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_label12_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 07:37:34,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 07:37:34,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 07:37:34,752 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 07:37:34,752 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 07:37:34,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 07:37:34,755 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 07:37:34,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 07:37:34,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 07:37:34,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 07:37:34,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 07:37:34,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 07:37:34,767 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 07:37:34,768 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 07:37:34,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 07:37:34,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 07:37:34,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 07:37:34,773 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 07:37:34,784 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 07:37:34,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 07:37:34,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 07:37:34,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 07:37:34,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 07:37:34,814 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 07:37:34,832 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 07:37:34,832 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 07:37:34,833 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 07:37:34,833 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 07:37:34,833 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 07:37:34,834 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 07:37:34,834 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 07:37:34,834 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 07:37:34,834 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 07:37:34,834 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 07:37:34,835 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 07:37:34,835 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 07:37:34,836 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 07:37:34,836 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 07:37:34,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 07:37:34,836 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 07:37:34,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 07:37:34,836 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 07:37:34,837 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 07:37:34,837 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 07:37:34,837 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 07:37:34,837 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 07:37:34,837 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 07:37:34,838 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 07:37:34,838 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 07:37:34,838 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 07:37:34,838 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 07:37:34,838 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 07:37:34,839 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 07:37:34,839 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 07:37:34,839 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 07:37:34,839 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 07:37:34,839 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 07:37:34,839 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 07:37:34,840 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 07:37:34,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 07:37:34,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 07:37:34,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 07:37:34,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 07:37:34,919 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 07:37:34,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12_true-unreach-call_false-termination.c [2018-07-21 07:37:35,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/61d3cdb7b/52dd938d3a494c26a7cc1517b8aec668/FLAGce6fe9b4a [2018-07-21 07:37:35,619 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 07:37:35,620 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label12_true-unreach-call_false-termination.c [2018-07-21 07:37:35,637 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/61d3cdb7b/52dd938d3a494c26a7cc1517b8aec668/FLAGce6fe9b4a [2018-07-21 07:37:35,664 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/61d3cdb7b/52dd938d3a494c26a7cc1517b8aec668 [2018-07-21 07:37:35,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 07:37:35,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 07:37:35,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 07:37:35,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 07:37:35,700 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 07:37:35,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:37:35" (1/1) ... [2018-07-21 07:37:35,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7388a31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:35, skipping insertion in model container [2018-07-21 07:37:35,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:37:35" (1/1) ... [2018-07-21 07:37:35,935 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 07:37:36,220 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 07:37:36,241 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 07:37:36,449 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 07:37:36,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36 WrapperNode [2018-07-21 07:37:36,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 07:37:36,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 07:37:36,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 07:37:36,504 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 07:37:36,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 07:37:36,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 07:37:36,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 07:37:36,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 07:37:36,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (1/1) ... [2018-07-21 07:37:36,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 07:37:36,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 07:37:36,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 07:37:36,716 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 07:37:36,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (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 07:37:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 07:37:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 07:37:36,965 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 07:37:36,965 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 07:37:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 07:37:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 07:37:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 07:37:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 07:37:40,516 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 07:37:40,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:37:40 BoogieIcfgContainer [2018-07-21 07:37:40,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 07:37:40,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 07:37:40,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 07:37:40,522 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 07:37:40,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:37:35" (1/3) ... [2018-07-21 07:37:40,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7b37b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:37:40, skipping insertion in model container [2018-07-21 07:37:40,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:37:36" (2/3) ... [2018-07-21 07:37:40,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7b37b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:37:40, skipping insertion in model container [2018-07-21 07:37:40,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:37:40" (3/3) ... [2018-07-21 07:37:40,529 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label12_true-unreach-call_false-termination.c [2018-07-21 07:37:40,540 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 07:37:40,551 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 07:37:40,605 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 07:37:40,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 07:37:40,606 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 07:37:40,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 07:37:40,606 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 07:37:40,606 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 07:37:40,607 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 07:37:40,607 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 07:37:40,607 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 07:37:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-07-21 07:37:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-21 07:37:40,653 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:37:40,654 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] [2018-07-21 07:37:40,655 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 07:37:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash -426831369, now seen corresponding path program 1 times [2018-07-21 07:37:40,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:37:40,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:40,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:37:40,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:40,706 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:37:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:37:41,370 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 07:37:41,533 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 07:37:41,536 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 07:37:41,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 07:37:41,537 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:37:41,541 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 07:37:41,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 07:37:41,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 07:37:41,563 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-07-21 07:37:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 07:37:43,247 INFO L93 Difference]: Finished difference Result 626 states and 1068 transitions. [2018-07-21 07:37:43,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 07:37:43,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2018-07-21 07:37:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 07:37:43,271 INFO L225 Difference]: With dead ends: 626 [2018-07-21 07:37:43,272 INFO L226 Difference]: Without dead ends: 387 [2018-07-21 07:37:43,281 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 07:37:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-21 07:37:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-21 07:37:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-21 07:37:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 644 transitions. [2018-07-21 07:37:43,405 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 644 transitions. Word has length 125 [2018-07-21 07:37:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 07:37:43,407 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 644 transitions. [2018-07-21 07:37:43,407 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 07:37:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 644 transitions. [2018-07-21 07:37:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-21 07:37:43,415 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:37:43,415 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 07:37:43,415 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 07:37:43,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1344211936, now seen corresponding path program 1 times [2018-07-21 07:37:43,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:37:43,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:43,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:37:43,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:43,418 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:37:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:37:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 07:37:43,636 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 07:37:43,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 07:37:43,636 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:37:43,638 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 07:37:43,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 07:37:43,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 07:37:43,639 INFO L87 Difference]: Start difference. First operand 383 states and 644 transitions. Second operand 6 states. [2018-07-21 07:37:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 07:37:45,336 INFO L93 Difference]: Finished difference Result 1195 states and 2114 transitions. [2018-07-21 07:37:45,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 07:37:45,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-07-21 07:37:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 07:37:45,350 INFO L225 Difference]: With dead ends: 1195 [2018-07-21 07:37:45,350 INFO L226 Difference]: Without dead ends: 818 [2018-07-21 07:37:45,356 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 07:37:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-07-21 07:37:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 799. [2018-07-21 07:37:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2018-07-21 07:37:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1290 transitions. [2018-07-21 07:37:45,424 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1290 transitions. Word has length 146 [2018-07-21 07:37:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 07:37:45,424 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1290 transitions. [2018-07-21 07:37:45,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 07:37:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1290 transitions. [2018-07-21 07:37:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-21 07:37:45,431 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:37:45,432 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 07:37:45,432 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 07:37:45,432 INFO L82 PathProgramCache]: Analyzing trace with hash -7038900, now seen corresponding path program 1 times [2018-07-21 07:37:45,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:37:45,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:45,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:37:45,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:45,434 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:37:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:37:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 07:37:45,632 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 07:37:45,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 07:37:45,632 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:37:45,633 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 07:37:45,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 07:37:45,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 07:37:45,634 INFO L87 Difference]: Start difference. First operand 799 states and 1290 transitions. Second operand 3 states. [2018-07-21 07:37:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 07:37:48,414 INFO L93 Difference]: Finished difference Result 2287 states and 3807 transitions. [2018-07-21 07:37:48,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 07:37:48,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2018-07-21 07:37:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 07:37:48,433 INFO L225 Difference]: With dead ends: 2287 [2018-07-21 07:37:48,434 INFO L226 Difference]: Without dead ends: 1494 [2018-07-21 07:37:48,439 INFO L578 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 [2018-07-21 07:37:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2018-07-21 07:37:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1490. [2018-07-21 07:37:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2018-07-21 07:37:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2299 transitions. [2018-07-21 07:37:48,548 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2299 transitions. Word has length 147 [2018-07-21 07:37:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 07:37:48,549 INFO L471 AbstractCegarLoop]: Abstraction has 1490 states and 2299 transitions. [2018-07-21 07:37:48,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 07:37:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2299 transitions. [2018-07-21 07:37:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-21 07:37:48,560 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:37:48,562 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:48,562 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 07:37:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2017398780, now seen corresponding path program 1 times [2018-07-21 07:37:48,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:37:48,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:48,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:37:48,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:37:48,564 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:37:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:37:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-21 07:37:48,855 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 07:37:48,855 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 07:37:48,856 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-07-21 07:37:48,858 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [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], [182], [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], [671], [673], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 07:37:48,933 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 07:37:48,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 07:38:00,553 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 07:38:00,555 INFO L272 AbstractInterpreter]: Visited 63 different actions 63 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-07-21 07:38:00,576 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 07:38:07,793 INFO L232 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 80.48% of their original sizes. [2018-07-21 07:38:07,793 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 07:38:09,302 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 07:38:09,303 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 07:38:09,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-07-21 07:38:09,303 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:38:09,304 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-21 07:38:09,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-21 07:38:09,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-21 07:38:09,305 INFO L87 Difference]: Start difference. First operand 1490 states and 2299 transitions. Second operand 12 states. [2018-07-21 07:38:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 07:38:39,308 INFO L93 Difference]: Finished difference Result 3032 states and 4692 transitions. [2018-07-21 07:38:39,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-21 07:38:39,309 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2018-07-21 07:38:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 07:38:39,320 INFO L225 Difference]: With dead ends: 3032 [2018-07-21 07:38:39,320 INFO L226 Difference]: Without dead ends: 1548 [2018-07-21 07:38:39,325 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-07-21 07:38:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2018-07-21 07:38:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2018-07-21 07:38:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2018-07-21 07:38:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2367 transitions. [2018-07-21 07:38:39,398 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2367 transitions. Word has length 182 [2018-07-21 07:38:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 07:38:39,399 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2367 transitions. [2018-07-21 07:38:39,399 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-21 07:38:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2367 transitions. [2018-07-21 07:38:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-21 07:38:39,409 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 07:38:39,409 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2018-07-21 07:38:39,409 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 07:38:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1606806301, now seen corresponding path program 1 times [2018-07-21 07:38:39,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 07:38:39,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:38:39,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 07:38:39,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 07:38:39,412 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 07:38:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 07:38:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 64 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 07:38:39,694 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 07:38:39,694 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 07:38:39,694 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-07-21 07:38:39,694 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [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], [182], [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], [671], [673], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 07:38:39,702 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 07:38:39,702 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 07:40:17,982 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 07:40:17,983 INFO L272 AbstractInterpreter]: Visited 130 different actions 321 times. Merged at 7 different actions 16 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2018-07-21 07:40:17,991 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 07:40:31,039 INFO L232 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 81.13% of their original sizes. [2018-07-21 07:40:31,039 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 07:40:48,367 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 07:40:48,368 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 07:40:48,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [9] total 32 [2018-07-21 07:40:48,368 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 07:40:48,368 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-21 07:40:48,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-21 07:40:48,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2018-07-21 07:40:48,369 INFO L87 Difference]: Start difference. First operand 1548 states and 2367 transitions. Second operand 25 states. Received shutdown request... [2018-07-21 07:41:42,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-21 07:41:42,377 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 07:41:42,383 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 07:41:42,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:41:42 BoogieIcfgContainer [2018-07-21 07:41:42,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 07:41:42,384 INFO L168 Benchmark]: Toolchain (without parser) took 246706.36 ms. Allocated memory was 302.5 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 244.7 MB in the beginning and 304.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-07-21 07:41:42,386 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 302.5 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 07:41:42,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.83 ms. Allocated memory is still 302.5 MB. Free memory was 243.7 MB in the beginning and 212.8 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 5.3 GB. [2018-07-21 07:41:42,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.65 ms. Allocated memory is still 302.5 MB. Free memory was 212.8 MB in the beginning and 206.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 5.3 GB. [2018-07-21 07:41:42,388 INFO L168 Benchmark]: Boogie Preprocessor took 112.07 ms. Allocated memory is still 302.5 MB. Free memory was 206.7 MB in the beginning and 202.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. [2018-07-21 07:41:42,388 INFO L168 Benchmark]: RCFGBuilder took 3802.12 ms. Allocated memory was 302.5 MB in the beginning and 469.2 MB in the end (delta: 166.7 MB). Free memory was 201.7 MB in the beginning and 326.6 MB in the end (delta: -124.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 5.3 GB. [2018-07-21 07:41:42,389 INFO L168 Benchmark]: TraceAbstraction took 241865.29 ms. Allocated memory was 469.2 MB in the beginning and 2.2 GB in the end (delta: 1.8 GB). Free memory was 326.6 MB in the beginning and 304.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-07-21 07:41:42,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 302.5 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 813.83 ms. Allocated memory is still 302.5 MB. Free memory was 243.7 MB in the beginning and 212.8 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 98.65 ms. Allocated memory is still 302.5 MB. Free memory was 212.8 MB in the beginning and 206.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 112.07 ms. Allocated memory is still 302.5 MB. Free memory was 206.7 MB in the beginning and 202.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 3802.12 ms. Allocated memory was 302.5 MB in the beginning and 469.2 MB in the end (delta: 166.7 MB). Free memory was 201.7 MB in the beginning and 326.6 MB in the end (delta: -124.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 241865.29 ms. Allocated memory was 469.2 MB in the beginning and 2.2 GB in the end (delta: 1.8 GB). Free memory was 326.6 MB in the beginning and 304.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 526]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 526). Cancelled while BasicCegarLoop was constructing difference of abstraction (1548states) and interpolant automaton (currently 72 states, 25 states before enhancement), while ReachableStatesComputation was computing reachable states (3563 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 241.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 90.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 974 SDtfs, 4866 SDslu, 1378 SDs, 0 SdLazy, 5370 SolverSat, 1128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 460 GetRequests, 315 SyntacticMatches, 34 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2751 ImplicationChecksByTransitivity, 29.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1548occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 110.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9947326358616676 AbsIntWeakeningRatio, 0.1989247311827957 AbsIntAvgWeakeningVarsNumRemoved, 242.24193548387098 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 792 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 787 ConstructedInterpolants, 0 QuantifiedInterpolants, 320346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 160/179 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem02_label12_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_07-41-42-406.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem02_label12_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_07-41-42-406.csv Completed graceful shutdown