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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:36:12,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:36:12,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:36:12,839 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:36:12,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:36:12,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:36:12,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:36:12,846 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:36:12,848 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:36:12,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:36:12,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:36:12,851 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:36:12,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:36:12,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:36:12,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:36:12,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:36:12,860 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:36:12,862 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:36:12,864 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:36:12,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:36:12,867 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:36:12,869 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:36:12,871 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:36:12,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:36:12,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:36:12,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:36:12,874 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:36:12,875 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:36:12,877 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:36:12,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:36:12,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:36:12,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 19:36:12,882 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 19:36:12,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:36:12,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:36:12,910 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:36:12,910 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:36:12,911 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:36:12,911 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:36:12,911 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:36:12,911 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:36:12,911 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:36:12,912 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:36:12,912 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:36:12,913 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:36:12,913 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:36:12,914 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:36:12,914 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:36:12,915 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:36:12,915 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:36:12,915 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:36:12,915 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:36:12,915 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:36:12,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:36:12,916 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:36:12,916 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:36:12,917 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:36:12,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:36:12,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:36:12,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:36:12,918 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:36:12,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:36:12,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:36:12,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:36:12,919 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:36:12,919 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:36:12,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:36:12,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:36:13,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:36:13,006 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:36:13,007 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:36:13,008 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-07-23 19:36:13,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edea7f7c4/29c42765991141e0ad4da4ba2170249e/FLAG9983c1879 [2018-07-23 19:36:13,743 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:36:13,744 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-07-23 19:36:13,766 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edea7f7c4/29c42765991141e0ad4da4ba2170249e/FLAG9983c1879 [2018-07-23 19:36:13,790 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edea7f7c4/29c42765991141e0ad4da4ba2170249e [2018-07-23 19:36:13,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:36:13,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:36:13,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:36:13,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:36:13,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:36:13,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:36:13" (1/1) ... [2018-07-23 19:36:13,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ede2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:13, skipping insertion in model container [2018-07-23 19:36:13,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:36:13" (1/1) ... [2018-07-23 19:36:14,043 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:36:14,397 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:36:14,412 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:36:14,607 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:36:14,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14 WrapperNode [2018-07-23 19:36:14,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:36:14,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:36:14,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:36:14,671 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:36:14,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:14,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:14,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:36:14,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:36:14,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:36:14,821 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:36:15,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (1/1) ... [2018-07-23 19:36:15,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:36:15,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:36:15,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:36:15,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:36:15,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (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 [2018-07-23 19:36:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:36:15,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:36:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:36:15,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:36:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:36:15,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:36:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 19:36:15,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 19:36:19,423 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:36:19,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:36:19 BoogieIcfgContainer [2018-07-23 19:36:19,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:36:19,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:36:19,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:36:19,437 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:36:19,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:36:13" (1/3) ... [2018-07-23 19:36:19,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605438f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:36:19, skipping insertion in model container [2018-07-23 19:36:19,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:36:14" (2/3) ... [2018-07-23 19:36:19,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605438f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:36:19, skipping insertion in model container [2018-07-23 19:36:19,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:36:19" (3/3) ... [2018-07-23 19:36:19,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label34_false-unreach-call_false-termination.c [2018-07-23 19:36:19,466 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:36:19,483 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:36:19,551 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:36:19,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:36:19,553 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:36:19,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:36:19,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:36:19,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:36:19,554 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:36:19,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:36:19,554 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:36:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 19:36:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 19:36:19,609 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:19,610 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] [2018-07-23 19:36:19,610 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:36:19,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1708660692, now seen corresponding path program 1 times [2018-07-23 19:36:19,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:19,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:19,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:19,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:19,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:20,068 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:36:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:36:20,127 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:36:20,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:36:20,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:20,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:36:20,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:36:20,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:36:20,156 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-23 19:36:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:36:21,874 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-23 19:36:21,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:36:21,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-07-23 19:36:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:36:21,899 INFO L225 Difference]: With dead ends: 691 [2018-07-23 19:36:21,899 INFO L226 Difference]: Without dead ends: 434 [2018-07-23 19:36:21,908 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:36:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-23 19:36:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-23 19:36:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-23 19:36:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 772 transitions. [2018-07-23 19:36:21,990 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 772 transitions. Word has length 34 [2018-07-23 19:36:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:36:21,990 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 772 transitions. [2018-07-23 19:36:21,990 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:36:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 772 transitions. [2018-07-23 19:36:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 19:36:21,997 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:21,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:36:21,998 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:36:21,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2090221912, now seen corresponding path program 1 times [2018-07-23 19:36:21,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:22,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:22,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:22,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:36:22,320 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:36:22,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:36:22,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:22,323 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:36:22,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:36:22,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:36:22,324 INFO L87 Difference]: Start difference. First operand 434 states and 772 transitions. Second operand 6 states. [2018-07-23 19:36:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:36:26,960 INFO L93 Difference]: Finished difference Result 1234 states and 2250 transitions. [2018-07-23 19:36:26,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:36:26,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-07-23 19:36:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:36:26,978 INFO L225 Difference]: With dead ends: 1234 [2018-07-23 19:36:26,978 INFO L226 Difference]: Without dead ends: 806 [2018-07-23 19:36:26,987 INFO L573 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 [2018-07-23 19:36:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-07-23 19:36:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-07-23 19:36:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-23 19:36:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2018-07-23 19:36:27,053 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 104 [2018-07-23 19:36:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:36:27,054 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2018-07-23 19:36:27,054 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:36:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2018-07-23 19:36:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-23 19:36:27,060 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:27,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:36:27,060 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:36:27,061 INFO L82 PathProgramCache]: Analyzing trace with hash 575249015, now seen corresponding path program 1 times [2018-07-23 19:36:27,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:27,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:27,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:27,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:27,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:36:27,306 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:36:27,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:36:27,307 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:27,307 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:36:27,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:36:27,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:36:27,310 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand 5 states. [2018-07-23 19:36:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:36:30,550 INFO L93 Difference]: Finished difference Result 2186 states and 3741 transitions. [2018-07-23 19:36:30,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:36:30,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-07-23 19:36:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:36:30,565 INFO L225 Difference]: With dead ends: 2186 [2018-07-23 19:36:30,566 INFO L226 Difference]: Without dead ends: 1395 [2018-07-23 19:36:30,569 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:36:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2018-07-23 19:36:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2018-07-23 19:36:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2018-07-23 19:36:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2191 transitions. [2018-07-23 19:36:30,626 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2191 transitions. Word has length 105 [2018-07-23 19:36:30,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:36:30,627 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2191 transitions. [2018-07-23 19:36:30,627 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:36:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2191 transitions. [2018-07-23 19:36:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-23 19:36:30,631 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:30,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:36:30,631 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:36:30,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1914954131, now seen corresponding path program 1 times [2018-07-23 19:36:30,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:30,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:30,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:30,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:30,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:36:30,843 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:36:30,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:36:30,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:30,843 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:36:30,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:36:30,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:36:30,844 INFO L87 Difference]: Start difference. First operand 1369 states and 2191 transitions. Second operand 5 states. [2018-07-23 19:36:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:36:33,867 INFO L93 Difference]: Finished difference Result 4058 states and 6474 transitions. [2018-07-23 19:36:33,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 19:36:33,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-07-23 19:36:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:36:33,892 INFO L225 Difference]: With dead ends: 4058 [2018-07-23 19:36:33,892 INFO L226 Difference]: Without dead ends: 2695 [2018-07-23 19:36:33,904 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:36:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2018-07-23 19:36:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2604. [2018-07-23 19:36:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2018-07-23 19:36:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3730 transitions. [2018-07-23 19:36:34,012 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3730 transitions. Word has length 107 [2018-07-23 19:36:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:36:34,013 INFO L471 AbstractCegarLoop]: Abstraction has 2604 states and 3730 transitions. [2018-07-23 19:36:34,013 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:36:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3730 transitions. [2018-07-23 19:36:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 19:36:34,018 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:34,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:36:34,020 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:36:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1726782724, now seen corresponding path program 1 times [2018-07-23 19:36:34,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:34,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:34,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:34,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:34,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:36:34,228 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:36:34,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:36:34,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:34,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:36:34,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:36:34,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:36:34,230 INFO L87 Difference]: Start difference. First operand 2604 states and 3730 transitions. Second operand 4 states. [2018-07-23 19:36:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:36:36,541 INFO L93 Difference]: Finished difference Result 8191 states and 11810 transitions. [2018-07-23 19:36:36,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:36:36,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-07-23 19:36:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:36:36,565 INFO L225 Difference]: With dead ends: 8191 [2018-07-23 19:36:36,565 INFO L226 Difference]: Without dead ends: 3716 [2018-07-23 19:36:36,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:36:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2018-07-23 19:36:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3714. [2018-07-23 19:36:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2018-07-23 19:36:36,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 5011 transitions. [2018-07-23 19:36:36,709 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 5011 transitions. Word has length 130 [2018-07-23 19:36:36,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:36:36,710 INFO L471 AbstractCegarLoop]: Abstraction has 3714 states and 5011 transitions. [2018-07-23 19:36:36,710 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:36:36,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 5011 transitions. [2018-07-23 19:36:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 19:36:36,719 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:36,719 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:36:36,719 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:36:36,720 INFO L82 PathProgramCache]: Analyzing trace with hash 717538656, now seen corresponding path program 1 times [2018-07-23 19:36:36,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:36,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:36,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:36,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:36,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:37,386 WARN L169 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-07-23 19:36:37,774 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-23 19:36:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 54 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:36:38,183 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:36:38,183 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:36:38,185 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-07-23 19:36:38,187 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [690], [972], [973], [974], [975], [977], [978] [2018-07-23 19:36:38,287 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:36:38,287 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:36:44,158 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:36:44,160 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 19:36:44,193 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:36:47,945 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.7% of their original sizes. [2018-07-23 19:36:47,945 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:36:48,293 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:36:48,294 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:36:48,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 19:36:48,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:48,295 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:36:48,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:36:48,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:36:48,296 INFO L87 Difference]: Start difference. First operand 3714 states and 5011 transitions. Second operand 7 states. [2018-07-23 19:36:58,507 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:37:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:37:17,409 INFO L93 Difference]: Finished difference Result 7607 states and 10237 transitions. [2018-07-23 19:37:17,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:37:17,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-07-23 19:37:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:37:17,426 INFO L225 Difference]: With dead ends: 7607 [2018-07-23 19:37:17,426 INFO L226 Difference]: Without dead ends: 3899 [2018-07-23 19:37:17,438 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:37:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2018-07-23 19:37:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3897. [2018-07-23 19:37:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2018-07-23 19:37:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5202 transitions. [2018-07-23 19:37:17,530 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5202 transitions. Word has length 222 [2018-07-23 19:37:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:37:17,530 INFO L471 AbstractCegarLoop]: Abstraction has 3897 states and 5202 transitions. [2018-07-23 19:37:17,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:37:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5202 transitions. [2018-07-23 19:37:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-23 19:37:17,540 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:17,541 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-23 19:37:17,541 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2097052345, now seen corresponding path program 1 times [2018-07-23 19:37:17,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:17,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:17,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:17,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:17,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 169 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:37:18,383 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:37:18,383 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:37:18,383 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-07-23 19:37:18,383 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [690], [972], [973], [974], [975], [977], [978] [2018-07-23 19:37:18,389 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:37:18,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:37:32,226 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:37:32,226 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 19:37:32,232 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:37:40,700 INFO L232 lantSequenceWeakener]: Weakened 305 states. On average, predicates are now at 77.65% of their original sizes. [2018-07-23 19:37:40,700 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:37:42,193 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:37:42,193 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:37:42,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2018-07-23 19:37:42,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:37:42,194 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:37:42,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:37:42,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:37:42,195 INFO L87 Difference]: Start difference. First operand 3897 states and 5202 transitions. Second operand 11 states. [2018-07-23 19:38:28,586 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:39:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:39:02,143 INFO L93 Difference]: Finished difference Result 7977 states and 10657 transitions. [2018-07-23 19:39:02,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:39:02,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 307 [2018-07-23 19:39:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:39:02,163 INFO L225 Difference]: With dead ends: 7977 [2018-07-23 19:39:02,163 INFO L226 Difference]: Without dead ends: 4269 [2018-07-23 19:39:02,178 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 275 SyntacticMatches, 22 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 19:39:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2018-07-23 19:39:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4266. [2018-07-23 19:39:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4266 states. [2018-07-23 19:39:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 5588 transitions. [2018-07-23 19:39:02,278 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 5588 transitions. Word has length 307 [2018-07-23 19:39:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:39:02,279 INFO L471 AbstractCegarLoop]: Abstraction has 4266 states and 5588 transitions. [2018-07-23 19:39:02,279 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:39:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 5588 transitions. [2018-07-23 19:39:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-23 19:39:02,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:39:02,291 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:39:02,291 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:39:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2103959475, now seen corresponding path program 1 times [2018-07-23 19:39:02,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:39:02,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:39:02,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:39:02,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:39:02,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:39:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:39:02,815 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 19:39:03,024 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-23 19:39:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 94 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:39:03,945 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:39:03,945 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:39:03,945 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-07-23 19:39:03,945 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [682], [683], [687], [690], [972], [973], [974], [975], [977], [978] [2018-07-23 19:39:03,952 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:39:03,953 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:39:25,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:39:25,186 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 19:39:25,194 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:39:39,604 INFO L232 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 77.62% of their original sizes. [2018-07-23 19:39:39,604 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:39:40,605 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:39:40,606 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:39:40,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2018-07-23 19:39:40,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:39:40,607 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:39:40,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:39:40,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:39:40,607 INFO L87 Difference]: Start difference. First operand 4266 states and 5588 transitions. Second operand 11 states. [2018-07-23 19:40:10,152 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-23 19:40:13,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:40:13,676 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 19:40:13,681 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 19:40:13,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 07:40:13 BoogieIcfgContainer [2018-07-23 19:40:13,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 19:40:13,682 INFO L168 Benchmark]: Toolchain (without parser) took 239875.95 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -965.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-23 19:40:13,683 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 19:40:13,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 861.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-23 19:40:13,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.89 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 19:40:13,685 INFO L168 Benchmark]: Boogie Preprocessor took 358.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -833.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-07-23 19:40:13,686 INFO L168 Benchmark]: RCFGBuilder took 4243.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 142.8 MB). Peak memory consumption was 142.8 MB. Max. memory is 7.1 GB. [2018-07-23 19:40:13,687 INFO L168 Benchmark]: TraceAbstraction took 234251.37 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -337.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-23 19:40:13,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 861.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 149.89 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 358.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -833.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4243.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 142.8 MB). Peak memory consumption was 142.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234251.37 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -337.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (4266states) and interpolant automaton (currently 13 states, 11 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 157.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 917 SDtfs, 5006 SDslu, 1137 SDs, 0 SdLazy, 8739 SolverSat, 1588 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 913 GetRequests, 804 SyntacticMatches, 48 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4266occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 41.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9954847227143121 AbsIntWeakeningRatio, 0.10477299185098952 AbsIntAvgWeakeningVarsNumRemoved, 249.55413271245635 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 133 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1342 NumberOfCodeBlocks, 1342 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3894947 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 440/895 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/Problem14_label34_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_19-40-13-706.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label34_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_19-40-13-706.csv Completed graceful shutdown