java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:36:48,536 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:36:48,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:36:48,551 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:36:48,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:36:48,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:36:48,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:36:48,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:36:48,557 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:36:48,558 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:36:48,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:36:48,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:36:48,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:36:48,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:36:48,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:36:48,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:36:48,564 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:36:48,566 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:36:48,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:36:48,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:36:48,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:36:48,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:36:48,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:36:48,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:36:48,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:36:48,583 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:36:48,584 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:36:48,584 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:36:48,604 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:36:48,604 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:36:48,605 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:36:48,605 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:36:48,605 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:36:48,606 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:36:48,606 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:36:48,606 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:36:48,606 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:36:48,606 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:36:48,607 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:36:48,607 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:36:48,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:36:48,608 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:36:48,610 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:36:48,610 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:36:48,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:36:48,611 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:36:48,612 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:36:48,612 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:36:48,612 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:36:48,612 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:36:48,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:36:48,613 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:36:48,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:36:48,613 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:36:48,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:36:48,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:36:48,614 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:36:48,614 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:36:48,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:36:48,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:36:48,615 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:36:48,615 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:36:48,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:36:48,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:36:48,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:36:48,712 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:36:48,713 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:36:48,714 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c [2018-10-26 23:36:48,789 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/508cb458d/320f22e5b68147a0857260b2e77abc42/FLAG1b44bc236 [2018-10-26 23:36:49,544 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:36:49,545 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c [2018-10-26 23:36:49,582 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/508cb458d/320f22e5b68147a0857260b2e77abc42/FLAG1b44bc236 [2018-10-26 23:36:49,599 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/508cb458d/320f22e5b68147a0857260b2e77abc42 [2018-10-26 23:36:49,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:36:49,614 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:36:49,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:36:49,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:36:49,619 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:36:49,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:49" (1/1) ... [2018-10-26 23:36:49,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:49, skipping insertion in model container [2018-10-26 23:36:49,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:49" (1/1) ... [2018-10-26 23:36:49,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:36:49,814 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:36:51,099 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:36:51,105 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:36:51,796 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:36:51,830 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:36:51,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51 WrapperNode [2018-10-26 23:36:51,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:36:51,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:36:51,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:36:51,832 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:36:51,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:51,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:36:52,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:36:52,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:36:52,357 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:36:52,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... [2018-10-26 23:36:52,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:36:52,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:36:52,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:36:52,653 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:36:52,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:36:52,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:36:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:36:52,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-26 23:36:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-26 23:36:52,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-26 23:36:52,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-26 23:36:52,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-26 23:36:52,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-26 23:36:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:36:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:36:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:36:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:36:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:36:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:37:03,658 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:37:03,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:37:03 BoogieIcfgContainer [2018-10-26 23:37:03,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:37:03,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:37:03,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:37:03,663 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:37:03,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:36:49" (1/3) ... [2018-10-26 23:37:03,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:37:03, skipping insertion in model container [2018-10-26 23:37:03,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:51" (2/3) ... [2018-10-26 23:37:03,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:37:03, skipping insertion in model container [2018-10-26 23:37:03,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:37:03" (3/3) ... [2018-10-26 23:37:03,667 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label03_false-unreach-call.c [2018-10-26 23:37:03,677 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:37:03,688 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:37:03,707 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:37:03,754 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:37:03,754 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:37:03,754 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:37:03,754 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:37:03,755 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:37:03,755 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:37:03,755 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:37:03,755 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:37:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-26 23:37:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 23:37:03,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:37:03,807 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] [2018-10-26 23:37:03,812 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:37:03,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:37:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash -2126860428, now seen corresponding path program 1 times [2018-10-26 23:37:03,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:37:03,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:03,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:37:03,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:03,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:37:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:37:04,194 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:37:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:37:04,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:37:04,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:37:04,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:37:04,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:37:04,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:37:04,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:37:04,328 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-26 23:37:16,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:37:16,292 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-26 23:37:16,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:37:16,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-26 23:37:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:37:16,334 INFO L225 Difference]: With dead ends: 2446 [2018-10-26 23:37:16,335 INFO L226 Difference]: Without dead ends: 1604 [2018-10-26 23:37:16,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:37:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-26 23:37:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-26 23:37:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-26 23:37:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-26 23:37:16,505 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 26 [2018-10-26 23:37:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:37:16,506 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-26 23:37:16,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:37:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-26 23:37:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 23:37:16,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:37:16,513 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:37:16,513 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:37:16,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:37:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2008600922, now seen corresponding path program 1 times [2018-10-26 23:37:16,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:37:16,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:16,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:37:16,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:16,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:37:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:37:16,903 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:37:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:37:16,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:37:16,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:37:16,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:37:16,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:37:16,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:37:16,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:37:16,955 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-26 23:37:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:37:31,273 INFO L93 Difference]: Finished difference Result 4816 states and 9003 transitions. [2018-10-26 23:37:31,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:37:31,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-10-26 23:37:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:37:31,300 INFO L225 Difference]: With dead ends: 4816 [2018-10-26 23:37:31,300 INFO L226 Difference]: Without dead ends: 3218 [2018-10-26 23:37:31,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:37:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-26 23:37:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3191. [2018-10-26 23:37:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2018-10-26 23:37:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 5695 transitions. [2018-10-26 23:37:31,425 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 5695 transitions. Word has length 100 [2018-10-26 23:37:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:37:31,426 INFO L481 AbstractCegarLoop]: Abstraction has 3191 states and 5695 transitions. [2018-10-26 23:37:31,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:37:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 5695 transitions. [2018-10-26 23:37:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-26 23:37:31,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:37:31,431 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:37:31,432 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:37:31,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:37:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1895786230, now seen corresponding path program 1 times [2018-10-26 23:37:31,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:37:31,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:31,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:37:31,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:31,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:37:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:37:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:37:31,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:37:31,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:37:31,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:37:31,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:37:31,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:37:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:37:31,593 INFO L87 Difference]: Start difference. First operand 3191 states and 5695 transitions. Second operand 4 states. [2018-10-26 23:37:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:37:39,826 INFO L93 Difference]: Finished difference Result 11055 states and 19922 transitions. [2018-10-26 23:37:39,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:37:39,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-10-26 23:37:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:37:39,880 INFO L225 Difference]: With dead ends: 11055 [2018-10-26 23:37:39,880 INFO L226 Difference]: Without dead ends: 7870 [2018-10-26 23:37:39,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:37:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7870 states. [2018-10-26 23:37:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7870 to 7870. [2018-10-26 23:37:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7870 states. [2018-10-26 23:37:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7870 states to 7870 states and 13357 transitions. [2018-10-26 23:37:40,113 INFO L78 Accepts]: Start accepts. Automaton has 7870 states and 13357 transitions. Word has length 102 [2018-10-26 23:37:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:37:40,114 INFO L481 AbstractCegarLoop]: Abstraction has 7870 states and 13357 transitions. [2018-10-26 23:37:40,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:37:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 7870 states and 13357 transitions. [2018-10-26 23:37:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-26 23:37:40,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:37:40,123 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:37:40,123 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:37:40,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:37:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash 319455283, now seen corresponding path program 1 times [2018-10-26 23:37:40,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:37:40,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:40,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:37:40,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:40,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:37:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:37:40,427 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:37:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:37:40,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:37:40,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:37:40,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:37:40,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:37:40,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:37:40,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:37:40,616 INFO L87 Difference]: Start difference. First operand 7870 states and 13357 transitions. Second operand 6 states. [2018-10-26 23:37:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:37:53,254 INFO L93 Difference]: Finished difference Result 27532 states and 48321 transitions. [2018-10-26 23:37:53,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:37:53,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-26 23:37:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:37:53,391 INFO L225 Difference]: With dead ends: 27532 [2018-10-26 23:37:53,391 INFO L226 Difference]: Without dead ends: 19668 [2018-10-26 23:37:53,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:37:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19668 states. [2018-10-26 23:37:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19668 to 19554. [2018-10-26 23:37:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19554 states. [2018-10-26 23:37:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19554 states to 19554 states and 30232 transitions. [2018-10-26 23:37:54,114 INFO L78 Accepts]: Start accepts. Automaton has 19554 states and 30232 transitions. Word has length 129 [2018-10-26 23:37:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:37:54,115 INFO L481 AbstractCegarLoop]: Abstraction has 19554 states and 30232 transitions. [2018-10-26 23:37:54,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:37:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 19554 states and 30232 transitions. [2018-10-26 23:37:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-26 23:37:54,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:37:54,142 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:37:54,143 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:37:54,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:37:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash 466600808, now seen corresponding path program 1 times [2018-10-26 23:37:54,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:37:54,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:54,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:37:54,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:37:54,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:37:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:37:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 23:37:54,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:37:54,909 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:37:54,910 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-26 23:37:54,914 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1975], [1977], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-26 23:37:55,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:37:55,017 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:38:05,319 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:38:05,321 INFO L272 AbstractInterpreter]: Visited 156 different actions 305 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-26 23:38:05,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:38:05,338 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:38:09,454 INFO L227 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 75.5% of their original sizes. [2018-10-26 23:38:09,454 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:38:25,674 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-10-26 23:38:25,675 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:38:25,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:38:25,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-26 23:38:25,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:38:25,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-26 23:38:25,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-26 23:38:25,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2018-10-26 23:38:25,678 INFO L87 Difference]: Start difference. First operand 19554 states and 30232 transitions. Second operand 22 states. [2018-10-26 23:39:05,805 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-26 23:40:45,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 23:40:45,284 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:40:45,290 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:40:45,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:40:45 BoogieIcfgContainer [2018-10-26 23:40:45,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:40:45,292 INFO L168 Benchmark]: Toolchain (without parser) took 235679.32 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -650.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 23:40:45,293 INFO L168 Benchmark]: CDTParser took 0.54 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. [2018-10-26 23:40:45,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2216.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:45,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 524.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:45,298 INFO L168 Benchmark]: Boogie Preprocessor took 296.43 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: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:45,299 INFO L168 Benchmark]: RCFGBuilder took 11005.65 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 181.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -210.6 MB). Peak memory consumption was 665.9 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:45,300 INFO L168 Benchmark]: TraceAbstraction took 221631.22 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 343.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-26 23:40:45,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 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 2216.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 524.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 296.43 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: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11005.65 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 181.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -210.6 MB). Peak memory consumption was 665.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221631.22 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 343.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (19554states) and FLOYD_HOARE automaton (currently 18 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (3176 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 221.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 187.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1997 SDtfs, 12851 SDslu, 474 SDs, 0 SdLazy, 18252 SolverSat, 5236 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 106.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 286 GetRequests, 235 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19554occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9954772937905467 AbsIntWeakeningRatio, 0.10843373493975904 AbsIntAvgWeakeningVarsNumRemoved, 652.4176706827309 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 141 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 607 NumberOfCodeBlocks, 607 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 602 ConstructedInterpolants, 0 QuantifiedInterpolants, 463930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 104/171 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown