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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:09:49,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:09:49,977 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:09:49,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:09:49,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:09:49,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:09:49,991 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:09:49,993 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:09:49,995 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:09:49,995 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:09:49,996 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:09:49,997 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:09:49,997 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:09:49,998 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:09:50,000 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:09:50,000 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:09:50,001 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:09:50,003 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:09:50,005 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:09:50,006 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:09:50,008 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:09:50,014 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:09:50,021 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:09:50,021 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:09:50,021 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:09:50,022 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:09:50,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:09:50,025 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:09:50,027 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:09:50,029 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:09:50,029 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:09:50,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:09:50,030 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:09:50,030 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:09:50,033 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:09:50,034 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:09:50,034 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:09:50,060 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:09:50,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:09:50,061 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:09:50,062 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:09:50,062 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:09:50,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:09:50,062 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:09:50,063 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:09:50,063 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:09:50,063 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:09:50,063 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:09:50,063 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:09:50,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:09:50,064 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:09:50,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:09:50,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:09:50,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:09:50,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:09:50,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:09:50,066 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:09:50,067 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:09:50,067 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:09:50,067 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:09:50,067 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:09:50,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:09:50,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:09:50,069 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:09:50,069 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:09:50,069 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:09:50,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:09:50,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:09:50,070 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:09:50,070 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:09:50,070 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:09:50,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:09:50,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:09:50,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:09:50,160 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:09:50,160 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:09:50,161 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c [2018-10-27 11:09:50,226 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4dac2b88b/9d86e24ea9aa412eabdf50ded4ba0b65/FLAG3ad6836ab [2018-10-27 11:09:50,805 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:09:50,806 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c [2018-10-27 11:09:50,826 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4dac2b88b/9d86e24ea9aa412eabdf50ded4ba0b65/FLAG3ad6836ab [2018-10-27 11:09:50,845 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4dac2b88b/9d86e24ea9aa412eabdf50ded4ba0b65 [2018-10-27 11:09:50,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:09:50,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:09:50,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:09:50,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:09:50,868 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:09:50,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:09:50" (1/1) ... [2018-10-27 11:09:50,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324bd927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:50, skipping insertion in model container [2018-10-27 11:09:50,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:09:50" (1/1) ... [2018-10-27 11:09:50,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:09:50,964 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:09:51,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:09:51,624 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:09:51,841 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:09:51,859 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:09:51,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51 WrapperNode [2018-10-27 11:09:51,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:09:51,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:09:51,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:09:51,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:09:51,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:51,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:09:52,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:09:52,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:09:52,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:09:52,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (1/1) ... [2018-10-27 11:09:52,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:09:52,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:09:52,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:09:52,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:09:52,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (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 11:09:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:09:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:09:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:09:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:09:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:09:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:09:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:09:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:09:57,367 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:09:57,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:09:57 BoogieIcfgContainer [2018-10-27 11:09:57,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:09:57,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:09:57,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:09:57,372 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:09:57,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:09:50" (1/3) ... [2018-10-27 11:09:57,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573dd94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:09:57, skipping insertion in model container [2018-10-27 11:09:57,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:51" (2/3) ... [2018-10-27 11:09:57,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573dd94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:09:57, skipping insertion in model container [2018-10-27 11:09:57,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:09:57" (3/3) ... [2018-10-27 11:09:57,377 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label08_false-unreach-call.c [2018-10-27 11:09:57,387 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:09:57,396 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:09:57,415 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:09:57,455 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:09:57,456 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:09:57,456 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:09:57,456 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:09:57,457 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:09:57,457 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:09:57,457 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:09:57,457 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:09:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 11:09:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 11:09:57,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:09:57,496 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] [2018-10-27 11:09:57,499 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:09:57,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:09:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1486587100, now seen corresponding path program 1 times [2018-10-27 11:09:57,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:09:57,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:09:57,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:09:57,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:09:57,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:09:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:09:57,964 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:09:58,064 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 11:09:58,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:09:58,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:09:58,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:09:58,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:09:58,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:09:58,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:09:58,102 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-27 11:10:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:10:00,612 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-27 11:10:00,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:10:00,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-27 11:10:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:10:00,638 INFO L225 Difference]: With dead ends: 782 [2018-10-27 11:10:00,638 INFO L226 Difference]: Without dead ends: 487 [2018-10-27 11:10:00,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:10:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-27 11:10:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-27 11:10:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-27 11:10:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-10-27 11:10:00,751 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 22 [2018-10-27 11:10:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:10:00,751 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-10-27 11:10:00,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:10:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-10-27 11:10:00,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 11:10:00,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:10:00,760 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:10:00,761 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:10:00,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:00,761 INFO L82 PathProgramCache]: Analyzing trace with hash 838371767, now seen corresponding path program 1 times [2018-10-27 11:10:00,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:10:00,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:00,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:10:00,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:00,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:10:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:10:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:10:01,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:10:01,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:10:01,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:10:01,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:10:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:10:01,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:10:01,185 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-10-27 11:10:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:10:07,356 INFO L93 Difference]: Finished difference Result 1804 states and 3389 transitions. [2018-10-27 11:10:07,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 11:10:07,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-27 11:10:07,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:10:07,373 INFO L225 Difference]: With dead ends: 1804 [2018-10-27 11:10:07,373 INFO L226 Difference]: Without dead ends: 1328 [2018-10-27 11:10:07,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 11:10:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2018-10-27 11:10:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1286. [2018-10-27 11:10:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1286 states. [2018-10-27 11:10:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1955 transitions. [2018-10-27 11:10:07,471 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1955 transitions. Word has length 93 [2018-10-27 11:10:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:10:07,472 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1955 transitions. [2018-10-27 11:10:07,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:10:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1955 transitions. [2018-10-27 11:10:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 11:10:07,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:10:07,476 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:10:07,476 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:10:07,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:07,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1072390589, now seen corresponding path program 1 times [2018-10-27 11:10:07,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:10:07,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:07,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:10:07,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:07,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:10:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:10:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:10:07,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:10:07,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:10:07,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:10:07,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:10:07,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:10:07,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:10:07,664 INFO L87 Difference]: Start difference. First operand 1286 states and 1955 transitions. Second operand 6 states. [2018-10-27 11:10:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:10:12,030 INFO L93 Difference]: Finished difference Result 4479 states and 7249 transitions. [2018-10-27 11:10:12,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:10:12,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-27 11:10:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:10:12,064 INFO L225 Difference]: With dead ends: 4479 [2018-10-27 11:10:12,064 INFO L226 Difference]: Without dead ends: 3199 [2018-10-27 11:10:12,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:10:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2018-10-27 11:10:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3160. [2018-10-27 11:10:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2018-10-27 11:10:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4524 transitions. [2018-10-27 11:10:12,206 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4524 transitions. Word has length 103 [2018-10-27 11:10:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:10:12,208 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 4524 transitions. [2018-10-27 11:10:12,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:10:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4524 transitions. [2018-10-27 11:10:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 11:10:12,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:10:12,221 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:10:12,221 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:10:12,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2038666381, now seen corresponding path program 1 times [2018-10-27 11:10:12,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:10:12,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:12,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:10:12,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:12,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:10:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:10:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:10:12,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:10:12,581 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:10:12,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-10-27 11:10:12,584 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 11:10:12,628 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:10:12,629 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:10:13,109 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:10:13,733 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:10:13,735 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 11:10:13,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:13,788 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:10:14,704 INFO L227 lantSequenceWeakener]: Weakened 158 states. On average, predicates are now at 72.98% of their original sizes. [2018-10-27 11:10:14,704 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:10:15,054 INFO L415 sIntCurrentIteration]: We unified 166 AI predicates to 166 [2018-10-27 11:10:15,054 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:10:15,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:10:15,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 11:10:15,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:10:15,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:10:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:10:15,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:10:15,057 INFO L87 Difference]: Start difference. First operand 3160 states and 4524 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown