java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:25:02,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:25:02,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:25:02,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:25:02,663 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:25:02,664 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:25:02,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:25:02,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:25:02,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:25:02,670 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:25:02,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:25:02,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:25:02,672 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:25:02,673 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:25:02,674 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:25:02,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:25:02,676 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:25:02,678 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:25:02,679 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:25:02,681 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:25:02,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:25:02,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:25:02,686 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:25:02,686 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:25:02,686 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:25:02,687 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:25:02,688 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:25:02,689 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:25:02,690 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:25:02,691 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:25:02,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:25:02,692 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:25:02,692 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:25:02,692 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:25:02,693 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:25:02,694 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:25:02,694 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:25:02,713 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:25:02,713 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:25:02,714 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:25:02,714 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:25:02,717 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:25:02,717 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:25:02,717 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:25:02,717 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:25:02,718 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:25:02,718 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:25:02,718 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:25:02,718 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:25:02,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:25:02,719 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:25:02,719 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:25:02,719 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:25:02,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:25:02,720 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:25:02,721 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:25:02,721 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:25:02,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:25:02,721 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:25:02,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:25:02,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:25:02,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:02,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:25:02,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:25:02,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:25:02,723 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:25:02,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:25:02,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:25:02,724 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:25:02,724 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:25:02,724 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:25:02,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:25:02,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:25:02,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:25:02,799 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:25:02,799 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:25:02,800 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label35_false-unreach-call.c [2018-10-24 18:25:02,860 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52b5954fb/d047db1eb8754d7bbdb1aef495e697d1/FLAGa4b52c0ca [2018-10-24 18:25:03,732 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:25:03,733 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label35_false-unreach-call.c [2018-10-24 18:25:03,771 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52b5954fb/d047db1eb8754d7bbdb1aef495e697d1/FLAGa4b52c0ca [2018-10-24 18:25:03,788 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52b5954fb/d047db1eb8754d7bbdb1aef495e697d1 [2018-10-24 18:25:03,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:25:03,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:25:03,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:03,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:25:03,807 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:25:03,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:03" (1/1) ... [2018-10-24 18:25:03,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675171b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:03, skipping insertion in model container [2018-10-24 18:25:03,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:03" (1/1) ... [2018-10-24 18:25:03,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:25:04,002 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:25:05,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:05,619 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:25:06,354 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:06,391 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:25:06,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06 WrapperNode [2018-10-24 18:25:06,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:06,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:06,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:25:06,394 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:25:06,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:06,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:07,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:25:07,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:25:07,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:25:07,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... [2018-10-24 18:25:07,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:25:07,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:25:07,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:25:07,516 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:25:07,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:25:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:25:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:25:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:25:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:25:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:25:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:25:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:25:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:25:07,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:25:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:25:07,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:25:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:25:07,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:25:19,874 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:25:19,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:19 BoogieIcfgContainer [2018-10-24 18:25:19,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:25:19,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:25:19,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:25:19,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:25:19,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:25:03" (1/3) ... [2018-10-24 18:25:19,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c7f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:19, skipping insertion in model container [2018-10-24 18:25:19,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:06" (2/3) ... [2018-10-24 18:25:19,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c7f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:19, skipping insertion in model container [2018-10-24 18:25:19,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:19" (3/3) ... [2018-10-24 18:25:19,884 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label35_false-unreach-call.c [2018-10-24 18:25:19,894 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:25:19,905 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:25:19,926 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:25:19,982 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:25:19,982 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:25:19,982 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:25:19,983 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:25:19,983 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:25:19,983 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:25:19,983 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:25:19,983 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:25:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:25:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 18:25:20,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:20,043 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:20,046 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:20,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:20,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1619537211, now seen corresponding path program 1 times [2018-10-24 18:25:20,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:20,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:20,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:20,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:20,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:20,518 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 18:25:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:20,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:20,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:25:20,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:20,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:25:20,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:25:20,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:25:20,553 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 18:25:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:35,942 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 18:25:35,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:25:35,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-24 18:25:35,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:35,995 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 18:25:35,995 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 18:25:36,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:25:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 18:25:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 18:25:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 18:25:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 18:25:36,197 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 17 [2018-10-24 18:25:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:36,197 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 18:25:36,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:25:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 18:25:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 18:25:36,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:36,208 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:36,208 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:36,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash 958659262, now seen corresponding path program 1 times [2018-10-24 18:25:36,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:36,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:36,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:36,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:36,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:36,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:36,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:25:36,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:36,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:25:36,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:25:36,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:25:36,635 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 18:25:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:52,095 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 18:25:52,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:25:52,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2018-10-24 18:25:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:52,125 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 18:25:52,126 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 18:25:52,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:25:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 18:25:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 18:25:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 18:25:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-24 18:25:52,258 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 87 [2018-10-24 18:25:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:52,259 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-24 18:25:52,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:25:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-24 18:25:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-24 18:25:52,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:52,264 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:52,265 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:52,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash -103892254, now seen corresponding path program 1 times [2018-10-24 18:25:52,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:52,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:52,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:52,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:52,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:52,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:52,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:25:52,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:52,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:25:52,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:25:52,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:25:52,567 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-24 18:26:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:07,374 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-24 18:26:07,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:26:07,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2018-10-24 18:26:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:07,419 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 18:26:07,419 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 18:26:07,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:26:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 18:26:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 18:26:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 18:26:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-24 18:26:07,635 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 89 [2018-10-24 18:26:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:07,636 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-24 18:26:07,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:26:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-24 18:26:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 18:26:07,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:07,647 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:26:07,647 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:07,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:07,647 INFO L82 PathProgramCache]: Analyzing trace with hash 223981530, now seen corresponding path program 1 times [2018-10-24 18:26:07,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:07,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:07,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:07,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:07,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:07,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:07,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:26:07,817 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:07,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:26:07,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:26:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:07,818 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 3 states. [2018-10-24 18:26:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:14,166 INFO L93 Difference]: Finished difference Result 21004 states and 31912 transitions. [2018-10-24 18:26:14,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:26:14,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-24 18:26:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:14,221 INFO L225 Difference]: With dead ends: 21004 [2018-10-24 18:26:14,222 INFO L226 Difference]: Without dead ends: 13835 [2018-10-24 18:26:14,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2018-10-24 18:26:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 13812. [2018-10-24 18:26:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13812 states. [2018-10-24 18:26:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13812 states to 13812 states and 18586 transitions. [2018-10-24 18:26:14,557 INFO L78 Accepts]: Start accepts. Automaton has 13812 states and 18586 transitions. Word has length 133 [2018-10-24 18:26:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:14,558 INFO L481 AbstractCegarLoop]: Abstraction has 13812 states and 18586 transitions. [2018-10-24 18:26:14,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:26:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13812 states and 18586 transitions. [2018-10-24 18:26:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 18:26:14,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:14,565 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:26:14,565 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:14,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1813117700, now seen corresponding path program 1 times [2018-10-24 18:26:14,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:14,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:14,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:14,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:14,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:14,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:14,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:26:14,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:14,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:26:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:26:14,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:14,740 INFO L87 Difference]: Start difference. First operand 13812 states and 18586 transitions. Second operand 3 states. [2018-10-24 18:26:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:21,671 INFO L93 Difference]: Finished difference Result 34306 states and 48857 transitions. [2018-10-24 18:26:21,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:26:21,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-10-24 18:26:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:21,745 INFO L225 Difference]: With dead ends: 34306 [2018-10-24 18:26:21,745 INFO L226 Difference]: Without dead ends: 20500 [2018-10-24 18:26:21,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20500 states. [2018-10-24 18:26:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20500 to 20470. [2018-10-24 18:26:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20470 states. [2018-10-24 18:26:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20470 states to 20470 states and 27161 transitions. [2018-10-24 18:26:22,200 INFO L78 Accepts]: Start accepts. Automaton has 20470 states and 27161 transitions. Word has length 138 [2018-10-24 18:26:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:22,200 INFO L481 AbstractCegarLoop]: Abstraction has 20470 states and 27161 transitions. [2018-10-24 18:26:22,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:26:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20470 states and 27161 transitions. [2018-10-24 18:26:22,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 18:26:22,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:22,205 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:22,206 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:22,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:22,206 INFO L82 PathProgramCache]: Analyzing trace with hash -599345729, now seen corresponding path program 1 times [2018-10-24 18:26:22,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:22,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:22,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:22,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:22,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:22,515 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:26:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:22,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:26:22,667 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:26:22,668 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-24 18:26:22,673 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2663], [2665], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3120], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:26:22,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:26:22,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:26:25,450 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:26:30,777 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:26:30,779 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:26:30,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:30,802 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:26:34,960 INFO L232 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 71.08% of their original sizes. [2018-10-24 18:26:34,960 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:26:36,955 INFO L413 sIntCurrentIteration]: We have 207 unified AI predicates [2018-10-24 18:26:36,956 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:26:36,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:26:36,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 18:26:36,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:36,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 18:26:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 18:26:36,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:26:36,959 INFO L87 Difference]: Start difference. First operand 20470 states and 27161 transitions. Second operand 11 states. Received shutdown request... [2018-10-24 18:28:51,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:28:51,042 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:28:51,049 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:28:51,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:28:51 BoogieIcfgContainer [2018-10-24 18:28:51,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:28:51,051 INFO L168 Benchmark]: Toolchain (without parser) took 227250.39 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -736.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 18:28:51,052 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:28:51,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2590.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:51,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 660.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:51,057 INFO L168 Benchmark]: Boogie Preprocessor took 461.13 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:51,058 INFO L168 Benchmark]: RCFGBuilder took 12359.17 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 186.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 12.1 MB). Peak memory consumption was 661.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:51,059 INFO L168 Benchmark]: TraceAbstraction took 211173.88 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 18:28:51,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2590.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 660.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 461.13 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12359.17 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 186.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 12.1 MB). Peak memory consumption was 661.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211173.88 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (20470states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5980 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 193.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4631 SDtfs, 11900 SDslu, 2372 SDs, 0 SdLazy, 21296 SolverSat, 5186 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 136.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 243 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20470occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955109624674842 AbsIntWeakeningRatio, 0.14492753623188406 AbsIntAvgWeakeningVarsNumRemoved, 49.77777777777778 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 1032 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 672 NumberOfCodeBlocks, 672 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 666 ConstructedInterpolants, 0 QuantifiedInterpolants, 223611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 128/130 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown