java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:30:54,965 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:30:54,967 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:30:54,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:30:54,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:30:54,981 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:30:54,982 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:30:54,984 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:30:54,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:30:54,988 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:30:54,989 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:30:54,989 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:30:54,990 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:30:54,991 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:30:54,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:30:54,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:30:54,994 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:30:54,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:30:54,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:30:54,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:30:55,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:30:55,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:30:55,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-10 11:30:55,014 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:30:55,015 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:30:55,015 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:30:55,016 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:30:55,016 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 [2018-09-10 11:30:55,040 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:30:55,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:30:55,042 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:30:55,042 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:30:55,042 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:30:55,042 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:30:55,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:30:55,043 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:30:55,043 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:30:55,043 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:30:55,043 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:30:55,046 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:30:55,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:30:55,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:30:55,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:30:55,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:30:55,047 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:30:55,047 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:30:55,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:30:55,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:30:55,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:30:55,048 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:30:55,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:30:55,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:30:55,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:30:55,051 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:30:55,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:30:55,051 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:30:55,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:30:55,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:30:55,052 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:30:55,052 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:30:55,052 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:30:55,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:30:55,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:30:55,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:30:55,131 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:30:55,132 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:30:55,133 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-09-10 11:30:55,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c03246e/dec3b10e9c874160abe5526465398028/FLAGed22a3855 [2018-09-10 11:30:55,746 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:30:55,747 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-09-10 11:30:55,778 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c03246e/dec3b10e9c874160abe5526465398028/FLAGed22a3855 [2018-09-10 11:30:55,807 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c03246e/dec3b10e9c874160abe5526465398028 [2018-09-10 11:30:55,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:30:55,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:30:55,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:30:55,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:30:55,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:30:55,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:30:55" (1/1) ... [2018-09-10 11:30:55,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8c8d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:55, skipping insertion in model container [2018-09-10 11:30:55,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:30:55" (1/1) ... [2018-09-10 11:30:56,125 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:30:56,397 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:30:56,415 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:30:56,535 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:30:56,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56 WrapperNode [2018-09-10 11:30:56,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:30:56,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:30:56,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:30:56,582 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:30:56,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:30:56,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:30:56,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:30:56,687 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:30:56,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (1/1) ... [2018-09-10 11:30:56,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:30:56,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:30:56,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:30:56,967 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:30:56,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (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 [2018-09-10 11:30:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:30:57,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:30:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:30:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:30:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:30:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:30:57,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:30:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:31:00,654 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:31:00,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:31:00 BoogieIcfgContainer [2018-09-10 11:31:00,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:31:00,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:31:00,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:31:00,660 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:31:00,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:30:55" (1/3) ... [2018-09-10 11:31:00,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bafe06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:31:00, skipping insertion in model container [2018-09-10 11:31:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:30:56" (2/3) ... [2018-09-10 11:31:00,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bafe06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:31:00, skipping insertion in model container [2018-09-10 11:31:00,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:31:00" (3/3) ... [2018-09-10 11:31:00,665 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label11_true-unreach-call.c [2018-09-10 11:31:00,675 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:31:00,687 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:31:00,738 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:31:00,739 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:31:00,739 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:31:00,739 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:31:00,739 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:31:00,740 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:31:00,740 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:31:00,740 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:31:00,740 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:31:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-10 11:31:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-10 11:31:00,788 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:00,789 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:31:00,790 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1604912700, now seen corresponding path program 1 times [2018-09-10 11:31:00,798 