java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:58:26,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:58:26,604 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:58:26,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:58:26,618 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:58:26,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:58:26,620 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:58:26,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:58:26,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:58:26,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:58:26,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:58:26,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:58:26,627 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:58:26,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:58:26,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:58:26,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:58:26,630 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:58:26,632 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:58:26,634 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:58:26,636 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:58:26,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:58:26,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:58:26,645 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:58:26,645 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:58:26,646 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:58:26,647 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:58:26,648 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:58:26,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:58:26,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:58:26,653 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:58:26,653 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:58:26,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:58:26,655 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:58:26,655 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:58:26,656 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:58:26,656 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:58:26,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:58:26,689 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:58:26,690 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:58:26,690 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:58:26,691 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:58:26,691 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:58:26,691 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:58:26,691 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:58:26,691 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:58:26,692 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:58:26,696 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:58:26,696 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:58:26,696 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:58:26,696 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:58:26,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:58:26,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:58:26,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:58:26,698 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:58:26,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:58:26,698 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:58:26,700 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:58:26,701 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:58:26,701 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:58:26,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:58:26,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:58:26,701 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:58:26,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:58:26,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:58:26,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:58:26,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:58:26,702 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:58:26,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:58:26,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:58:26,703 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:58:26,703 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:58:26,703 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:58:26,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:58:26,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:58:26,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:58:26,778 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:58:26,778 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:58:26,779 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-11-12 16:58:26,848 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab41bf43b/4467d019052e4a94ac22430c9ad2c38f/FLAG406956fb3 [2018-11-12 16:58:27,574 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:58:27,577 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-11-12 16:58:27,609 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab41bf43b/4467d019052e4a94ac22430c9ad2c38f/FLAG406956fb3 [2018-11-12 16:58:27,626 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab41bf43b/4467d019052e4a94ac22430c9ad2c38f [2018-11-12 16:58:27,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:58:27,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:58:27,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:58:27,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:58:27,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:58:27,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:58:27" (1/1) ... [2018-11-12 16:58:27,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67112aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:27, skipping insertion in model container [2018-11-12 16:58:27,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:58:27" (1/1) ... [2018-11-12 16:58:27,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:58:27,798 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:58:28,895 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:58:28,899 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:58:29,418 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:58:29,449 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:58:29,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29 WrapperNode [2018-11-12 16:58:29,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:58:29,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:58:29,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:58:29,451 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:58:29,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:58:29,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:58:29,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:58:29,734 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:58:29,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... [2018-11-12 16:58:29,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:58:29,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:58:29,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:58:29,945 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:58:29,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:58:30,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:58:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:58:30,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:58:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:58:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:58:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:58:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:58:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:58:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:58:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:58:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:58:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:58:30,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:58:39,072 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:58:39,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:58:39 BoogieIcfgContainer [2018-11-12 16:58:39,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:58:39,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:58:39,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:58:39,078 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:58:39,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:58:27" (1/3) ... [2018-11-12 16:58:39,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbf8110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:58:39, skipping insertion in model container [2018-11-12 16:58:39,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:29" (2/3) ... [2018-11-12 16:58:39,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbf8110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:58:39, skipping insertion in model container [2018-11-12 16:58:39,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:58:39" (3/3) ... [2018-11-12 16:58:39,082 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label39_false-unreach-call.c [2018-11-12 16:58:39,092 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:58:39,104 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:58:39,124 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:58:39,191 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:58:39,191 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:58:39,191 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:58:39,191 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:58:39,192 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:58:39,192 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:58:39,192 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:58:39,192 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:58:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:58:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-12 16:58:39,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:39,263 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] [2018-11-12 16:58:39,265 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:39,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:39,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1098805956, now seen corresponding path program 1 times [2018-11-12 16:58:39,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:39,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:39,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:39,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:39,327 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:39,707 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:58:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:58:39,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:58:39,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:58:39,825 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:39,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:58:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:58:39,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:58:39,851 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 16:58:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:46,217 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 16:58:46,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:58:46,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-12 16:58:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:46,252 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 16:58:46,252 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 16:58:46,264 INFO L604 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 [2018-11-12 16:58:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 16:58:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 16:58:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 16:58:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-11-12 16:58:46,412 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 20 [2018-11-12 16:58:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:46,412 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-11-12 16:58:46,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:58:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-11-12 16:58:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-12 16:58:46,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:46,422 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:58:46,422 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:46,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash -249505270, now seen corresponding path program 1 times [2018-11-12 16:58:46,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:46,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:46,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:46,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:46,426 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:58:46,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:58:46,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:58:46,708 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:58:46,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:58:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:58:46,712 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-11-12 16:58:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:54,554 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-11-12 16:58:54,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:58:54,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-11-12 16:58:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:54,577 INFO L225 Difference]: With dead ends: 4419 [2018-11-12 16:58:54,577 INFO L226 Difference]: Without dead ends: 2951 [2018-11-12 16:58:54,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:58:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-12 16:58:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-12 16:58:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-12 16:58:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-11-12 16:58:54,678 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 90 [2018-11-12 16:58:54,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:54,678 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-11-12 16:58:54,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:58:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-11-12 16:58:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-12 16:58:54,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:54,688 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:58:54,688 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:54,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938777, now seen corresponding path program 1 times [2018-11-12 16:58:54,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:54,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:54,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:54,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:54,691 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:58:54,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:58:54,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:58:54,898 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:54,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:58:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:58:54,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:58:54,899 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-11-12 16:59:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:00,310 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-11-12 16:59:00,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:59:00,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-11-12 16:59:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:00,340 INFO L225 Difference]: With dead ends: 7345 [2018-11-12 16:59:00,341 INFO L226 Difference]: Without dead ends: 4426 [2018-11-12 16:59:00,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:59:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-11-12 16:59:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-11-12 16:59:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-11-12 16:59:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-11-12 16:59:00,473 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 91 [2018-11-12 16:59:00,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:00,474 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-11-12 16:59:00,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:59:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-11-12 16:59:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-12 16:59:00,477 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:00,477 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:59:00,478 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:00,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash 677319619, now seen corresponding path program 1 times [2018-11-12 16:59:00,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:00,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:00,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:00,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:00,484 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:59:00,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:00,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:59:00,623 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:00,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:59:00,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:59:00,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:59:00,624 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-11-12 16:59:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:09,272 INFO L93 Difference]: Finished difference Result 14806 states and 21963 transitions. [2018-11-12 16:59:09,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:59:09,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-11-12 16:59:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:09,324 INFO L225 Difference]: With dead ends: 14806 [2018-11-12 16:59:09,324 INFO L226 Difference]: Without dead ends: 10421 [2018-11-12 16:59:09,347 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:59:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10421 states. [2018-11-12 16:59:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10421 to 10272. [2018-11-12 16:59:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10272 states. [2018-11-12 16:59:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 13610 transitions. [2018-11-12 16:59:09,627 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 13610 transitions. Word has length 93 [2018-11-12 16:59:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:09,627 INFO L480 AbstractCegarLoop]: Abstraction has 10272 states and 13610 transitions. [2018-11-12 16:59:09,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:59:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 13610 transitions. [2018-11-12 16:59:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-12 16:59:09,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:09,629 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:59:09,634 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:09,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash 293997458, now seen corresponding path program 1 times [2018-11-12 16:59:09,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:09,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:09,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:09,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:09,636 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:59:09,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:09,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:59:09,867 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:09,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:59:09,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:59:09,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:59:09,868 INFO L87 Difference]: Start difference. First operand 10272 states and 13610 transitions. Second operand 4 states. [2018-11-12 16:59:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:17,323 INFO L93 Difference]: Finished difference Result 38247 states and 52392 transitions. [2018-11-12 16:59:17,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:59:17,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-11-12 16:59:17,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:17,442 INFO L225 Difference]: With dead ends: 38247 [2018-11-12 16:59:17,442 INFO L226 Difference]: Without dead ends: 27981 [2018-11-12 16:59:17,500 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:59:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27981 states. [2018-11-12 16:59:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27981 to 27981. [2018-11-12 16:59:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27981 states. [2018-11-12 16:59:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27981 states to 27981 states and 35213 transitions. [2018-11-12 16:59:18,100 INFO L78 Accepts]: Start accepts. Automaton has 27981 states and 35213 transitions. Word has length 118 [2018-11-12 16:59:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:18,101 INFO L480 AbstractCegarLoop]: Abstraction has 27981 states and 35213 transitions. [2018-11-12 16:59:18,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:59:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 27981 states and 35213 transitions. [2018-11-12 16:59:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-12 16:59:18,131 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:18,132 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:59:18,132 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:18,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:18,132 INFO L82 PathProgramCache]: Analyzing trace with hash -962650317, now seen corresponding path program 1 times [2018-11-12 16:59:18,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:18,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:18,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:18,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:18,134 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 114 proven. 71 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 16:59:18,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:59:18,554 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:59:18,555 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-12 16:59:18,557 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [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], [2124], [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], [2369], [2373], [2377], [2380], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:59:18,630 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:59:18,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:59:19,327 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:59:19,329 INFO L272 AbstractInterpreter]: Visited 142 different actions 142 times. Never merged. Never widened. Performed 1319 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1319 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:59:19,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:19,373 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:59:20,158 INFO L227 lantSequenceWeakener]: Weakened 323 states. On average, predicates are now at 77.31% of their original sizes. [2018-11-12 16:59:20,158 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:59:20,369 INFO L415 sIntCurrentIteration]: We unified 334 AI predicates to 334 [2018-11-12 16:59:20,369 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:59:20,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:59:20,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-12 16:59:20,370 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:20,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:59:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:59:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:59:20,372 INFO L87 Difference]: Start difference. First operand 27981 states and 35213 transitions. Second operand 7 states. [2018-11-12 16:59:32,495 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:00:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:04,159 INFO L93 Difference]: Finished difference Result 56661 states and 71193 transitions. [2018-11-12 17:00:04,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:00:04,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2018-11-12 17:00:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:04,256 INFO L225 Difference]: With dead ends: 56661 [2018-11-12 17:00:04,256 INFO L226 Difference]: Without dead ends: 28686 [2018-11-12 17:00:04,325 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 335 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:00:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28686 states. [2018-11-12 17:00:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28686 to 28684. [2018-11-12 17:00:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28684 states. [2018-11-12 17:00:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28684 states to 28684 states and 35928 transitions. [2018-11-12 17:00:04,839 INFO L78 Accepts]: Start accepts. Automaton has 28684 states and 35928 transitions. Word has length 335 [2018-11-12 17:00:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:04,841 INFO L480 AbstractCegarLoop]: Abstraction has 28684 states and 35928 transitions. [2018-11-12 17:00:04,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:00:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28684 states and 35928 transitions. [2018-11-12 17:00:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-11-12 17:00:04,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:04,880 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:00:04,881 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:04,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1691505072, now seen corresponding path program 1 times [2018-11-12 17:00:04,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:04,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:04,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:04,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:04,883 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:05,502 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:00:05,675 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:00:05,895 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:00:06,315 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 17:00:06,818 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-12 17:00:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 116 proven. 420 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 17:00:07,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:00:07,994 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:00:07,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 523 with the following transitions: [2018-11-12 17:00:07,995 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [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], [2124], [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], [2369], [2373], [2377], [2380], [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] [2018-11-12 17:00:08,002 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:00:08,002 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:00:08,731 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:00:08,731 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 times. Merged at 4 different actions 4 times. Never widened. Performed 4327 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4327 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 17:00:08,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:08,767 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:00:09,933 INFO L227 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 17:00:09,934 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:00:11,079 INFO L415 sIntCurrentIteration]: We unified 521 AI predicates to 521 [2018-11-12 17:00:11,079 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:00:11,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:00:11,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [11] total 31 [2018-11-12 17:00:11,080 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:11,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 17:00:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 17:00:11,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-11-12 17:00:11,082 INFO L87 Difference]: Start difference. First operand 28684 states and 35928 transitions. Second operand 22 states. [2018-11-12 17:00:40,586 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:01:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:24,543 INFO L93 Difference]: Finished difference Result 58839 states and 73388 transitions. [2018-11-12 17:01:24,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 17:01:24,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 522 [2018-11-12 17:01:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:24,659 INFO L225 Difference]: With dead ends: 58839 [2018-11-12 17:01:24,659 INFO L226 Difference]: Without dead ends: 28689 [2018-11-12 17:01:24,755 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 537 GetRequests, 485 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=268, Invalid=1138, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 17:01:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28689 states. [2018-11-12 17:01:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28689 to 28684. [2018-11-12 17:01:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28684 states. [2018-11-12 17:01:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28684 states to 28684 states and 35920 transitions. [2018-11-12 17:01:25,465 INFO L78 Accepts]: Start accepts. Automaton has 28684 states and 35920 transitions. Word has length 522 [2018-11-12 17:01:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:01:25,466 INFO L480 AbstractCegarLoop]: Abstraction has 28684 states and 35920 transitions. [2018-11-12 17:01:25,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 17:01:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 28684 states and 35920 transitions. [2018-11-12 17:01:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-11-12 17:01:25,518 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:01:25,519 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:01:25,519 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:01:25,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:25,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2103637269, now seen corresponding path program 1 times [2018-11-12 17:01:25,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:01:25,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:25,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:01:25,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:25,522 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:01:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:01:26,601 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 17:01:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 134 proven. 379 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 17:01:28,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:01:28,659 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:01:28,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 864 with the following transitions: [2018-11-12 17:01:28,660 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [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], [2124], [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], [2369], [2373], [2377], [2380], [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], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 17:01:28,678 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:01:28,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:01:29,790 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:01:29,790 INFO L272 AbstractInterpreter]: Visited 538 different actions 1070 times. Merged at 5 different actions 5 times. Never widened. Performed 14939 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14939 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 17:01:29,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:29,798 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:01:31,314 INFO L227 lantSequenceWeakener]: Weakened 554 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-12 17:01:31,314 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:01:34,127 INFO L415 sIntCurrentIteration]: We unified 862 AI predicates to 862 [2018-11-12 17:01:34,127 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:01:34,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:01:34,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [10] total 38 [2018-11-12 17:01:34,128 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:01:34,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-12 17:01:34,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-12 17:01:34,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-12 17:01:34,130 INFO L87 Difference]: Start difference. First operand 28684 states and 35920 transitions. Second operand 30 states. Received shutdown request... [2018-11-12 17:01:57,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 17:01:57,698 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:01:57,703 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:01:57,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:01:57 BoogieIcfgContainer [2018-11-12 17:01:57,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:01:57,704 INFO L168 Benchmark]: Toolchain (without parser) took 210065.64 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.8 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 17:01:57,706 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:01:57,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1808.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:01:57,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 283.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -952.9 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:01:57,708 INFO L168 Benchmark]: Boogie Preprocessor took 210.52 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. [2018-11-12 17:01:57,709 INFO L168 Benchmark]: RCFGBuilder took 9128.15 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: 515.7 MB). Peak memory consumption was 515.7 MB. Max. memory is 7.1 GB. [2018-11-12 17:01:57,710 INFO L168 Benchmark]: TraceAbstraction took 198629.41 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -575.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 17:01:57,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1808.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 283.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -952.9 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.52 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 9128.15 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: 515.7 MB). Peak memory consumption was 515.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198629.41 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -575.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (28684states) and FLOYD_HOARE automaton (currently 13 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (452 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 198.5s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 177.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2262 SDtfs, 20116 SDslu, 1279 SDs, 0 SdLazy, 42857 SolverSat, 5936 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1780 GetRequests, 1580 SyntacticMatches, 100 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28684occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9978720067841648 AbsIntWeakeningRatio, 0.0675596971461852 AbsIntAvgWeakeningVarsNumRemoved, 15.867210250436809 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 217 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2132 NumberOfCodeBlocks, 2132 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2124 ConstructedInterpolants, 0 QuantifiedInterpolants, 5775004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 708/1578 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown