java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:07:52,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:07:52,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:07:52,859 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:07:52,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:07:52,862 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:07:52,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:07:52,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:07:52,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:07:52,871 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:07:52,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:07:52,874 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:07:52,875 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:07:52,876 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:07:52,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:07:52,880 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:07:52,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:07:52,892 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:07:52,894 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:07:52,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:07:52,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:07:52,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:07:52,903 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 12:07:52,913 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:07:52,914 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:07:52,915 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:07:52,915 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:07:52,916 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:07:52,935 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:07:52,936 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:07:52,937 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:07:52,937 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:07:52,937 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:07:52,938 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:07:52,938 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:07:52,938 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:07:52,938 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:07:52,938 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:07:52,939 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:07:52,939 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:07:52,939 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:07:52,940 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:07:52,940 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:07:52,940 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:07:52,940 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:07:52,941 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:07:52,941 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:07:52,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:07:52,942 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:07:52,942 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:07:52,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:07:52,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:07:52,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:07:52,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:07:52,943 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:07:52,943 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:07:52,944 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:07:52,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:07:52,944 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:07:52,944 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:07:52,944 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:07:53,005 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:07:53,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:07:53,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:07:53,023 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:07:53,023 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:07:53,024 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c [2018-07-24 12:07:53,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e7bd6ef/1a6160da1f544530838d58709b1738e1/FLAG3e1acd340 [2018-07-24 12:07:53,698 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:07:53,702 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c [2018-07-24 12:07:53,727 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e7bd6ef/1a6160da1f544530838d58709b1738e1/FLAG3e1acd340 [2018-07-24 12:07:53,749 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e7bd6ef/1a6160da1f544530838d58709b1738e1 [2018-07-24 12:07:53,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:07:53,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:07:53,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:07:53,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:07:53,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:07:53,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:07:53" (1/1) ... [2018-07-24 12:07:53,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1cb37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:53, skipping insertion in model container [2018-07-24 12:07:53,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:07:53" (1/1) ... [2018-07-24 12:07:54,034 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:07:54,613 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:07:54,630 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:07:54,961 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:07:55,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55 WrapperNode [2018-07-24 12:07:55,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:07:55,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:07:55,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:07:55,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:07:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:07:55,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:07:55,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:07:55,367 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:07:55,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... [2018-07-24 12:07:55,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:07:55,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:07:55,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:07:55,998 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:07:56,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:07:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:07:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:07:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:07:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:07:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:07:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:07:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:07:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:07:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:07:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:08:02,131 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:08:02,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:08:02 BoogieIcfgContainer [2018-07-24 12:08:02,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:08:02,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:08:02,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:08:02,137 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:08:02,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:07:53" (1/3) ... [2018-07-24 12:08:02,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8435d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:08:02, skipping insertion in model container [2018-07-24 12:08:02,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:55" (2/3) ... [2018-07-24 12:08:02,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8435d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:08:02, skipping insertion in model container [2018-07-24 12:08:02,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:08:02" (3/3) ... [2018-07-24 12:08:02,141 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label07_false-unreach-call.c [2018-07-24 12:08:02,149 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:08:02,157 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:08:02,204 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:08:02,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:08:02,205 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:08:02,205 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:08:02,205 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:08:02,205 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:08:02,206 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:08:02,206 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:08:02,206 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:08:02,238 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:08:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-24 12:08:02,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:02,246 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:02,246 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:08:02,252 INFO L82 PathProgramCache]: Analyzing trace with hash 64694745, now seen corresponding path program 1 times [2018-07-24 12:08:02,255 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:02,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:02,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:02,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:02,298 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:02,659 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:08:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:02,735 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:02,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:02,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:02,740 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:02,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:02,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:02,756 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-07-24 12:08:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:09,989 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-07-24 12:08:09,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:09,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-07-24 12:08:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:10,030 INFO L225 Difference]: With dead ends: 1194 [2018-07-24 12:08:10,031 INFO L226 Difference]: Without dead ends: 754 [2018-07-24 12:08:10,040 INFO L573 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 [2018-07-24 12:08:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-07-24 12:08:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-07-24 12:08:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-07-24 12:08:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-07-24 12:08:10,165 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 17 [2018-07-24 12:08:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:10,166 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-07-24 12:08:10,166 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:10,166 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-07-24 12:08:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-24 12:08:10,174 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:10,176 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:10,177 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:08:10,177 INFO L82 PathProgramCache]: Analyzing trace with hash 28247061, now seen corresponding path program 1 times [2018-07-24 12:08:10,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:10,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:10,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:10,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:10,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:10,644 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:10,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 12:08:10,645 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:10,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 12:08:10,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 12:08:10,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:08:10,648 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 7 states. [2018-07-24 12:08:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:26,143 INFO L93 Difference]: Finished difference Result 2913 states and 5409 transitions. [2018-07-24 12:08:26,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:08:26,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2018-07-24 12:08:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:26,177 INFO L225 Difference]: With dead ends: 2913 [2018-07-24 12:08:26,177 INFO L226 Difference]: Without dead ends: 2167 [2018-07-24 12:08:26,193 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:08:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2018-07-24 12:08:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2110. [2018-07-24 12:08:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2110 states. [2018-07-24 12:08:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3519 transitions. [2018-07-24 12:08:26,339 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3519 transitions. Word has length 91 [2018-07-24 12:08:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:26,340 INFO L471 AbstractCegarLoop]: Abstraction has 2110 states and 3519 transitions. [2018-07-24 12:08:26,341 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 12:08:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3519 transitions. [2018-07-24 12:08:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-24 12:08:26,350 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:26,351 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:26,351 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:08:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1510809517, now seen corresponding path program 1 times [2018-07-24 12:08:26,353 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:26,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:26,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:26,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:26,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:26,751 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:26,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:08:26,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:26,753 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:08:26,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:08:26,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:08:26,753 INFO L87 Difference]: Start difference. First operand 2110 states and 3519 transitions. Second operand 6 states. [2018-07-24 12:08:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:34,859 INFO L93 Difference]: Finished difference Result 6270 states and 10805 transitions. [2018-07-24 12:08:34,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:08:34,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-07-24 12:08:34,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:34,898 INFO L225 Difference]: With dead ends: 6270 [2018-07-24 12:08:34,898 INFO L226 Difference]: Without dead ends: 4166 [2018-07-24 12:08:34,917 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:08:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2018-07-24 12:08:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4109. [2018-07-24 12:08:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4109 states. [2018-07-24 12:08:35,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 6159 transitions. [2018-07-24 12:08:35,065 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 6159 transitions. Word has length 106 [2018-07-24 12:08:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:35,065 INFO L471 AbstractCegarLoop]: Abstraction has 4109 states and 6159 transitions. [2018-07-24 12:08:35,066 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:08:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 6159 transitions. [2018-07-24 12:08:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-24 12:08:35,074 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:35,074 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:35,074 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:08:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1643755856, now seen corresponding path program 1 times [2018-07-24 12:08:35,075 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:35,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:35,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:35,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:35,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:08:35,307 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:35,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:35,307 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:35,308 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:35,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:35,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:35,309 INFO L87 Difference]: Start difference. First operand 4109 states and 6159 transitions. Second operand 3 states. [2018-07-24 12:08:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:39,210 INFO L93 Difference]: Finished difference Result 9466 states and 14934 transitions. [2018-07-24 12:08:39,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:39,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-07-24 12:08:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:39,242 INFO L225 Difference]: With dead ends: 9466 [2018-07-24 12:08:39,242 INFO L226 Difference]: Without dead ends: 5363 [2018-07-24 12:08:39,268 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2018-07-24 12:08:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5358. [2018-07-24 12:08:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5358 states. [2018-07-24 12:08:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 8212 transitions. [2018-07-24 12:08:39,433 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 8212 transitions. Word has length 187 [2018-07-24 12:08:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:39,434 INFO L471 AbstractCegarLoop]: Abstraction has 5358 states and 8212 transitions. [2018-07-24 12:08:39,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 8212 transitions. [2018-07-24 12:08:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-24 12:08:39,440 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:39,440 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:39,441 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:08:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 704350100, now seen corresponding path program 1 times [2018-07-24 12:08:39,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:39,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:39,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:39,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:39,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:40,001 WARN L169 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 12:08:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 20 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:08:40,220 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:08:40,220 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:08:40,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:40,242 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:08:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:40,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:08:41,300 WARN L169 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:08:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:08:41,365 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:08:41,534 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:08:41,664 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-07-24 12:08:43,078 WARN L169 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-07-24 12:08:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 20 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:08:43,752 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:08:43,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:08:43,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:43,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:08:43,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:08:43,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:08:43,756 INFO L87 Difference]: Start difference. First operand 5358 states and 8212 transitions. Second operand 5 states. [2018-07-24 12:08:44,022 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:08:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:59,576 INFO L93 Difference]: Finished difference Result 12896 states and 19950 transitions. [2018-07-24 12:08:59,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:08:59,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-07-24 12:08:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:59,632 INFO L225 Difference]: With dead ends: 12896 [2018-07-24 12:08:59,632 INFO L226 Difference]: Without dead ends: 7544 [2018-07-24 12:08:59,658 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 405 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:08:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2018-07-24 12:08:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 7105. [2018-07-24 12:08:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7105 states. [2018-07-24 12:08:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10655 transitions. [2018-07-24 12:08:59,873 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10655 transitions. Word has length 205 [2018-07-24 12:08:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:59,873 INFO L471 AbstractCegarLoop]: Abstraction has 7105 states and 10655 transitions. [2018-07-24 12:08:59,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:08:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10655 transitions. [2018-07-24 12:08:59,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-24 12:08:59,883 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:59,884 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:59,884 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:08:59,884 INFO L82 PathProgramCache]: Analyzing trace with hash -260715318, now seen corresponding path program 1 times [2018-07-24 12:08:59,885 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:59,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:59,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:59,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:59,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 42 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:00,827 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:00,827 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:09:00,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:00,837 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:00,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 251 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:09:01,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 40 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:02,285 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:02,285 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:09:02,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:02,305 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:02,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 201 proven. 26 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-07-24 12:09:02,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 40 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:03,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:09:03,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:09:03,451 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:09:03,452 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:09:03,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:09:03,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:09:03,453 INFO L87 Difference]: Start difference. First operand 7105 states and 10655 transitions. Second operand 14 states. [2018-07-24 12:09:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:09:38,624 INFO L93 Difference]: Finished difference Result 23802 states and 38646 transitions. [2018-07-24 12:09:38,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-24 12:09:38,631 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 301 [2018-07-24 12:09:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:09:38,713 INFO L225 Difference]: With dead ends: 23802 [2018-07-24 12:09:38,713 INFO L226 Difference]: Without dead ends: 16057 [2018-07-24 12:09:38,777 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1219 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=802, Invalid=2620, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 12:09:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2018-07-24 12:09:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 14719. [2018-07-24 12:09:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14719 states. [2018-07-24 12:09:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14719 states to 14719 states and 22311 transitions. [2018-07-24 12:09:39,283 INFO L78 Accepts]: Start accepts. Automaton has 14719 states and 22311 transitions. Word has length 301 [2018-07-24 12:09:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:39,284 INFO L471 AbstractCegarLoop]: Abstraction has 14719 states and 22311 transitions. [2018-07-24 12:09:39,284 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:09:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 14719 states and 22311 transitions. [2018-07-24 12:09:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-24 12:09:39,301 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:39,301 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:09:39,302 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:09:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash -345609321, now seen corresponding path program 1 times [2018-07-24 12:09:39,302 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:39,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:39,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:39,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:39,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:40,480 WARN L169 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:09:40,971 WARN L169 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-07-24 12:09:41,334 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 12:09:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 42 proven. 252 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:42,123 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:42,123 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:09:42,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:42,136 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:42,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 262 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:09:42,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 40 proven. 254 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:43,333 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:43,333 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:09:43,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:43,350 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:43,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 212 proven. 26 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-07-24 12:09:44,108 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 40 proven. 254 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:44,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:09:44,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:09:44,915 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:09:44,916 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:09:44,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:09:44,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:09:44,917 INFO L87 Difference]: Start difference. First operand 14719 states and 22311 transitions. Second operand 14 states. [2018-07-24 12:10:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:10:21,908 INFO L93 Difference]: Finished difference Result 34349 states and 53146 transitions. [2018-07-24 12:10:21,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 12:10:21,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 386 [2018-07-24 12:10:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:10:21,984 INFO L225 Difference]: With dead ends: 34349 [2018-07-24 12:10:21,984 INFO L226 Difference]: Without dead ends: 18606 [2018-07-24 12:10:22,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1627 GetRequests, 1558 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=889, Invalid=2893, Unknown=0, NotChecked=0, Total=3782 [2018-07-24 12:10:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18606 states. [2018-07-24 12:10:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18606 to 16077. [2018-07-24 12:10:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16077 states. [2018-07-24 12:10:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16077 states to 16077 states and 23696 transitions. [2018-07-24 12:10:22,509 INFO L78 Accepts]: Start accepts. Automaton has 16077 states and 23696 transitions. Word has length 386 [2018-07-24 12:10:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:10:22,509 INFO L471 AbstractCegarLoop]: Abstraction has 16077 states and 23696 transitions. [2018-07-24 12:10:22,509 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:10:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 16077 states and 23696 transitions. [2018-07-24 12:10:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-24 12:10:22,526 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:10:22,526 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:10:22,526 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:10:22,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1662678935, now seen corresponding path program 1 times [2018-07-24 12:10:22,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:10:22,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:22,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:22,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:22,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:10:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:23,392 WARN L169 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 8 [2018-07-24 12:10:23,855 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-07-24 12:10:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 40 proven. 245 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-24 12:10:24,465 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:24,465 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:10:24,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:24,474 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:24,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:10:25,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 114 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:10:25,646 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:25,647 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:10:25,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:25,663 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:26,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 12:10:26,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 38 proven. 178 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 12:10:27,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:10:27,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 17 [2018-07-24 12:10:27,096 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:10:27,097 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:10:27,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:10:27,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:10:27,098 INFO L87 Difference]: Start difference. First operand 16077 states and 23696 transitions. Second operand 13 states. [2018-07-24 12:10:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:10:43,566 INFO L93 Difference]: Finished difference Result 43801 states and 69426 transitions. [2018-07-24 12:10:43,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-24 12:10:43,567 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 443 [2018-07-24 12:10:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:10:43,659 INFO L225 Difference]: With dead ends: 43801 [2018-07-24 12:10:43,660 INFO L226 Difference]: Without dead ends: 28041 [2018-07-24 12:10:43,736 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1829 GetRequests, 1782 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 12:10:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28041 states. [2018-07-24 12:10:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28041 to 26131. [2018-07-24 12:10:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26131 states. [2018-07-24 12:10:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26131 states to 26131 states and 34663 transitions. [2018-07-24 12:10:44,346 INFO L78 Accepts]: Start accepts. Automaton has 26131 states and 34663 transitions. Word has length 443 [2018-07-24 12:10:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:10:44,347 INFO L471 AbstractCegarLoop]: Abstraction has 26131 states and 34663 transitions. [2018-07-24 12:10:44,347 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:10:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 26131 states and 34663 transitions. [2018-07-24 12:10:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-07-24 12:10:44,370 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:10:44,370 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:10:44,371 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:10:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1364259652, now seen corresponding path program 1 times [2018-07-24 12:10:44,371 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:10:44,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:44,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:44,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:44,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:10:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:10:45,091 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:45,092 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:10:45,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:45,099 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:45,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:10:45,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:10:45,981 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:45,982 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:10:46,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:46,000 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:46,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:10:46,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:10:46,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:10:46,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:10:46,851 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:10:46,852 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:10:46,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:10:46,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:10:46,853 INFO L87 Difference]: Start difference. First operand 26131 states and 34663 transitions. Second operand 9 states. [2018-07-24 12:10:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:10:57,661 INFO L93 Difference]: Finished difference Result 52538 states and 70715 transitions. [2018-07-24 12:10:57,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 12:10:57,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 532 [2018-07-24 12:10:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:10:57,747 INFO L225 Difference]: With dead ends: 52538 [2018-07-24 12:10:57,747 INFO L226 Difference]: Without dead ends: 26724 [2018-07-24 12:10:57,815 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2156 GetRequests, 2133 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:10:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26724 states. [2018-07-24 12:10:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26724 to 24671. [2018-07-24 12:10:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24671 states. [2018-07-24 12:10:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24671 states to 24671 states and 29830 transitions. [2018-07-24 12:10:58,305 INFO L78 Accepts]: Start accepts. Automaton has 24671 states and 29830 transitions. Word has length 532 [2018-07-24 12:10:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:10:58,305 INFO L471 AbstractCegarLoop]: Abstraction has 24671 states and 29830 transitions. [2018-07-24 12:10:58,306 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:10:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24671 states and 29830 transitions. [2018-07-24 12:10:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2018-07-24 12:10:58,330 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:10:58,330 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:10:58,331 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:10:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1484367571, now seen corresponding path program 1 times [2018-07-24 12:10:58,331 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:10:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:58,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:58,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:10:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 294 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:10:59,089 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:59,089 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:10:59,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:59,097 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:59,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 12:12:05,888 WARN L177 SmtUtils]: Removed 62 from assertion stack [2018-07-24 12:12:05,889 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:12:06,090 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:12:06,090 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:12:06,097 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:12:06,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:12:06 BoogieIcfgContainer [2018-07-24 12:12:06,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:12:06,098 INFO L168 Benchmark]: Toolchain (without parser) took 252335.05 ms. Allocated memory was 1.6 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-24 12:12:06,099 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:12:06,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1332.64 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:06,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 265.54 ms. Allocated memory is still 1.6 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:06,103 INFO L168 Benchmark]: Boogie Preprocessor took 631.02 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 899.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:06,103 INFO L168 Benchmark]: RCFGBuilder took 6134.29 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 332.5 MB). Peak memory consumption was 332.5 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:06,104 INFO L168 Benchmark]: TraceAbstraction took 243963.93 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 12:12:06,109 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1332.64 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 265.54 ms. Allocated memory is still 1.6 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 631.02 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 899.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6134.29 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 332.5 MB). Peak memory consumption was 332.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243963.93 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 562 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 5356. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 243.8s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 150.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2015 SDtfs, 24869 SDslu, 3588 SDs, 0 SdLazy, 45259 SolverSat, 9796 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 131.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7341 GetRequests, 7108 SyntacticMatches, 31 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26131occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 8390 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 5797 NumberOfCodeBlocks, 5797 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 9299 ConstructedInterpolants, 2 QuantifiedInterpolants, 18091830 SizeOfPredicates, 30 NumberOfNonLiveVariables, 5492 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 4504/6764 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/Problem15_label07_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-12-06-124.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label07_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-12-06-124.csv Completed graceful shutdown