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:00,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:00,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:00,848 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:01,269 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:31:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:01,349 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:31:01,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:31:01,349 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:31:01,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:31:01,375 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:31:01,375 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:31:01,379 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-09-10 11:31:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:05,053 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-09-10 11:31:05,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:31:05,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-09-10 11:31:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:05,078 INFO L225 Difference]: With dead ends: 574 [2018-09-10 11:31:05,078 INFO L226 Difference]: Without dead ends: 356 [2018-09-10 11:31:05,085 INFO L604 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 [2018-09-10 11:31:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-09-10 11:31:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-09-10 11:31:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-10 11:31:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 612 transitions. [2018-09-10 11:31:05,175 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 612 transitions. Word has length 68 [2018-09-10 11:31:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:05,176 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 612 transitions. [2018-09-10 11:31:05,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:31:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 612 transitions. [2018-09-10 11:31:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-10 11:31:05,186 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:05,187 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:31:05,187 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:05,188 INFO L82 PathProgramCache]: Analyzing trace with hash 28707380, now seen corresponding path program 1 times [2018-09-10 11:31:05,188 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:05,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:05,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:05,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:05,190 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:05,622 WARN L175 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:31:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:31:05,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:05,803 INFO L197 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 [2018-09-10 11:31:05,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:05,818 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:05,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:06,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:06,218 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:31:06,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-10 11:31:06,219 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:31:06,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:31:06,221 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:31:06,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:31:06,221 INFO L87 Difference]: Start difference. First operand 356 states and 612 transitions. Second operand 3 states. [2018-09-10 11:31:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:07,815 INFO L93 Difference]: Finished difference Result 994 states and 1779 transitions. [2018-09-10 11:31:07,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:31:07,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2018-09-10 11:31:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:07,829 INFO L225 Difference]: With dead ends: 994 [2018-09-10 11:31:07,829 INFO L226 Difference]: Without dead ends: 644 [2018-09-10 11:31:07,833 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 291 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:31:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-09-10 11:31:07,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-09-10 11:31:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-09-10 11:31:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1057 transitions. [2018-09-10 11:31:07,882 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1057 transitions. Word has length 146 [2018-09-10 11:31:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:07,883 INFO L480 AbstractCegarLoop]: Abstraction has 644 states and 1057 transitions. [2018-09-10 11:31:07,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:31:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1057 transitions. [2018-09-10 11:31:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-10 11:31:07,889 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:07,889 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:31:07,889 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:07,890 INFO L82 PathProgramCache]: Analyzing trace with hash 633419456, now seen corresponding path program 1 times [2018-09-10 11:31:07,890 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:07,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:07,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:07,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:07,892 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:08,193 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:31:08,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:31:08,194 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:31:08,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:31:08,195 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:31:08,195 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:31:08,195 INFO L87 Difference]: Start difference. First operand 644 states and 1057 transitions. Second operand 5 states. [2018-09-10 11:31:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:11,968 INFO L93 Difference]: Finished difference Result 1767 states and 3000 transitions. [2018-09-10 11:31:11,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:31:11,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2018-09-10 11:31:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:11,978 INFO L225 Difference]: With dead ends: 1767 [2018-09-10 11:31:11,979 INFO L226 Difference]: Without dead ends: 1129 [2018-09-10 11:31:11,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:31:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2018-09-10 11:31:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1121. [2018-09-10 11:31:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2018-09-10 11:31:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1840 transitions. [2018-09-10 11:31:12,059 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1840 transitions. Word has length 188 [2018-09-10 11:31:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:12,060 INFO L480 AbstractCegarLoop]: Abstraction has 1121 states and 1840 transitions. [2018-09-10 11:31:12,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:31:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1840 transitions. [2018-09-10 11:31:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-09-10 11:31:12,069 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:12,069 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:31:12,070 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:12,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598705, now seen corresponding path program 1 times [2018-09-10 11:31:12,070 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:12,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:12,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:12,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:12,072 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:12,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:12,930 INFO L197 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 [2018-09-10 11:31:12,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:12,941 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:13,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:13,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:13,366 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 11:31:13,490 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 11:31:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:13,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:13,772 INFO L197 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 [2018-09-10 11:31:13,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:13,820 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:14,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:14,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:15,181 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:31:15,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 20 [2018-09-10 11:31:15,181 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:31:15,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 11:31:15,182 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 11:31:15,184 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:31:15,184 INFO L87 Difference]: Start difference. First operand 1121 states and 1840 transitions. Second operand 14 states. [2018-09-10 11:31:16,790 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2018-09-10 11:31:17,739 WARN L175 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2018-09-10 11:31:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:26,313 INFO L93 Difference]: Finished difference Result 3544 states and 6887 transitions. [2018-09-10 11:31:26,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-10 11:31:26,313 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 259 [2018-09-10 11:31:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:26,341 INFO L225 Difference]: With dead ends: 3544 [2018-09-10 11:31:26,341 INFO L226 Difference]: Without dead ends: 2573 [2018-09-10 11:31:26,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1047 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=783, Invalid=2523, Unknown=0, NotChecked=0, Total=3306 [2018-09-10 11:31:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2018-09-10 11:31:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2282. [2018-09-10 11:31:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2018-09-10 11:31:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3365 transitions. [2018-09-10 11:31:26,472 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3365 transitions. Word has length 259 [2018-09-10 11:31:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:26,472 INFO L480 AbstractCegarLoop]: Abstraction has 2282 states and 3365 transitions. [2018-09-10 11:31:26,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 11:31:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3365 transitions. [2018-09-10 11:31:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-10 11:31:26,482 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:26,482 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:31:26,483 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:26,483 INFO L82 PathProgramCache]: Analyzing trace with hash -220726540, now seen corresponding path program 1 times [2018-09-10 11:31:26,483 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:26,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:26,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:26,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:26,484 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:26,745 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:31:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 122 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:31:27,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:27,164 INFO L197 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 [2018-09-10 11:31:27,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:27,181 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:27,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:31:27,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 122 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:31:27,895 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:31:27,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:31:27,895 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:31:27,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:31:27,896 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:31:27,896 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:31:27,896 INFO L87 Difference]: Start difference. First operand 2282 states and 3365 transitions. Second operand 5 states. [2018-09-10 11:31:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:29,337 INFO L93 Difference]: Finished difference Result 4477 states and 6980 transitions. [2018-09-10 11:31:29,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:31:29,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-09-10 11:31:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:29,356 INFO L225 Difference]: With dead ends: 4477 [2018-09-10 11:31:29,356 INFO L226 Difference]: Without dead ends: 2345 [2018-09-10 11:31:29,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 562 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:31:29,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2018-09-10 11:31:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2282. [2018-09-10 11:31:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2018-09-10 11:31:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3173 transitions. [2018-09-10 11:31:29,450 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3173 transitions. Word has length 284 [2018-09-10 11:31:29,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:29,451 INFO L480 AbstractCegarLoop]: Abstraction has 2282 states and 3173 transitions. [2018-09-10 11:31:29,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:31:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3173 transitions. [2018-09-10 11:31:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-10 11:31:29,465 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:29,465 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:31:29,466 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash -745570144, now seen corresponding path program 1 times [2018-09-10 11:31:29,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:29,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:29,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:29,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:29,468 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:31:29,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:29,802 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:31:29,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:29,818 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:29,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:31:30,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:31:30,328 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:31:30,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:31:30,328 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:31:30,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:31:30,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:31:30,329 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:31:30,329 INFO L87 Difference]: Start difference. First operand 2282 states and 3173 transitions. Second operand 5 states. [2018-09-10 11:31:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:32,802 INFO L93 Difference]: Finished difference Result 5486 states and 7866 transitions. [2018-09-10 11:31:32,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:31:32,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2018-09-10 11:31:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:32,822 INFO L225 Difference]: With dead ends: 5486 [2018-09-10 11:31:32,822 INFO L226 Difference]: Without dead ends: 3354 [2018-09-10 11:31:32,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 614 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:31:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2018-09-10 11:31:32,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3233. [2018-09-10 11:31:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2018-09-10 11:31:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4284 transitions. [2018-09-10 11:31:32,939 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4284 transitions. Word has length 310 [2018-09-10 11:31:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:32,940 INFO L480 AbstractCegarLoop]: Abstraction has 3233 states and 4284 transitions. [2018-09-10 11:31:32,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:31:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4284 transitions. [2018-09-10 11:31:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-10 11:31:32,958 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:32,958 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:31:32,958 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1930668300, now seen corresponding path program 1 times [2018-09-10 11:31:32,959 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:32,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:32,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:32,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:32,960 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:33,329 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:31:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 189 proven. 154 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 11:31:33,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:33,564 INFO L197 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 [2018-09-10 11:31:33,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:33,574 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:33,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:31:33,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 264 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 11:31:34,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:34,308 INFO L197 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 [2018-09-10 11:31:34,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:34,341 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:34,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:31:35,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 264 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 11:31:35,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:31:35,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 15 [2018-09-10 11:31:35,516 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:31:35,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:31:35,518 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:31:35,518 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-10 11:31:35,519 INFO L87 Difference]: Start difference. First operand 3233 states and 4284 transitions. Second operand 11 states. [2018-09-10 11:31:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:31:39,671 INFO L93 Difference]: Finished difference Result 7698 states and 10473 transitions. [2018-09-10 11:31:39,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:31:39,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 346 [2018-09-10 11:31:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:31:39,682 INFO L225 Difference]: With dead ends: 7698 [2018-09-10 11:31:39,682 INFO L226 Difference]: Without dead ends: 2242 [2018-09-10 11:31:39,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1417 GetRequests, 1384 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2018-09-10 11:31:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2018-09-10 11:31:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1582. [2018-09-10 11:31:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2018-09-10 11:31:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1819 transitions. [2018-09-10 11:31:39,756 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1819 transitions. Word has length 346 [2018-09-10 11:31:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:31:39,757 INFO L480 AbstractCegarLoop]: Abstraction has 1582 states and 1819 transitions. [2018-09-10 11:31:39,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:31:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1819 transitions. [2018-09-10 11:31:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-10 11:31:39,766 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:31:39,766 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:31:39,767 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:31:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash -341971068, now seen corresponding path program 1 times [2018-09-10 11:31:39,767 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:31:39,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:39,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:39,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:31:39,768 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:31:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 262 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:31:40,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:31:40,856 INFO L197 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 [2018-09-10 11:31:40,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:31:40,868 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:31:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:31:40,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:31:46,286 WARN L175 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 179 DAG size of output: 33 [2018-09-10 11:31:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:31:46,723 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:31:47,337 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-10 11:31:47,457 WARN L175 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-10 11:31:48,152 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:31:48,740 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 304 [2018-09-10 11:33:26,054 WARN L177 XnfTransformerHelper]: Simplifying conjuction of 27300 disjunctions. This might take some time... [2018-09-10 11:33:26,371 INFO L193 XnfTransformerHelper]: Simplified to conjuction of 22 disjunctions. [2018-09-10 11:33:26,664 WARN L175 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-09-10 11:33:26,670 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,674 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,678 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,683 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,687 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,695 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,703 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,707 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,723 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,727 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,731 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,734 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,742 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,746 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,750 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,754 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,762 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,766 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,770 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,781 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,785 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,789 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,792 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,796 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,800 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,804 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,808 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,811 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,819 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,823 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,827 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,831 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,839 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,847 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,850 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,854 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,858 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,862 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,870 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,874 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,885 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,893 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,901 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,909 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,913 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,918 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,922 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,933 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,937 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,945 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,949 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,952 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,956 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,960 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,965 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,969 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,973 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,977 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,981 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,993 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:26,997 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,006 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,014 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,023 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,039 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,055 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,063 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,067 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,071 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,075 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,079 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,083 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,087 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:27,095 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 189 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:33:28,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:33:28,639 INFO L197 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 [2018-09-10 11:33:28,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:28,656 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:33:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:28,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:33:31,261 WARN L175 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2018-09-10 11:33:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:33:31,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:33:31,866 WARN L175 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 11:33:32,028 WARN L175 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 11:33:32,313 WARN L175 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-09-10 11:33:33,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,110 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2018-09-10 11:33:33,267 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,275 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,279 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,282 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,294 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,297 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,301 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,316 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,323 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,326 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,330 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,334 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,337 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,341 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,348 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,351 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,355 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,358 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,366 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,369 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,373 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,384 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,387 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,391 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,394 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,398 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,405 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,413 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,417 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,420 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,427 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,431 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,434 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,438 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,445 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,448 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,452 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,455 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,459 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,462 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,466 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,469 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,472 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,482 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,489 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,493 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,497 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,504 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,508 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,519 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,523 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,526 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,530 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,533 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,537 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,541 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,555 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,563 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,570 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,574 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,578 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,585 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,588 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,595 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,599 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,603 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,606 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,610 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,617 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,625 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,629 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,633 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,636 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,640 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,643 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,651 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:33,658 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:33:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 189 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:33:34,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:33:34,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8, 8, 8, 8] total 38 [2018-09-10 11:33:34,813 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:33:34,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-10 11:33:34,817 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-10 11:33:34,817 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2018-09-10 11:33:34,818 INFO L87 Difference]: Start difference. First operand 1582 states and 1819 transitions. Second operand 26 states. [2018-09-10 11:33:40,530 WARN L175 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-09-10 11:33:40,726 WARN L175 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2018-09-10 11:33:46,173 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-09-10 11:33:53,625 WARN L175 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-09-10 11:33:56,326 WARN L175 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-09-10 11:33:59,230 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-09-10 11:34:01,536 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-09-10 11:34:04,168 WARN L175 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-09-10 11:34:21,820 WARN L175 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 Received shutdown request... [2018-09-10 11:34:30,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-10 11:34:30,974 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:34:30,979 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:34:30,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:34:30 BoogieIcfgContainer [2018-09-10 11:34:30,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:34:30,981 INFO L168 Benchmark]: Toolchain (without parser) took 215160.11 ms. Allocated memory was 1.5 GB in the beginning and 6.7 GB in the end (delta: 5.1 GB). Free memory was 1.4 GB in the beginning and 4.3 GB in the end (delta: -2.8 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-10 11:34:30,982 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:34:30,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.09 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:34:30,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.17 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:34:30,984 INFO L168 Benchmark]: Boogie Preprocessor took 279.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:34:30,985 INFO L168 Benchmark]: RCFGBuilder took 3689.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.7 MB). Peak memory consumption was 109.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:34:30,985 INFO L168 Benchmark]: TraceAbstraction took 210323.20 ms. Allocated memory was 2.3 GB in the beginning and 6.7 GB in the end (delta: 4.3 GB). Free memory was 2.1 GB in the beginning and 4.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-10 11:34:30,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.09 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 105.17 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 279.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3689.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.7 MB). Peak memory consumption was 109.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210323.20 ms. Allocated memory was 2.3 GB in the beginning and 6.7 GB in the end (delta: 4.3 GB). Free memory was 2.1 GB in the beginning and 4.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (1582states) and FLOYD_HOARE automaton (currently 44 states, 26 states before enhancement), while ReachableStatesComputation was computing reachable states (1697 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 210.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 84.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 745 SDtfs, 9584 SDslu, 1314 SDs, 0 SdLazy, 14266 SolverSat, 3182 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 69.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5638 GetRequests, 5414 SyntacticMatches, 34 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2939 ImplicationChecksByTransitivity, 24.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3233occurred in iteration=6, 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: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1143 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 121.9s InterpolantComputationTime, 4697 NumberOfCodeBlocks, 4697 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7385 ConstructedInterpolants, 252 QuantifiedInterpolants, 16638692 SizeOfPredicates, 11 NumberOfNonLiveVariables, 4378 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 5449/6959 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/Problem10_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-34-31-007.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-34-31-007.csv Completed graceful shutdown