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/Problem15_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:26:09,633 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:26:09,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:26:09,654 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:26:09,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:26:09,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:26:09,657 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:26:09,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:26:09,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:26:09,663 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:26:09,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:26:09,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:26:09,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:26:09,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:26:09,669 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:26:09,672 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:26:09,673 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:26:09,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:26:09,680 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:26:09,682 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:26:09,683 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:26:09,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:26:09,689 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:26:09,700 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 00:26:09,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:26:09,715 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:26:09,716 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:26:09,716 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:26:09,717 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:26:09,717 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:26:09,717 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:26:09,717 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:26:09,717 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:26:09,718 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:26:09,718 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:26:09,718 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:26:09,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:26:09,719 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:26:09,719 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:26:09,719 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:26:09,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:26:09,720 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:26:09,720 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:26:09,720 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:26:09,720 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:26:09,720 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:26:09,721 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:26:09,721 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:26:09,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:26:09,721 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:26:09,721 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:26:09,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:26:09,722 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:26:09,722 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:26:09,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:26:09,722 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:26:09,723 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:26:09,723 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:26:09,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:26:09,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:26:09,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:26:09,801 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:26:09,802 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:26:09,803 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c [2018-11-07 00:26:09,863 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66632d4a/415ef35fb15d4312bd42741fc1756754/FLAGaa2ffbb9e [2018-11-07 00:26:10,534 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:26:10,537 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c [2018-11-07 00:26:10,557 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66632d4a/415ef35fb15d4312bd42741fc1756754/FLAGaa2ffbb9e [2018-11-07 00:26:10,573 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66632d4a/415ef35fb15d4312bd42741fc1756754 [2018-11-07 00:26:10,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:26:10,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:26:10,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:26:10,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:26:10,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:26:10,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:26:10" (1/1) ... [2018-11-07 00:26:10,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a881964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:10, skipping insertion in model container [2018-11-07 00:26:10,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:26:10" (1/1) ... [2018-11-07 00:26:10,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:26:10,702 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:26:11,666 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:26:11,671 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:26:12,035 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:26:12,055 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:26:12,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12 WrapperNode [2018-11-07 00:26:12,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:26:12,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:26:12,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:26:12,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:26:12,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:26:12,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:26:12,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:26:12,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:26:12,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (1/1) ... [2018-11-07 00:26:12,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:26:12,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:26:12,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:26:12,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:26:12,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (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 00:26:12,539 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:26:12,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:26:12,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:26:12,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:26:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:26:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:26:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:26:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:26:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:26:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:26:12,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:26:18,470 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:26:18,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:26:18 BoogieIcfgContainer [2018-11-07 00:26:18,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:26:18,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:26:18,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:26:18,476 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:26:18,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:26:10" (1/3) ... [2018-11-07 00:26:18,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28de72c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:26:18, skipping insertion in model container [2018-11-07 00:26:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:26:12" (2/3) ... [2018-11-07 00:26:18,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28de72c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:26:18, skipping insertion in model container [2018-11-07 00:26:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:26:18" (3/3) ... [2018-11-07 00:26:18,480 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label37_false-unreach-call.c [2018-11-07 00:26:18,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:26:18,502 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:26:18,520 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:26:18,566 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:26:18,566 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:26:18,566 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:26:18,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:26:18,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:26:18,567 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:26:18,567 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:26:18,567 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:26:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 00:26:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 00:26:18,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:26:18,621 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] [2018-11-07 00:26:18,623 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:26:18,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:26:18,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1604486473, now seen corresponding path program 1 times [2018-11-07 00:26:18,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:26:18,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:18,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:26:18,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:18,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:26:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:26:19,087 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 00:26:19,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:26:19,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:26:19,091 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:26:19,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:26:19,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:26:19,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:26:19,114 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 00:26:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:26:22,579 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-11-07 00:26:22,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:26:22,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-07 00:26:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:26:22,604 INFO L225 Difference]: With dead ends: 1193 [2018-11-07 00:26:22,604 INFO L226 Difference]: Without dead ends: 753 [2018-11-07 00:26:22,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:26:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-11-07 00:26:22,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-11-07 00:26:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-11-07 00:26:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-11-07 00:26:22,729 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 27 [2018-11-07 00:26:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:26:22,730 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-11-07 00:26:22,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:26:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-11-07 00:26:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-07 00:26:22,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:26:22,741 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:26:22,741 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:26:22,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:26:22,742 INFO L82 PathProgramCache]: Analyzing trace with hash 539845592, now seen corresponding path program 1 times [2018-11-07 00:26:22,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:26:22,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:22,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:26:22,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:22,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:26:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:26:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:26:23,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:26:23,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:26:23,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:26:23,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:26:23,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:26:23,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:26:23,172 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-11-07 00:26:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:26:32,385 INFO L93 Difference]: Finished difference Result 2819 states and 5076 transitions. [2018-11-07 00:26:32,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:26:32,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-11-07 00:26:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:26:32,401 INFO L225 Difference]: With dead ends: 2819 [2018-11-07 00:26:32,402 INFO L226 Difference]: Without dead ends: 2072 [2018-11-07 00:26:32,409 INFO L604 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 [2018-11-07 00:26:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2018-11-07 00:26:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2046. [2018-11-07 00:26:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2018-11-07 00:26:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3209 transitions. [2018-11-07 00:26:32,497 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3209 transitions. Word has length 107 [2018-11-07 00:26:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:26:32,498 INFO L480 AbstractCegarLoop]: Abstraction has 2046 states and 3209 transitions. [2018-11-07 00:26:32,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:26:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3209 transitions. [2018-11-07 00:26:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 00:26:32,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:26:32,510 INFO L375 BasicCegarLoop]: trace histogram [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 00:26:32,510 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:26:32,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:26:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1140571872, now seen corresponding path program 1 times [2018-11-07 00:26:32,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:26:32,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:32,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:26:32,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:32,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:26:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:26:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:26:33,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:26:33,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:26:33,037 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:26:33,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:26:33,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:26:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:26:33,038 INFO L87 Difference]: Start difference. First operand 2046 states and 3209 transitions. Second operand 6 states. [2018-11-07 00:26:39,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:26:39,453 INFO L93 Difference]: Finished difference Result 6256 states and 10254 transitions. [2018-11-07 00:26:39,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:26:39,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 00:26:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:26:39,494 INFO L225 Difference]: With dead ends: 6256 [2018-11-07 00:26:39,494 INFO L226 Difference]: Without dead ends: 4216 [2018-11-07 00:26:39,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:26:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2018-11-07 00:26:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4159. [2018-11-07 00:26:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2018-11-07 00:26:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 6091 transitions. [2018-11-07 00:26:39,627 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 6091 transitions. Word has length 111 [2018-11-07 00:26:39,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:26:39,628 INFO L480 AbstractCegarLoop]: Abstraction has 4159 states and 6091 transitions. [2018-11-07 00:26:39,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:26:39,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 6091 transitions. [2018-11-07 00:26:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 00:26:39,633 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:26:39,634 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:26:39,634 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:26:39,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:26:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -142723084, now seen corresponding path program 1 times [2018-11-07 00:26:39,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:26:39,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:39,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:26:39,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:26:39,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:26:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:26:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 41 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 00:26:39,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:26:39,906 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:26:39,907 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-11-07 00:26:39,909 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:26:39,993 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:26:39,993 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:26:41,962 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:26:42,547 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:26:42,549 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:26:42,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:26:42,583 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:26:44,320 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-07 00:26:44,321 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:26:44,622 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-11-07 00:26:44,622 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:26:44,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:26:44,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:26:44,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:26:44,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:26:44,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:26:44,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:26:44,625 INFO L87 Difference]: Start difference. First operand 4159 states and 6091 transitions. Second operand 7 states. [2018-11-07 00:27:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:27:57,114 INFO L93 Difference]: Finished difference Result 8622 states and 12530 transitions. [2018-11-07 00:27:57,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:27:57,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2018-11-07 00:27:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:27:57,134 INFO L225 Difference]: With dead ends: 8622 [2018-11-07 00:27:57,134 INFO L226 Difference]: Without dead ends: 4469 [2018-11-07 00:27:57,145 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:27:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2018-11-07 00:27:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4467. [2018-11-07 00:27:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4467 states. [2018-11-07 00:27:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6407 transitions. [2018-11-07 00:27:57,255 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6407 transitions. Word has length 181 [2018-11-07 00:27:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:27:57,256 INFO L480 AbstractCegarLoop]: Abstraction has 4467 states and 6407 transitions. [2018-11-07 00:27:57,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:27:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6407 transitions. [2018-11-07 00:27:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 00:27:57,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:27:57,260 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:27:57,260 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:27:57,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:27:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1466713142, now seen corresponding path program 1 times [2018-11-07 00:27:57,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:27:57,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:27:57,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:27:57,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:27:57,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:27:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:27:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 41 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 00:27:57,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:27:57,515 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:27:57,516 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-11-07 00:27:57,516 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:27:57,522 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:27:57,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:27:58,332 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:28:04,846 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:28:04,846 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 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 00:28:04,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:28:04,856 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:28:07,648 INFO L227 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 78.63% of their original sizes. [2018-11-07 00:28:07,648 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:29:48,964 INFO L415 sIntCurrentIteration]: We unified 206 AI predicates to 206 [2018-11-07 00:29:48,965 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:29:48,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:29:48,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 00:29:48,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:48,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 00:29:48,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 00:29:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-07 00:29:48,967 INFO L87 Difference]: Start difference. First operand 4467 states and 6407 transitions. Second operand 15 states. Received shutdown request... [2018-11-07 00:30:14,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:30:14,444 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:30:14,450 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:30:14,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:30:14 BoogieIcfgContainer [2018-11-07 00:30:14,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:30:14,451 INFO L168 Benchmark]: Toolchain (without parser) took 243866.62 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:30:14,454 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-07 00:30:14,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1469.63 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:30:14,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 253.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:30:14,456 INFO L168 Benchmark]: Boogie Preprocessor took 152.45 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:30:14,457 INFO L168 Benchmark]: RCFGBuilder took 6006.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.3 MB). Peak memory consumption was 292.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:30:14,458 INFO L168 Benchmark]: TraceAbstraction took 235978.25 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -525.0 MB). Peak memory consumption was 871.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:30:14,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1469.63 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 253.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.45 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6006.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.3 MB). Peak memory consumption was 292.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235978.25 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -525.0 MB). Peak memory consumption was 871.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was constructing difference of abstraction (4467states) and FLOYD_HOARE automaton (currently 9 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (91 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 235.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 117.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 997 SDtfs, 4435 SDslu, 989 SDs, 0 SdLazy, 9187 SolverSat, 1687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 417 GetRequests, 240 SyntacticMatches, 139 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 102.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4467occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9943305549297888 AbsIntWeakeningRatio, 0.13471502590673576 AbsIntAvgWeakeningVarsNumRemoved, 474.9119170984456 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 85 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 633 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 506068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 134/274 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown