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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:51:20,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:51:20,600 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:51:20,613 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:51:20,614 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:51:20,615 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:51:20,616 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:51:20,617 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:51:20,619 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:51:20,620 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:51:20,621 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:51:20,621 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:51:20,622 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:51:20,623 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:51:20,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:51:20,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:51:20,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:51:20,630 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:51:20,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:51:20,641 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:51:20,642 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:51:20,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:51:20,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:51:20,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:51:20,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:51:20,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:51:20,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:51:20,654 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:51:20,654 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:51:20,656 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:51:20,656 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:51:20,657 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:51:20,657 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:51:20,657 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:51:20,660 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:51:20,660 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:51:20,661 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:51:20,676 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:51:20,676 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:51:20,677 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:51:20,677 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:51:20,677 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:51:20,679 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:51:20,680 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:51:20,680 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:51:20,680 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:51:20,680 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:51:20,681 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:51:20,681 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:51:20,681 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:51:20,682 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:51:20,682 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:51:20,682 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:51:20,682 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:51:20,682 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:51:20,683 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:51:20,683 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:51:20,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:51:20,683 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:51:20,683 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:51:20,684 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:51:20,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:51:20,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:51:20,685 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:51:20,685 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:51:20,685 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:51:20,685 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:51:20,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:51:20,686 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:51:20,686 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:51:20,686 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:51:20,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:51:20,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:51:20,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:51:20,767 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:51:20,767 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:51:20,768 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-11-07 02:51:20,824 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b90c0f0/683d3f9975db4b9588d55fb5ed9c69a2/FLAGf10279f01 [2018-11-07 02:51:21,340 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:51:21,344 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-11-07 02:51:21,359 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b90c0f0/683d3f9975db4b9588d55fb5ed9c69a2/FLAGf10279f01 [2018-11-07 02:51:21,374 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b90c0f0/683d3f9975db4b9588d55fb5ed9c69a2 [2018-11-07 02:51:21,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:51:21,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:51:21,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:51:21,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:51:21,392 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:51:21,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:51:21" (1/1) ... [2018-11-07 02:51:21,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:21, skipping insertion in model container [2018-11-07 02:51:21,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:51:21" (1/1) ... [2018-11-07 02:51:21,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:51:21,466 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:51:21,877 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:51:21,885 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:51:22,057 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:51:22,083 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:51:22,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22 WrapperNode [2018-11-07 02:51:22,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:51:22,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:51:22,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:51:22,085 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:51:22,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:51:22,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:51:22,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:51:22,211 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:51:22,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (1/1) ... [2018-11-07 02:51:22,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:51:22,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:51:22,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:51:22,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:51:22,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (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 [2018-11-07 02:51:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:51:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:51:22,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:51:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:51:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:51:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:51:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:51:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:51:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:51:25,605 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:51:25,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:51:25 BoogieIcfgContainer [2018-11-07 02:51:25,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:51:25,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:51:25,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:51:25,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:51:25,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:51:21" (1/3) ... [2018-11-07 02:51:25,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fc28a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:51:25, skipping insertion in model container [2018-11-07 02:51:25,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:22" (2/3) ... [2018-11-07 02:51:25,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fc28a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:51:25, skipping insertion in model container [2018-11-07 02:51:25,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:51:25" (3/3) ... [2018-11-07 02:51:25,616 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label59_true-unreach-call.c [2018-11-07 02:51:25,626 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:51:25,636 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:51:25,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:51:25,695 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:51:25,695 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:51:25,696 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:51:25,696 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:51:25,696 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:51:25,696 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:51:25,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:51:25,697 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:51:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:51:25,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-07 02:51:25,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:25,740 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:51:25,742 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:25,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1019321972, now seen corresponding path program 1 times [2018-11-07 02:51:25,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:25,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:25,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:25,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:25,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:26,322 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-11-07 02:51:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:26,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:26,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:51:26,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:26,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:51:26,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:51:26,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:26,420 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-11-07 02:51:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:28,885 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-11-07 02:51:28,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:51:28,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-11-07 02:51:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:28,922 INFO L225 Difference]: With dead ends: 737 [2018-11-07 02:51:28,922 INFO L226 Difference]: Without dead ends: 515 [2018-11-07 02:51:28,936 INFO L604 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 [2018-11-07 02:51:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-11-07 02:51:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-11-07 02:51:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:51:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-11-07 02:51:29,070 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 72 [2018-11-07 02:51:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:29,071 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-11-07 02:51:29,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:51:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-11-07 02:51:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 02:51:29,091 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:29,091 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:51:29,092 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:29,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1630388773, now seen corresponding path program 1 times [2018-11-07 02:51:29,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:29,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:29,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:29,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:29,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:29,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:51:29,528 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:51:29,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-11-07 02:51:29,532 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:51:29,615 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:51:29,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:51:31,713 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:51:34,360 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 02:51:34,361 INFO L272 AbstractInterpreter]: Visited 79 different actions 223 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:51:34,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:34,375 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 02:51:34,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:51:34,376 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 02:51:34,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:34,393 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 02:51:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:34,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 02:51:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:34,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 02:51:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:34,995 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:51:34,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-11-07 02:51:34,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:34,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:51:34,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:51:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:51:34,997 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 3 states. [2018-11-07 02:51:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:36,211 INFO L93 Difference]: Finished difference Result 994 states and 1782 transitions. [2018-11-07 02:51:36,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:51:36,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-11-07 02:51:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:36,218 INFO L225 Difference]: With dead ends: 994 [2018-11-07 02:51:36,218 INFO L226 Difference]: Without dead ends: 644 [2018-11-07 02:51:36,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:51:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-11-07 02:51:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-11-07 02:51:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-11-07 02:51:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1034 transitions. [2018-11-07 02:51:36,256 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1034 transitions. Word has length 143 [2018-11-07 02:51:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:36,257 INFO L480 AbstractCegarLoop]: Abstraction has 644 states and 1034 transitions. [2018-11-07 02:51:36,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:51:36,257 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1034 transitions. [2018-11-07 02:51:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 02:51:36,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:36,262 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:51:36,263 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:36,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:36,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1733767164, now seen corresponding path program 1 times [2018-11-07 02:51:36,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:36,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:36,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:36,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:36,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:36,587 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:51:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:36,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:36,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:51:36,705 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:36,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:51:36,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:51:36,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:51:36,707 INFO L87 Difference]: Start difference. First operand 644 states and 1034 transitions. Second operand 6 states. [2018-11-07 02:51:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:40,432 INFO L93 Difference]: Finished difference Result 1847 states and 3197 transitions. [2018-11-07 02:51:40,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:51:40,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 02:51:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:40,449 INFO L225 Difference]: With dead ends: 1847 [2018-11-07 02:51:40,449 INFO L226 Difference]: Without dead ends: 1209 [2018-11-07 02:51:40,456 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:51:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-11-07 02:51:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1185. [2018-11-07 02:51:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-11-07 02:51:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1872 transitions. [2018-11-07 02:51:40,529 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1872 transitions. Word has length 154 [2018-11-07 02:51:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:40,530 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1872 transitions. [2018-11-07 02:51:40,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:51:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1872 transitions. [2018-11-07 02:51:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 02:51:40,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:40,540 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:51:40,541 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:40,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1561785849, now seen corresponding path program 1 times [2018-11-07 02:51:40,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:40,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:40,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:40,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:40,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:40,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:40,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:51:40,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:40,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:51:40,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:51:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:40,784 INFO L87 Difference]: Start difference. First operand 1185 states and 1872 transitions. Second operand 4 states. [2018-11-07 02:51:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:42,486 INFO L93 Difference]: Finished difference Result 2364 states and 3744 transitions. [2018-11-07 02:51:42,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:51:42,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2018-11-07 02:51:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:42,495 INFO L225 Difference]: With dead ends: 2364 [2018-11-07 02:51:42,496 INFO L226 Difference]: Without dead ends: 1185 [2018-11-07 02:51:42,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2018-11-07 02:51:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2018-11-07 02:51:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-11-07 02:51:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1698 transitions. [2018-11-07 02:51:42,545 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1698 transitions. Word has length 201 [2018-11-07 02:51:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:42,546 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1698 transitions. [2018-11-07 02:51:42,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:51:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1698 transitions. [2018-11-07 02:51:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-07 02:51:42,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:42,553 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:51:42,553 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:42,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash -809847816, now seen corresponding path program 1 times [2018-11-07 02:51:42,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:42,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:42,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:42,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:42,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:42,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:42,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:51:42,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:42,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:51:42,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:51:42,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:51:42,876 INFO L87 Difference]: Start difference. First operand 1185 states and 1698 transitions. Second operand 6 states. [2018-11-07 02:51:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:44,052 INFO L93 Difference]: Finished difference Result 3008 states and 4520 transitions. [2018-11-07 02:51:44,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:51:44,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-11-07 02:51:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:44,067 INFO L225 Difference]: With dead ends: 3008 [2018-11-07 02:51:44,067 INFO L226 Difference]: Without dead ends: 1829 [2018-11-07 02:51:44,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:51:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2018-11-07 02:51:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1793. [2018-11-07 02:51:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2018-11-07 02:51:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2543 transitions. [2018-11-07 02:51:44,153 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2543 transitions. Word has length 204 [2018-11-07 02:51:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:44,153 INFO L480 AbstractCegarLoop]: Abstraction has 1793 states and 2543 transitions. [2018-11-07 02:51:44,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:51:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2543 transitions. [2018-11-07 02:51:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 02:51:44,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:44,163 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 02:51:44,163 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:44,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:44,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1298522180, now seen corresponding path program 1 times [2018-11-07 02:51:44,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:44,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:44,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:44,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:44,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:51:44,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:51:44,406 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:51:44,407 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-07 02:51:44,407 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:51:44,412 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:51:44,412 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:51:46,222 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:51:46,311 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:51:46,312 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 02:51:46,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:46,315 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:51:49,535 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 74.19% of their original sizes. [2018-11-07 02:51:49,535 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:51:52,096 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-07 02:51:52,096 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:51:52,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:51:52,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 02:51:52,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:52,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 02:51:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 02:51:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 02:51:52,099 INFO L87 Difference]: Start difference. First operand 1793 states and 2543 transitions. Second operand 10 states. [2018-11-07 02:52:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:52:35,277 INFO L93 Difference]: Finished difference Result 3729 states and 5328 transitions. [2018-11-07 02:52:35,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 02:52:35,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2018-11-07 02:52:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:52:35,287 INFO L225 Difference]: With dead ends: 3729 [2018-11-07 02:52:35,288 INFO L226 Difference]: Without dead ends: 1942 [2018-11-07 02:52:35,296 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 02:52:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2018-11-07 02:52:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1937. [2018-11-07 02:52:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-11-07 02:52:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2695 transitions. [2018-11-07 02:52:35,398 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2695 transitions. Word has length 224 [2018-11-07 02:52:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:52:35,398 INFO L480 AbstractCegarLoop]: Abstraction has 1937 states and 2695 transitions. [2018-11-07 02:52:35,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 02:52:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2695 transitions. [2018-11-07 02:52:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 02:52:35,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:52:35,410 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 02:52:35,411 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:52:35,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:52:35,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1893058164, now seen corresponding path program 1 times [2018-11-07 02:52:35,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:52:35,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:52:35,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:52:35,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:52:35,413 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:52:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:52:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:52:35,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:52:35,977 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:52:35,977 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-07 02:52:35,977 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:52:35,981 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:52:35,982 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:52:37,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:52:42,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 02:52:42,219 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:52:42,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:52:42,229 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 02:52:42,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:52:42,229 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 02:52:42,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:52:42,239 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 02:52:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:52:42,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 02:52:57,129 WARN L179 SmtUtils]: Spent 14.56 s on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2018-11-07 02:52:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:52:57,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 02:52:57,353 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-11-07 02:52:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:52:57,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 02:52:57,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2018-11-07 02:52:57,590 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 02:52:57,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 02:52:57,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 02:52:57,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-11-07 02:52:57,591 INFO L87 Difference]: Start difference. First operand 1937 states and 2695 transitions. Second operand 12 states. [2018-11-07 02:53:01,775 WARN L179 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-11-07 02:53:07,155 WARN L179 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-11-07 02:53:17,338 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 57 DAG size of output: 26 [2018-11-07 02:53:21,323 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2018-11-07 02:53:29,740 WARN L179 SmtUtils]: Spent 8.18 s on a formula simplification that was a NOOP. DAG size: 53 [2018-11-07 02:53:36,810 WARN L179 SmtUtils]: Spent 6.82 s on a formula simplification that was a NOOP. DAG size: 55 [2018-11-07 02:53:50,412 WARN L179 SmtUtils]: Spent 13.46 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-11-07 02:53:59,482 WARN L179 SmtUtils]: Spent 8.83 s on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2018-11-07 02:54:02,837 WARN L179 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2018-11-07 02:54:04,942 WARN L179 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2018-11-07 02:54:09,678 WARN L179 SmtUtils]: Spent 4.40 s on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2018-11-07 02:54:11,565 WARN L179 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-11-07 02:54:23,246 WARN L179 SmtUtils]: Spent 11.37 s on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-11-07 02:54:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:54:25,038 INFO L93 Difference]: Finished difference Result 5680 states and 8469 transitions. [2018-11-07 02:54:25,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 02:54:25,038 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 230 [2018-11-07 02:54:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:54:25,060 INFO L225 Difference]: With dead ends: 5680 [2018-11-07 02:54:25,061 INFO L226 Difference]: Without dead ends: 3893 [2018-11-07 02:54:25,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=736, Invalid=2234, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 02:54:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2018-11-07 02:54:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3784. [2018-11-07 02:54:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2018-11-07 02:54:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 4772 transitions. [2018-11-07 02:54:25,214 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 4772 transitions. Word has length 230 [2018-11-07 02:54:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:54:25,215 INFO L480 AbstractCegarLoop]: Abstraction has 3784 states and 4772 transitions. [2018-11-07 02:54:25,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 02:54:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 4772 transitions. [2018-11-07 02:54:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-07 02:54:25,224 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:54:25,225 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:54:25,225 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:54:25,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:54:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash -353802736, now seen corresponding path program 1 times [2018-11-07 02:54:25,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:54:25,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:54:25,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:54:25,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:54:25,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:54:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:54:25,496 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:54:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 131 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 02:54:25,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:54:25,576 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:54:25,576 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-11-07 02:54:25,577 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [542], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:54:25,579 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:54:25,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:54:26,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:54:37,381 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:54:37,381 INFO L272 AbstractInterpreter]: Visited 90 different actions 510 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:54:37,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:54:37,389 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:54:40,888 INFO L227 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 77.99% of their original sizes. [2018-11-07 02:54:40,889 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:54:54,423 INFO L415 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2018-11-07 02:54:54,423 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:54:54,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:54:54,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-07 02:54:54,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:54:54,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 02:54:54,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 02:54:54,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-11-07 02:54:54,426 INFO L87 Difference]: Start difference. First operand 3784 states and 4772 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 02:55:21,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 02:55:21,292 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:55:21,297 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:55:21,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:55:21 BoogieIcfgContainer [2018-11-07 02:55:21,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:55:21,299 INFO L168 Benchmark]: Toolchain (without parser) took 239912.70 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 02:55:21,300 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 02:55:21,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:21,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.86 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 682.6 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -770.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:21,302 INFO L168 Benchmark]: Boogie Preprocessor took 117.87 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:21,303 INFO L168 Benchmark]: RCFGBuilder took 3277.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 107.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:21,306 INFO L168 Benchmark]: TraceAbstraction took 235690.55 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -452.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 02:55:21,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 696.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 125.86 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 682.6 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -770.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.87 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3277.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 107.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235690.55 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -452.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (3784states) and FLOYD_HOARE automaton (currently 16 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (234 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 235.6s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 167.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1327 SDtfs, 7093 SDslu, 982 SDs, 0 SdLazy, 9938 SolverSat, 2434 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 57.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1327 GetRequests, 1187 SyntacticMatches, 29 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 101.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3784occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.8s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9952008644800405 AbsIntWeakeningRatio, 0.11403508771929824 AbsIntAvgWeakeningVarsNumRemoved, 35.05263157894737 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 333 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 1835 NumberOfCodeBlocks, 1835 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2196 ConstructedInterpolants, 2 QuantifiedInterpolants, 1564879 SizeOfPredicates, 5 NumberOfNonLiveVariables, 680 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 1121/1403 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown