java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:01:22,550 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:01:22,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:01:22,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:01:22,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:01:22,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:01:22,566 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:01:22,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:01:22,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:01:22,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:01:22,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:01:22,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:01:22,576 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:01:22,577 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:01:22,579 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:01:22,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:01:22,580 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:01:22,583 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:01:22,585 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:01:22,589 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:01:22,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:01:22,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:01:22,597 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 11:01:22,613 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:01:22,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:01:22,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:01:22,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:01:22,639 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:01:22,640 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:01:22,640 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:01:22,640 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:01:22,640 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:01:22,640 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:01:22,641 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:01:22,641 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:01:22,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:01:22,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:01:22,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:01:22,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:01:22,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:01:22,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:01:22,643 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:01:22,643 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:01:22,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:01:22,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:01:22,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:01:22,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:01:22,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:01:22,644 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:01:22,644 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:01:22,644 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:01:22,645 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:01:22,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:01:22,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:01:22,645 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:01:22,645 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:01:22,646 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:01:22,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:01:22,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:01:22,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:01:22,741 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:01:22,742 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:01:22,742 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label27_false-unreach-call.c [2018-07-24 11:01:23,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3cee291/2ef0645eb1454198b70e973b732007f4/FLAGbf809d4e4 [2018-07-24 11:01:23,460 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:01:23,461 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label27_false-unreach-call.c [2018-07-24 11:01:23,491 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3cee291/2ef0645eb1454198b70e973b732007f4/FLAGbf809d4e4 [2018-07-24 11:01:23,509 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3cee291/2ef0645eb1454198b70e973b732007f4 [2018-07-24 11:01:23,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:01:23,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:01:23,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:23,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:01:23,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:01:23,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:23" (1/1) ... [2018-07-24 11:01:23,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e46634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:23, skipping insertion in model container [2018-07-24 11:01:23,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:23" (1/1) ... [2018-07-24 11:01:23,776 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:01:24,324 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:24,346 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:01:24,636 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:24,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24 WrapperNode [2018-07-24 11:01:24,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:24,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:24,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:01:24,707 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:01:24,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:24,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:24,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:24,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:01:24,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:01:24,837 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:01:24,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:24,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:24,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:24,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:25,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:25,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:25,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (1/1) ... [2018-07-24 11:01:25,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:01:25,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:01:25,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:01:25,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:01:25,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (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 [2018-07-24 11:01:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:01:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:01:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:01:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:01:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:01:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:01:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:01:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:01:30,466 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:01:30,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:30 BoogieIcfgContainer [2018-07-24 11:01:30,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:01:30,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:01:30,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:01:30,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:01:30,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:01:23" (1/3) ... [2018-07-24 11:01:30,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336e4fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:30, skipping insertion in model container [2018-07-24 11:01:30,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:24" (2/3) ... [2018-07-24 11:01:30,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336e4fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:30, skipping insertion in model container [2018-07-24 11:01:30,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:30" (3/3) ... [2018-07-24 11:01:30,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label27_false-unreach-call.c [2018-07-24 11:01:30,486 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:01:30,494 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:01:30,546 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:01:30,547 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:01:30,547 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:01:30,547 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:01:30,547 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:01:30,548 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:01:30,548 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:01:30,548 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:01:30,548 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:01:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 11:01:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-24 11:01:30,600 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:30,602 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:30,602 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1545463543, now seen corresponding path program 1 times [2018-07-24 11:01:30,610 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:30,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:30,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:30,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:30,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:31,452 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:01:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:31,597 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:31,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:01:31,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:31,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:31,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:31,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:31,622 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-07-24 11:01:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:33,642 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-07-24 11:01:33,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:33,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2018-07-24 11:01:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:33,668 INFO L225 Difference]: With dead ends: 855 [2018-07-24 11:01:33,668 INFO L226 Difference]: Without dead ends: 541 [2018-07-24 11:01:33,676 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-07-24 11:01:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-07-24 11:01:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-07-24 11:01:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-07-24 11:01:33,772 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 160 [2018-07-24 11:01:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:33,773 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-07-24 11:01:33,773 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-07-24 11:01:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-24 11:01:33,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:33,781 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:33,781 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:33,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1783795856, now seen corresponding path program 1 times [2018-07-24 11:01:33,782 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:33,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:33,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:33,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:33,784 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:34,141 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:34,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:01:34,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:34,144 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:01:34,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:01:34,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:01:34,145 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-07-24 11:01:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:38,415 INFO L93 Difference]: Finished difference Result 1632 states and 2917 transitions. [2018-07-24 11:01:38,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:01:38,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-07-24 11:01:38,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:38,431 INFO L225 Difference]: With dead ends: 1632 [2018-07-24 11:01:38,431 INFO L226 Difference]: Without dead ends: 1111 [2018-07-24 11:01:38,442 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:01:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2018-07-24 11:01:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1054. [2018-07-24 11:01:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2018-07-24 11:01:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1721 transitions. [2018-07-24 11:01:38,544 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1721 transitions. Word has length 170 [2018-07-24 11:01:38,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:38,545 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1721 transitions. [2018-07-24 11:01:38,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:01:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1721 transitions. [2018-07-24 11:01:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-24 11:01:38,550 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:38,550 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:38,550 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2052483931, now seen corresponding path program 1 times [2018-07-24 11:01:38,551 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:38,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:38,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:38,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:38,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:38,856 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:38,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:01:38,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:38,857 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:38,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:38,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:38,857 INFO L87 Difference]: Start difference. First operand 1054 states and 1721 transitions. Second operand 3 states. [2018-07-24 11:01:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:41,423 INFO L93 Difference]: Finished difference Result 3005 states and 5052 transitions. [2018-07-24 11:01:41,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:41,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2018-07-24 11:01:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:41,443 INFO L225 Difference]: With dead ends: 3005 [2018-07-24 11:01:41,443 INFO L226 Difference]: Without dead ends: 1957 [2018-07-24 11:01:41,449 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2018-07-24 11:01:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1956. [2018-07-24 11:01:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2018-07-24 11:01:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 3038 transitions. [2018-07-24 11:01:41,519 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 3038 transitions. Word has length 173 [2018-07-24 11:01:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:41,520 INFO L471 AbstractCegarLoop]: Abstraction has 1956 states and 3038 transitions. [2018-07-24 11:01:41,520 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 3038 transitions. [2018-07-24 11:01:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-24 11:01:41,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:41,530 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:41,530 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash 555172737, now seen corresponding path program 1 times [2018-07-24 11:01:41,530 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:41,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:41,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:41,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:41,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:41,827 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:41,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:01:41,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:41,828 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:41,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:41,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:41,828 INFO L87 Difference]: Start difference. First operand 1956 states and 3038 transitions. Second operand 3 states. [2018-07-24 11:01:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:43,794 INFO L93 Difference]: Finished difference Result 5693 states and 9159 transitions. [2018-07-24 11:01:43,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:43,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-07-24 11:01:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:43,822 INFO L225 Difference]: With dead ends: 5693 [2018-07-24 11:01:43,823 INFO L226 Difference]: Without dead ends: 3743 [2018-07-24 11:01:43,834 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2018-07-24 11:01:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3736. [2018-07-24 11:01:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3736 states. [2018-07-24 11:01:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5694 transitions. [2018-07-24 11:01:43,951 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5694 transitions. Word has length 175 [2018-07-24 11:01:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:43,952 INFO L471 AbstractCegarLoop]: Abstraction has 3736 states and 5694 transitions. [2018-07-24 11:01:43,952 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5694 transitions. [2018-07-24 11:01:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-24 11:01:43,964 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:43,964 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:43,964 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:43,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2123485812, now seen corresponding path program 1 times [2018-07-24 11:01:43,965 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:43,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:43,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:43,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:43,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:44,258 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:01:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:44,428 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:01:44,428 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:01:44,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:44,446 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:01:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:44,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:01:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:45,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:01:45,368 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:01:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:46,103 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:01:46,103 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:01:46,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:46,120 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:01:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:46,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:01:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:46,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:01:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:46,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:01:46,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-07-24 11:01:46,810 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:01:46,811 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 11:01:46,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 11:01:46,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:01:46,812 INFO L87 Difference]: Start difference. First operand 3736 states and 5694 transitions. Second operand 8 states. [2018-07-24 11:01:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:52,607 INFO L93 Difference]: Finished difference Result 14684 states and 26396 transitions. [2018-07-24 11:01:52,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:01:52,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2018-07-24 11:01:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:52,697 INFO L225 Difference]: With dead ends: 14684 [2018-07-24 11:01:52,698 INFO L226 Difference]: Without dead ends: 10954 [2018-07-24 11:01:52,739 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 728 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:01:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10954 states. [2018-07-24 11:01:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10954 to 10655. [2018-07-24 11:01:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10655 states. [2018-07-24 11:01:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10655 states to 10655 states and 15825 transitions. [2018-07-24 11:01:53,204 INFO L78 Accepts]: Start accepts. Automaton has 10655 states and 15825 transitions. Word has length 184 [2018-07-24 11:01:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:53,204 INFO L471 AbstractCegarLoop]: Abstraction has 10655 states and 15825 transitions. [2018-07-24 11:01:53,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 11:01:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 10655 states and 15825 transitions. [2018-07-24 11:01:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-24 11:01:53,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:53,232 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:53,233 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:53,233 INFO L82 PathProgramCache]: Analyzing trace with hash -313397514, now seen corresponding path program 1 times [2018-07-24 11:01:53,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:53,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:53,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:53,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:53,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:53,577 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:53,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:01:53,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:53,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:53,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:53,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:53,579 INFO L87 Difference]: Start difference. First operand 10655 states and 15825 transitions. Second operand 3 states. [2018-07-24 11:01:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:57,006 INFO L93 Difference]: Finished difference Result 25720 states and 38724 transitions. [2018-07-24 11:01:57,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:57,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-07-24 11:01:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:57,095 INFO L225 Difference]: With dead ends: 25720 [2018-07-24 11:01:57,095 INFO L226 Difference]: Without dead ends: 15071 [2018-07-24 11:01:57,149 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15071 states. [2018-07-24 11:01:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15071 to 14712. [2018-07-24 11:01:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14712 states. [2018-07-24 11:01:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14712 states to 14712 states and 21568 transitions. [2018-07-24 11:01:57,572 INFO L78 Accepts]: Start accepts. Automaton has 14712 states and 21568 transitions. Word has length 193 [2018-07-24 11:01:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:57,572 INFO L471 AbstractCegarLoop]: Abstraction has 14712 states and 21568 transitions. [2018-07-24 11:01:57,572 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14712 states and 21568 transitions. [2018-07-24 11:01:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 11:01:57,623 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:57,623 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:57,624 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:57,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1251666220, now seen corresponding path program 1 times [2018-07-24 11:01:57,624 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:57,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:57,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:57,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:57,625 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:57,892 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:01:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:58,281 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:58,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:01:58,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:58,282 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:01:58,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:01:58,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:01:58,282 INFO L87 Difference]: Start difference. First operand 14712 states and 21568 transitions. Second operand 6 states. [2018-07-24 11:02:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:01,476 INFO L93 Difference]: Finished difference Result 30261 states and 46415 transitions. [2018-07-24 11:02:01,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:02:01,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-07-24 11:02:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:01,544 INFO L225 Difference]: With dead ends: 30261 [2018-07-24 11:02:01,544 INFO L226 Difference]: Without dead ends: 15555 [2018-07-24 11:02:01,580 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:02:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15555 states. [2018-07-24 11:02:01,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15555 to 15298. [2018-07-24 11:02:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15298 states. [2018-07-24 11:02:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 20562 transitions. [2018-07-24 11:02:01,944 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 20562 transitions. Word has length 204 [2018-07-24 11:02:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:01,944 INFO L471 AbstractCegarLoop]: Abstraction has 15298 states and 20562 transitions. [2018-07-24 11:02:01,944 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 20562 transitions. [2018-07-24 11:02:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-24 11:02:01,992 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:01,992 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:01,992 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:01,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1347787861, now seen corresponding path program 1 times [2018-07-24 11:02:01,993 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:01,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:01,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:01,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:01,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 92 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 11:02:02,496 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:02,496 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:02,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:02,515 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:02,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 11:02:02,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 100 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 11:02:03,299 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:03,300 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:03,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:03,328 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:03,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 11:02:04,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:04,529 WARN L169 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 11:02:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 100 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 11:02:04,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:04,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 11:02:04,677 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:04,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:02:04,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:02:04,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:02:04,679 INFO L87 Difference]: Start difference. First operand 15298 states and 20562 transitions. Second operand 9 states. [2018-07-24 11:02:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:10,087 INFO L93 Difference]: Finished difference Result 55175 states and 78687 transitions. [2018-07-24 11:02:10,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:02:10,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2018-07-24 11:02:10,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:10,232 INFO L225 Difference]: With dead ends: 55175 [2018-07-24 11:02:10,232 INFO L226 Difference]: Without dead ends: 39883 [2018-07-24 11:02:10,278 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 981 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-07-24 11:02:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39883 states. [2018-07-24 11:02:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39883 to 39595. [2018-07-24 11:02:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39595 states. [2018-07-24 11:02:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39595 states to 39595 states and 52098 transitions. [2018-07-24 11:02:11,153 INFO L78 Accepts]: Start accepts. Automaton has 39595 states and 52098 transitions. Word has length 247 [2018-07-24 11:02:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:11,153 INFO L471 AbstractCegarLoop]: Abstraction has 39595 states and 52098 transitions. [2018-07-24 11:02:11,153 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:02:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 39595 states and 52098 transitions. [2018-07-24 11:02:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 11:02:11,230 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:11,231 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:11,231 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:11,231 INFO L82 PathProgramCache]: Analyzing trace with hash -918816557, now seen corresponding path program 1 times [2018-07-24 11:02:11,231 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:11,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:11,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:11,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:11,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-07-24 11:02:11,602 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:11,602 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:11,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:11,616 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:12,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 11:02:12,759 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 114 proven. 37 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 11:02:13,127 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:13,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 11 [2018-07-24 11:02:13,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:13,128 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:02:13,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:02:13,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:02:13,129 INFO L87 Difference]: Start difference. First operand 39595 states and 52098 transitions. Second operand 6 states. [2018-07-24 11:02:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:15,819 INFO L93 Difference]: Finished difference Result 81296 states and 110543 transitions. [2018-07-24 11:02:15,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:02:15,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 287 [2018-07-24 11:02:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:16,009 INFO L225 Difference]: With dead ends: 81296 [2018-07-24 11:02:16,009 INFO L226 Difference]: Without dead ends: 41707 [2018-07-24 11:02:16,104 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 566 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:02:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41707 states. [2018-07-24 11:02:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41707 to 40629. [2018-07-24 11:02:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40629 states. [2018-07-24 11:02:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40629 states to 40629 states and 53205 transitions. [2018-07-24 11:02:17,217 INFO L78 Accepts]: Start accepts. Automaton has 40629 states and 53205 transitions. Word has length 287 [2018-07-24 11:02:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:17,218 INFO L471 AbstractCegarLoop]: Abstraction has 40629 states and 53205 transitions. [2018-07-24 11:02:17,218 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 40629 states and 53205 transitions. [2018-07-24 11:02:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-24 11:02:17,297 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:17,297 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:17,297 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:17,298 INFO L82 PathProgramCache]: Analyzing trace with hash -659989414, now seen corresponding path program 1 times [2018-07-24 11:02:17,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:17,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:17,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:17,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:17,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:17,997 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:17,998 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:18,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:18,005 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:18,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:18,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:18,473 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:18,473 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:18,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:18,488 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:19,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:19,233 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:19,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:19,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 11:02:19,353 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:19,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:02:19,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:02:19,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:02:19,355 INFO L87 Difference]: Start difference. First operand 40629 states and 53205 transitions. Second operand 9 states. [2018-07-24 11:02:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:24,428 INFO L93 Difference]: Finished difference Result 94354 states and 131803 transitions. [2018-07-24 11:02:24,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-24 11:02:24,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2018-07-24 11:02:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:24,724 INFO L225 Difference]: With dead ends: 94354 [2018-07-24 11:02:24,724 INFO L226 Difference]: Without dead ends: 53731 [2018-07-24 11:02:24,833 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1182 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2018-07-24 11:02:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53731 states. [2018-07-24 11:02:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53731 to 52778. [2018-07-24 11:02:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52778 states. [2018-07-24 11:02:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52778 states to 52778 states and 65814 transitions. [2018-07-24 11:02:26,016 INFO L78 Accepts]: Start accepts. Automaton has 52778 states and 65814 transitions. Word has length 297 [2018-07-24 11:02:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:26,017 INFO L471 AbstractCegarLoop]: Abstraction has 52778 states and 65814 transitions. [2018-07-24 11:02:26,017 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:02:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 52778 states and 65814 transitions. [2018-07-24 11:02:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-24 11:02:26,092 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:26,093 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:26,093 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1890864329, now seen corresponding path program 1 times [2018-07-24 11:02:26,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:26,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:26,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:26,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:26,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 231 proven. 62 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-07-24 11:02:26,480 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:26,480 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:26,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:26,493 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:26,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 11:02:26,932 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 236 proven. 31 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 11:02:27,433 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:27,433 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:27,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:27,451 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:28,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 11:02:29,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 236 proven. 31 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 11:02:29,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:29,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 21 [2018-07-24 11:02:29,325 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:29,326 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 11:02:29,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 11:02:29,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2018-07-24 11:02:29,327 INFO L87 Difference]: Start difference. First operand 52778 states and 65814 transitions. Second operand 13 states. [2018-07-24 11:03:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:01,909 INFO L93 Difference]: Finished difference Result 519283 states and 780640 transitions. [2018-07-24 11:03:01,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-24 11:03:01,910 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 348 [2018-07-24 11:03:01,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:04,592 INFO L225 Difference]: With dead ends: 519283 [2018-07-24 11:03:04,592 INFO L226 Difference]: Without dead ends: 466511 [2018-07-24 11:03:04,970 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1598 GetRequests, 1465 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7007 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2426, Invalid=15396, Unknown=0, NotChecked=0, Total=17822 [2018-07-24 11:03:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466511 states. [2018-07-24 11:03:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466511 to 451667. [2018-07-24 11:03:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451667 states. [2018-07-24 11:03:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451667 states to 451667 states and 609126 transitions. [2018-07-24 11:03:32,191 INFO L78 Accepts]: Start accepts. Automaton has 451667 states and 609126 transitions. Word has length 348 [2018-07-24 11:03:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:32,191 INFO L471 AbstractCegarLoop]: Abstraction has 451667 states and 609126 transitions. [2018-07-24 11:03:32,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 11:03:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 451667 states and 609126 transitions. [2018-07-24 11:03:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-24 11:03:32,383 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:32,383 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:03:32,383 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1842333471, now seen corresponding path program 1 times [2018-07-24 11:03:32,384 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:32,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:32,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:32,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:32,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 260 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:03:32,836 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:32,836 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:32,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:32,844 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:33,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 11:03:33,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 187 proven. 60 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 11:03:33,627 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:33,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 11 [2018-07-24 11:03:33,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:33,629 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:03:33,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:03:33,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:03:33,629 INFO L87 Difference]: Start difference. First operand 451667 states and 609126 transitions. Second operand 5 states. [2018-07-24 11:03:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:57,153 INFO L93 Difference]: Finished difference Result 1166802 states and 1663876 transitions. [2018-07-24 11:03:57,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:03:57,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 358 [2018-07-24 11:03:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:04:02,214 INFO L225 Difference]: With dead ends: 1166802 [2018-07-24 11:04:02,215 INFO L226 Difference]: Without dead ends: 715146 [2018-07-24 11:04:03,411 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 711 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:04:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715146 states. [2018-07-24 11:04:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715146 to 692781. [2018-07-24 11:04:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692781 states. [2018-07-24 11:04:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692781 states to 692781 states and 910040 transitions. [2018-07-24 11:04:46,963 INFO L78 Accepts]: Start accepts. Automaton has 692781 states and 910040 transitions. Word has length 358 [2018-07-24 11:04:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:04:46,963 INFO L471 AbstractCegarLoop]: Abstraction has 692781 states and 910040 transitions. [2018-07-24 11:04:46,963 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:04:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 692781 states and 910040 transitions. [2018-07-24 11:04:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-24 11:04:47,208 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:04:47,209 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 11:04:47,209 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:04:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1887158498, now seen corresponding path program 1 times [2018-07-24 11:04:47,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:04:47,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:47,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:47,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:47,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:04:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 296 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 11:04:47,739 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:47,739 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:04:47,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:47,748 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:48,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 11:04:48,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 11:04:48,527 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:48,527 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:04:48,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:48,547 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:49,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 11:04:50,366 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 11:04:50,567 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:04:50,567 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:04:50,573 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:04:50,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:04:50 BoogieIcfgContainer [2018-07-24 11:04:50,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:04:50,574 INFO L168 Benchmark]: Toolchain (without parser) took 207052.74 ms. Allocated memory was 1.5 GB in the beginning and 7.2 GB in the end (delta: 5.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-07-24 11:04:50,576 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. [2018-07-24 11:04:50,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1180.70 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:04:50,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:04:50,578 INFO L168 Benchmark]: Boogie Preprocessor took 357.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -942.5 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:04:50,579 INFO L168 Benchmark]: RCFGBuilder took 5272.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 284.6 MB). Peak memory consumption was 284.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:04:50,580 INFO L168 Benchmark]: TraceAbstraction took 200105.52 ms. Allocated memory was 2.3 GB in the beginning and 7.2 GB in the end (delta: 4.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-07-24 11:04:50,590 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 1180.70 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 129.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -942.5 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5272.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 284.6 MB). Peak memory consumption was 284.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200105.52 ms. Allocated memory was 2.3 GB in the beginning and 7.2 GB in the end (delta: 4.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1494]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1494). Cancelled while BasicCegarLoop was analyzing trace of length 371 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 200.0s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 103.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3038 SDtfs, 24955 SDslu, 3427 SDs, 0 SdLazy, 28640 SolverSat, 7439 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5914 GetRequests, 5648 SyntacticMatches, 19 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7464 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692781occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 75.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 40522 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 5593 NumberOfCodeBlocks, 5593 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 8358 ConstructedInterpolants, 0 QuantifiedInterpolants, 4084512 SizeOfPredicates, 29 NumberOfNonLiveVariables, 12617 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 4495/4825 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label27_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-04-50-613.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label27_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-04-50-613.csv Completed graceful shutdown