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/Problem18_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:10:05,347 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:10:05,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:10:05,367 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:10:05,367 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:10:05,372 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:10:05,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:10:05,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:10:05,380 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:10:05,381 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:10:05,382 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:10:05,383 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:10:05,383 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:10:05,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:10:05,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:10:05,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:10:05,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:10:05,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:10:05,391 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:10:05,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:10:05,396 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:10:05,398 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:10:05,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:10:05,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:10:05,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:10:05,408 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:10:05,409 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:10:05,411 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:10:05,412 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:10:05,414 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:10:05,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:10:05,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:10:05,416 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:10:05,416 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:10:05,417 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:10:05,420 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:10:05,420 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 15:10:05,454 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:10:05,454 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:10:05,457 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:10:05,457 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:10:05,457 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:10:05,457 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:10:05,457 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:10:05,461 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:10:05,461 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:10:05,461 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:10:05,461 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:10:05,462 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:10:05,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:10:05,463 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:10:05,463 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:10:05,463 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:10:05,463 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:10:05,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:10:05,466 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:10:05,466 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:10:05,466 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:10:05,466 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:10:05,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:10:05,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:10:05,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:10:05,467 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:10:05,467 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:10:05,468 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:10:05,468 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:10:05,468 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:10:05,468 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:10:05,468 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:10:05,469 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:10:05,470 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:10:05,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:10:05,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:10:05,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:10:05,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:10:05,559 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:10:05,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-10-27 15:10:05,621 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eea87f608/351cb1d160ed4d9f9c0be7acfa08dfd1/FLAG5cd54b06b [2018-10-27 15:10:06,404 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:10:06,405 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-10-27 15:10:06,434 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eea87f608/351cb1d160ed4d9f9c0be7acfa08dfd1/FLAG5cd54b06b [2018-10-27 15:10:06,456 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eea87f608/351cb1d160ed4d9f9c0be7acfa08dfd1 [2018-10-27 15:10:06,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:10:06,473 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:10:06,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:10:06,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:10:06,481 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:10:06,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:10:06" (1/1) ... [2018-10-27 15:10:06,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:06, skipping insertion in model container [2018-10-27 15:10:06,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:10:06" (1/1) ... [2018-10-27 15:10:06,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:10:06,646 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:10:07,893 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:10:07,898 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:10:08,315 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:10:08,344 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:10:08,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08 WrapperNode [2018-10-27 15:10:08,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:10:08,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:10:08,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:10:08,346 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:10:08,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:10:08,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:10:08,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:10:08,805 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:10:08,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:08,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:09,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (1/1) ... [2018-10-27 15:10:09,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:10:09,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:10:09,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:10:09,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:10:09,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (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 15:10:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:10:09,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:10:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:10:09,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:10:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:10:09,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:10:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:10:09,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:10:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:10:09,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:10:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:10:09,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:10:17,670 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:10:17,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:10:17 BoogieIcfgContainer [2018-10-27 15:10:17,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:10:17,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:10:17,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:10:17,679 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:10:17,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:10:06" (1/3) ... [2018-10-27 15:10:17,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:10:17, skipping insertion in model container [2018-10-27 15:10:17,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:10:08" (2/3) ... [2018-10-27 15:10:17,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:10:17, skipping insertion in model container [2018-10-27 15:10:17,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:10:17" (3/3) ... [2018-10-27 15:10:17,683 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label40_true-unreach-call.c [2018-10-27 15:10:17,693 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:10:17,703 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:10:17,721 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:10:17,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:10:17,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:10:17,769 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:10:17,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:10:17,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:10:17,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:10:17,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:10:17,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:10:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 15:10:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-27 15:10:17,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:10:17,820 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] [2018-10-27 15:10:17,823 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:10:17,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:10:17,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1179800183, now seen corresponding path program 1 times [2018-10-27 15:10:17,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:10:17,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:17,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:10:17,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:17,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:10:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:10:18,338 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:10:18,444 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 15:10:18,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:10:18,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:10:18,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:10:18,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:10:18,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:10:18,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:10:18,473 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 15:10:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:10:25,421 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 15:10:25,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:10:25,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-10-27 15:10:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:10:25,453 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 15:10:25,453 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 15:10:25,465 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 15:10:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 15:10:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 15:10:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 15:10:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-27 15:10:25,634 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 51 [2018-10-27 15:10:25,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:10:25,635 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-27 15:10:25,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:10:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-27 15:10:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 15:10:25,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:10:25,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:25,652 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:10:25,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:10:25,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1038500593, now seen corresponding path program 1 times [2018-10-27 15:10:25,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:10:25,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:25,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:10:25,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:25,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:10:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:10:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:10:25,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:10:25,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:10:25,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:10:25,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:10:25,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:10:25,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:10:25,958 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-27 15:10:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:10:34,410 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-27 15:10:34,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:10:34,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 15:10:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:10:34,432 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 15:10:34,432 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 15:10:34,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:10:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 15:10:34,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-27 15:10:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 15:10:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-27 15:10:34,533 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 140 [2018-10-27 15:10:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:10:34,534 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-27 15:10:34,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:10:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-27 15:10:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-27 15:10:34,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:10:34,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:34,541 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:10:34,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:10:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash -429800468, now seen corresponding path program 1 times [2018-10-27 15:10:34,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:10:34,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:34,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:10:34,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:34,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:10:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:10:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:10:34,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:10:34,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:10:34,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:10:34,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:10:34,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:10:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:10:34,922 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-27 15:10:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:10:44,276 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-10-27 15:10:44,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:10:44,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-27 15:10:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:10:44,335 INFO L225 Difference]: With dead ends: 10194 [2018-10-27 15:10:44,335 INFO L226 Difference]: Without dead ends: 7272 [2018-10-27 15:10:44,353 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 15:10:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-10-27 15:10:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-10-27 15:10:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-10-27 15:10:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-10-27 15:10:44,583 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 187 [2018-10-27 15:10:44,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:10:44,584 INFO L481 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-10-27 15:10:44,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:10:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-10-27 15:10:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 15:10:44,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:10:44,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:44,592 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:10:44,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:10:44,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1302575248, now seen corresponding path program 1 times [2018-10-27 15:10:44,592 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:10:44,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:44,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:10:44,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:44,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:10:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:10:44,912 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:10:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:10:44,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:10:44,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:10:44,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:10:44,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:10:44,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:10:44,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:10:44,985 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-10-27 15:10:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:10:50,393 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-10-27 15:10:50,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:10:50,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-27 15:10:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:10:50,453 INFO L225 Difference]: With dead ends: 17365 [2018-10-27 15:10:50,453 INFO L226 Difference]: Without dead ends: 10163 [2018-10-27 15:10:50,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:10:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-10-27 15:10:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-10-27 15:10:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-10-27 15:10:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-10-27 15:10:50,738 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 189 [2018-10-27 15:10:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:10:50,739 INFO L481 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-10-27 15:10:50,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:10:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-10-27 15:10:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-27 15:10:50,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:10:50,747 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 15:10:50,747 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:10:50,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:10:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1778582221, now seen corresponding path program 1 times [2018-10-27 15:10:50,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:10:50,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:50,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:10:50,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:10:50,750 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:10:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:10:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-27 15:10:51,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:10:51,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:10:51,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:10:51,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:10:51,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:10:51,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:10:51,002 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-10-27 15:11:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:11:01,743 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-10-27 15:11:01,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:11:01,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-10-27 15:11:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:11:01,829 INFO L225 Difference]: With dead ends: 28811 [2018-10-27 15:11:01,829 INFO L226 Difference]: Without dead ends: 18709 [2018-10-27 15:11:01,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:11:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-10-27 15:11:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-10-27 15:11:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-10-27 15:11:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-10-27 15:11:02,274 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 247 [2018-10-27 15:11:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:11:02,275 INFO L481 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-10-27 15:11:02,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:11:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-10-27 15:11:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-27 15:11:02,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:11:02,296 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 15:11:02,296 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:11:02,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:11:02,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1669490635, now seen corresponding path program 1 times [2018-10-27 15:11:02,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:11:02,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:02,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:11:02,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:02,298 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:11:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:11:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 148 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 15:11:02,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:11:02,697 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:11:02,699 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-10-27 15:11:02,703 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], [1931], [1933], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [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], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 15:11:02,773 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:11:02,773 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:11:03,489 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:11:03,509 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:11:03,512 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 15:11:03,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:11:03,553 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:11:04,302 INFO L227 lantSequenceWeakener]: Weakened 282 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-27 15:11:04,302 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:11:04,566 INFO L415 sIntCurrentIteration]: We unified 290 AI predicates to 290 [2018-10-27 15:11:04,568 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:11:04,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:11:04,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 15:11:04,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:11:04,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:11:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:11:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:11:04,571 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown