,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:46:21" (3/3) ... [2018-10-27 03:46:21,999 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label48_true-unreach-call.c [2018-10-27 03:46:22,010 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:46:22,021 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:46:22,040 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:46:22,087 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:46:22,088 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:46:22,088 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:46:22,088 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:46:22,088 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:46:22,088 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:46:22,088 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:46:22,089 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:46:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:46:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-27 03:46:22,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:46:22,156 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] [2018-10-27 03:46:22,159 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:46:22,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:46:22,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1292644929, now seen corresponding path program 1 times [2018-10-27 03:46:22,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:46:22,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:22,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:46:22,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:22,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:46:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:46:22,740 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:46:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:46:22,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:46:22,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:46:22,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:46:22,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:46:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:46:22,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:46:22,901 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:46:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:46:29,766 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:46:29,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:46:29,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-10-27 03:46:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:46:29,801 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:46:29,801 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:46:29,813 INFO L605 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 [2018-10-27 03:46:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:46:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:46:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:46:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 03:46:29,971 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 61 [2018-10-27 03:46:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:46:29,972 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 03:46:29,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:46:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 03:46:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-27 03:46:29,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:46:29,984 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] [2018-10-27 03:46:29,984 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:46:29,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:46:29,985 INFO L82 PathProgramCache]: Analyzing trace with hash -285110120, now seen corresponding path program 1 times [2018-10-27 03:46:29,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:46:29,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:29,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:46:29,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:29,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:46:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:46:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:46:30,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:46:30,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:46:30,318 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:46:30,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:46:30,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:46:30,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:46:30,321 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 03:46:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:46:40,324 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-10-27 03:46:40,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:46:40,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-27 03:46:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:46:40,350 INFO L225 Difference]: With dead ends: 4416 [2018-10-27 03:46:40,350 INFO L226 Difference]: Without dead ends: 2948 [2018-10-27 03:46:40,356 INFO L605 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 [2018-10-27 03:46:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-10-27 03:46:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-10-27 03:46:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-10-27 03:46:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-10-27 03:46:40,455 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 151 [2018-10-27 03:46:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:46:40,456 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-10-27 03:46:40,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:46:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-10-27 03:46:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-27 03:46:40,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:46:40,463 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] [2018-10-27 03:46:40,463 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:46:40,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:46:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1359936829, now seen corresponding path program 1 times [2018-10-27 03:46:40,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:46:40,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:40,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:46:40,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:40,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:46:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:46:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:46:40,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:46:40,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:46:40,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:46:40,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:46:40,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:46:40,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:46:40,697 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-10-27 03:46:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:46:53,939 INFO L93 Difference]: Finished difference Result 11796 states and 22934 transitions. [2018-10-27 03:46:53,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:46:53,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-27 03:46:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:46:54,020 INFO L225 Difference]: With dead ends: 11796 [2018-10-27 03:46:54,020 INFO L226 Difference]: Without dead ends: 8880 [2018-10-27 03:46:54,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:46:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2018-10-27 03:46:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8810. [2018-10-27 03:46:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8810 states. [2018-10-27 03:46:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 14107 transitions. [2018-10-27 03:46:54,357 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 14107 transitions. Word has length 152 [2018-10-27 03:46:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:46:54,357 INFO L481 AbstractCegarLoop]: Abstraction has 8810 states and 14107 transitions. [2018-10-27 03:46:54,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:46:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 14107 transitions. [2018-10-27 03:46:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-27 03:46:54,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:46:54,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:46:54,368 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:46:54,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:46:54,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1160234964, now seen corresponding path program 1 times [2018-10-27 03:46:54,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:46:54,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:54,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:46:54,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:54,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:46:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:46:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 108 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:46:54,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:46:54,718 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:46:54,719 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-27 03:46:54,721 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], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2011], [2013], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:46:54,785 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:46:54,785 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:46:56,976 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:46:56,978 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:46:57,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:46:57,018 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:46:58,919 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78.28% of their original sizes. [2018-10-27 03:46:58,919 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:46:59,393 INFO L415 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2018-10-27 03:46:59,393 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:46:59,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:46:59,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-27 03:46:59,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:46:59,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:46:59,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:46:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:46:59,397 INFO L87 Difference]: Start difference. First operand 8810 states and 14107 transitions. Second operand 7 states. [2018-10-27 03:47:02,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:48:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:48:57,330 INFO L93 Difference]: Finished difference Result 18319 states and 29116 transitions. [2018-10-27 03:48:57,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:48:57,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-10-27 03:48:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:48:57,382 INFO L225 Difference]: With dead ends: 18319 [2018-10-27 03:48:57,382 INFO L226 Difference]: Without dead ends: 9515 [2018-10-27 03:48:57,413 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:48:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2018-10-27 03:48:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 9513. [2018-10-27 03:48:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2018-10-27 03:48:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14819 transitions. [2018-10-27 03:48:57,679 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14819 transitions. Word has length 222 [2018-10-27 03:48:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:48:57,679 INFO L481 AbstractCegarLoop]: Abstraction has 9513 states and 14819 transitions. [2018-10-27 03:48:57,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:48:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14819 transitions. [2018-10-27 03:48:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-10-27 03:48:57,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:48:57,692 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:48:57,692 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:48:57,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:48:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1030070866, now seen corresponding path program 1 times [2018-10-27 03:48:57,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:48:57,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:48:57,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:48:57,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:48:57,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:48:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:48:58,247 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:48:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 221 proven. 167 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:48:58,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:48:58,827 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:48:58,828 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-10-27 03:48:58,828 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], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2011], [2013], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [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] [2018-10-27 03:48:58,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:48:58,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:49:14,194 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:49:14,194 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:49:14,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:49:14,204 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:49:18,589 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 78.48% of their original sizes. [2018-10-27 03:49:18,589 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:49:24,413 INFO L415 sIntCurrentIteration]: We unified 408 AI predicates to 408 [2018-10-27 03:49:24,414 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:49:24,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:49:24,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-10-27 03:49:24,414 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:49:24,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:49:24,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:49:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:49:24,416 INFO L87 Difference]: Start difference. First operand 9513 states and 14819 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 03:49:35,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 03:49:35,002 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:49:35,008 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:49:35,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:49:35 BoogieIcfgContainer [2018-10-27 03:49:35,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:49:35,010 INFO L168 Benchmark]: Toolchain (without parser) took 204180.76 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -983.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 03:49:35,011 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:49:35,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1730.42 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. [2018-10-27 03:49:35,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 423.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:49:35,014 INFO L168 Benchmark]: Boogie Preprocessor took 286.35 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:49:35,015 INFO L168 Benchmark]: RCFGBuilder took 8716.30 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: 515.4 MB). Peak memory consumption was 515.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:49:35,016 INFO L168 Benchmark]: TraceAbstraction took 193017.96 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 2.4 GB in the end (delta: -697.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 03:49:35,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 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 1730.42 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 423.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.35 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8716.30 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: 515.4 MB). Peak memory consumption was 515.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 193017.96 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 2.4 GB in the end (delta: -697.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (9513states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (49 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 192.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 158.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1171 SDtfs, 7717 SDslu, 741 SDs, 0 SdLazy, 15725 SolverSat, 4401 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 660 GetRequests, 615 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9513occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961147208589665 AbsIntWeakeningRatio, 0.09220985691573927 AbsIntAvgWeakeningVarsNumRemoved, 339.0810810810811 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 995 NumberOfCodeBlocks, 995 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 990 ConstructedInterpolants, 0 QuantifiedInterpolants, 1461060 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 447/679 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown