java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 07:54:42,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 07:54:42,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 07:54:42,620 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 07:54:42,620 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 07:54:42,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 07:54:42,624 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 07:54:42,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 07:54:42,632 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 07:54:42,633 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 07:54:42,634 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 07:54:42,634 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 07:54:42,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 07:54:42,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 07:54:42,649 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 07:54:42,650 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 07:54:42,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 07:54:42,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 07:54:42,658 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 07:54:42,660 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 07:54:42,661 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 07:54:42,662 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 07:54:42,665 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 07:54:42,674 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 07:54:42,690 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 07:54:42,690 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 07:54:42,691 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 07:54:42,691 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 07:54:42,691 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 07:54:42,691 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 07:54:42,695 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 07:54:42,695 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 07:54:42,695 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 07:54:42,695 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 07:54:42,696 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 07:54:42,696 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 07:54:42,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 07:54:42,697 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 07:54:42,697 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 07:54:42,697 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 07:54:42,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 07:54:42,698 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 07:54:42,698 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 07:54:42,698 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 07:54:42,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 07:54:42,699 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 07:54:42,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 07:54:42,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 07:54:42,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 07:54:42,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 07:54:42,700 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 07:54:42,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 07:54:42,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 07:54:42,700 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 07:54:42,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 07:54:42,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 07:54:42,701 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 07:54:42,701 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 07:54:42,701 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 07:54:42,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 07:54:42,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 07:54:42,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 07:54:42,793 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 07:54:42,793 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 07:54:42,794 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26_true-unreach-call_false-termination.c [2018-07-21 07:54:43,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c321fb8/a020039ca99044b58a0c375fb94ce9ef/FLAG279b68c44 [2018-07-21 07:54:43,489 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 07:54:43,490 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label26_true-unreach-call_false-termination.c [2018-07-21 07:54:43,509 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c321fb8/a020039ca99044b58a0c375fb94ce9ef/FLAG279b68c44 [2018-07-21 07:54:43,527 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c321fb8/a020039ca99044b58a0c375fb94ce9ef [2018-07-21 07:54:43,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 07:54:43,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 07:54:43,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 07:54:43,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 07:54:43,563 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 07:54:43,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:54:43" (1/1) ... [2018-07-21 07:54:43,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7b84d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:43, skipping insertion in model container [2018-07-21 07:54:43,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:54:43" (1/1) ... [2018-07-21 07:54:43,794 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 07:54:44,079 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 07:54:44,105 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 07:54:44,217 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 07:54:44,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44 WrapperNode [2018-07-21 07:54:44,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 07:54:44,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 07:54:44,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 07:54:44,293 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 07:54:44,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 07:54:44,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 07:54:44,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 07:54:44,411 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 07:54:44,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... [2018-07-21 07:54:44,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 07:54:44,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 07:54:44,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 07:54:44,542 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 07:54:44,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 07:54:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 07:54:44,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 07:54:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 07:54:44,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 07:54:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 07:54:44,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 07:54:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 07:54:44,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 07:54:48,531 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 07:54:48,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:54:48 BoogieIcfgContainer [2018-07-21 07:54:48,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 07:54:48,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 07:54:48,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 07:54:48,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 07:54:48,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:54:43" (1/3) ... [2018-07-21 07:54:48,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2cb163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:54:48, skipping insertion in model container [2018-07-21 07:54:48,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:44" (2/3) ... [2018-07-21 07:54:48,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2cb163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:54:48, skipping insertion in model container [2018-07-21 07:54:48,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:54:48" (3/3) ... [2018-07-21 07:54:48,548 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label26_true-unreach-call_false-termination.c [2018-07-21 07:54:48,561 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 07:54:48,576 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 07:54:48,634 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 07:54:48,635 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 07:54:48,635 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 07:54:48,635 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 07:54:48,635 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 07:54:48,635 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 07:54:48,635 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 07:54:48,635 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 07:54:48,635 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 07:54:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-07-21 07:54:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-21 07:54:48,685 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:54:48,686 INFO L358 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] [2018-07-21 07:54:48,687 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 07:54:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1783395935, now seen corresponding path program 1 times [2018-07-21 07:54:48,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:54:48,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:54:48,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:54:48,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:54:48,743 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:54:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:54:49,453 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 07:54:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 07:54:49,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 07:54:49,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 07:54:49,590 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:54:49,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 07:54:49,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 07:54:49,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 07:54:49,619 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-07-21 07:54:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 07:54:50,940 INFO L93 Difference]: Finished difference Result 623 states and 1063 transitions. [2018-07-21 07:54:50,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 07:54:50,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-07-21 07:54:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 07:54:50,967 INFO L225 Difference]: With dead ends: 623 [2018-07-21 07:54:50,967 INFO L226 Difference]: Without dead ends: 384 [2018-07-21 07:54:50,974 INFO L578 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 [2018-07-21 07:54:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-21 07:54:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-07-21 07:54:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-21 07:54:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 642 transitions. [2018-07-21 07:54:51,057 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 642 transitions. Word has length 143 [2018-07-21 07:54:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 07:54:51,059 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 642 transitions. [2018-07-21 07:54:51,059 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 07:54:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 642 transitions. [2018-07-21 07:54:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-21 07:54:51,067 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:54:51,068 INFO L358 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] [2018-07-21 07:54:51,068 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 07:54:51,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2047158878, now seen corresponding path program 1 times [2018-07-21 07:54:51,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:54:51,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:54:51,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:54:51,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:54:51,070 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:54:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:54:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 07:54:51,519 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 07:54:51,519 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 07:54:51,521 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-07-21 07:54:51,524 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [811], [815], [817], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 07:54:51,628 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 07:54:51,629 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 07:55:48,285 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 07:55:48,286 INFO L272 AbstractInterpreter]: Visited 146 different actions 207 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-07-21 07:55:48,299 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 07:55:59,363 INFO L232 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 81.49% of their original sizes. [2018-07-21 07:55:59,363 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 07:56:12,171 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 07:56:12,172 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 07:56:12,172 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-07-21 07:56:12,173 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:56:12,175 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-21 07:56:12,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-21 07:56:12,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-07-21 07:56:12,175 INFO L87 Difference]: Start difference. First operand 382 states and 642 transitions. Second operand 22 states. [2018-07-21 07:56:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 07:56:56,629 INFO L93 Difference]: Finished difference Result 1212 states and 2112 transitions. [2018-07-21 07:56:56,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-21 07:56:56,629 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 153 [2018-07-21 07:56:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 07:56:56,639 INFO L225 Difference]: With dead ends: 1212 [2018-07-21 07:56:56,639 INFO L226 Difference]: Without dead ends: 836 [2018-07-21 07:56:56,647 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 183 GetRequests, 108 SyntacticMatches, 24 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2018-07-21 07:56:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2018-07-21 07:56:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 826. [2018-07-21 07:56:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2018-07-21 07:56:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1125 transitions. [2018-07-21 07:56:56,719 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1125 transitions. Word has length 153 [2018-07-21 07:56:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 07:56:56,720 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1125 transitions. [2018-07-21 07:56:56,720 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-21 07:56:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1125 transitions. [2018-07-21 07:56:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-21 07:56:56,728 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:56:56,729 INFO L358 BasicCegarLoop]: trace histogram [3, 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] [2018-07-21 07:56:56,729 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 07:56:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash -445744219, now seen corresponding path program 1 times [2018-07-21 07:56:56,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:56:56,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:56:56,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:56:56,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:56:56,733 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:56:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:56:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 07:56:56,882 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 07:56:56,883 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 07:56:56,883 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-07-21 07:56:56,883 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [811], [815], [817], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 07:56:56,891 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 07:56:56,891 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 07:58:54,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 07:58:54,117 INFO L272 AbstractInterpreter]: Visited 147 different actions 362 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 38 variables. [2018-07-21 07:58:54,127 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown