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/Problem17_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 13:07:34,760 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 13:07:34,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 13:07:34,776 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 13:07:34,776 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 13:07:34,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 13:07:34,779 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 13:07:34,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 13:07:34,782 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 13:07:34,783 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 13:07:34,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 13:07:34,784 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 13:07:34,785 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 13:07:34,786 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 13:07:34,787 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 13:07:34,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 13:07:34,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 13:07:34,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 13:07:34,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 13:07:34,795 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 13:07:34,796 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 13:07:34,798 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 13:07:34,800 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 13:07:34,800 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 13:07:34,801 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 13:07:34,802 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 13:07:34,803 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 13:07:34,803 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 13:07:34,804 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 13:07:34,805 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 13:07:34,806 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 13:07:34,807 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 13:07:34,807 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 13:07:34,807 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 13:07:34,808 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 13:07:34,809 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 13:07:34,809 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 [2018-08-07 13:07:34,827 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 13:07:34,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 13:07:34,829 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 13:07:34,829 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 13:07:34,829 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 13:07:34,829 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 13:07:34,830 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 13:07:34,830 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 13:07:34,830 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 13:07:34,830 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 13:07:34,830 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 13:07:34,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 13:07:34,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 13:07:34,832 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 13:07:34,832 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 13:07:34,832 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 13:07:34,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 13:07:34,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 13:07:34,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 13:07:34,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 13:07:34,835 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 13:07:34,836 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 13:07:34,836 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 13:07:34,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 13:07:34,836 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 13:07:34,836 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 13:07:34,837 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 13:07:34,837 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 13:07:34,837 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 13:07:34,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 13:07:34,837 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 13:07:34,837 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 13:07:34,838 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 13:07:34,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 13:07:34,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 13:07:34,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 13:07:34,935 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 13:07:34,935 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 13:07:34,936 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-08-07 13:07:35,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c75e80c9/18aa0df0461c42ad93044cc0e8bb7369/FLAGe8228f3b4 [2018-08-07 13:07:35,777 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 13:07:35,778 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-08-07 13:07:35,809 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c75e80c9/18aa0df0461c42ad93044cc0e8bb7369/FLAGe8228f3b4 [2018-08-07 13:07:35,826 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c75e80c9/18aa0df0461c42ad93044cc0e8bb7369 [2018-08-07 13:07:35,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 13:07:35,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 13:07:35,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 13:07:35,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 13:07:35,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 13:07:35,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 01:07:35" (1/1) ... [2018-08-07 13:07:35,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fb1261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:35, skipping insertion in model container [2018-08-07 13:07:35,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 01:07:35" (1/1) ... [2018-08-07 13:07:36,195 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 13:07:36,967 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 13:07:36,989 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 13:07:37,485 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 13:07:37,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37 WrapperNode [2018-08-07 13:07:37,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 13:07:37,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 13:07:37,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 13:07:37,703 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 13:07:37,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:37,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 13:07:38,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 13:07:38,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 13:07:38,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 13:07:38,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (1/1) ... [2018-08-07 13:07:38,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 13:07:38,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 13:07:38,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 13:07:38,944 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 13:07:38,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (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 [2018-08-07 13:07:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 13:07:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 13:07:39,020 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 [2018-08-07 13:07:39,020 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 [2018-08-07 13:07:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 13:07:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 13:07:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 13:07:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 13:07:39,021 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_output2 [2018-08-07 13:07:39,021 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_output2 [2018-08-07 13:07:50,007 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 13:07:50,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 01:07:50 BoogieIcfgContainer [2018-08-07 13:07:50,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 13:07:50,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 13:07:50,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 13:07:50,013 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 13:07:50,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 01:07:35" (1/3) ... [2018-08-07 13:07:50,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1a6b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 01:07:50, skipping insertion in model container [2018-08-07 13:07:50,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:07:37" (2/3) ... [2018-08-07 13:07:50,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1a6b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 01:07:50, skipping insertion in model container [2018-08-07 13:07:50,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 01:07:50" (3/3) ... [2018-08-07 13:07:50,017 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45_true-unreach-call.c [2018-08-07 13:07:50,028 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 13:07:50,038 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 13:07:50,100 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 13:07:50,101 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 13:07:50,101 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 13:07:50,101 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 13:07:50,101 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 13:07:50,102 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 13:07:50,102 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 13:07:50,102 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 13:07:50,102 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 13:07:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-08-07 13:07:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-08-07 13:07:50,163 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:07:50,164 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] [2018-08-07 13:07:50,165 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]=== [2018-08-07 13:07:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash -850091047, now seen corresponding path program 1 times [2018-08-07 13:07:50,174 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:07:50,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:07:50,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:07:50,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:07:50,229 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:07:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:07:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:07:50,774 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:07:50,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 13:07:50,774 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:07:50,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 13:07:50,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 13:07:50,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:07:50,799 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-08-07 13:08:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:08:02,488 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-08-07 13:08:02,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 13:08:02,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-08-07 13:08:02,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:08:02,522 INFO L225 Difference]: With dead ends: 2118 [2018-08-07 13:08:02,523 INFO L226 Difference]: Without dead ends: 1508 [2018-08-07 13:08:02,536 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:08:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-08-07 13:08:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-08-07 13:08:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-08-07 13:08:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-08-07 13:08:02,696 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 57 [2018-08-07 13:08:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:08:02,698 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-08-07 13:08:02,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 13:08:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-08-07 13:08:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-08-07 13:08:02,710 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:08:02,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:08:02,711 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]=== [2018-08-07 13:08:02,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1103404969, now seen corresponding path program 1 times [2018-08-07 13:08:02,713 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:08:02,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:02,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:02,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:02,716 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:08:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:03,406 WARN L170 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-08-07 13:08:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:03,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:08:03,547 INFO L194 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 [2018-08-07 13:08:03,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:03,568 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:08:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:03,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:08:08,242 WARN L170 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 42 [2018-08-07 13:08:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:08,352 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:08:09,357 WARN L170 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-08-07 13:08:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:09,787 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 13:08:09,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-08-07 13:08:09,788 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:08:09,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:08:09,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:08:09,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-08-07 13:08:09,792 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-08-07 13:08:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:08:36,992 INFO L93 Difference]: Finished difference Result 3453 states and 5551 transitions. [2018-08-07 13:08:36,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 13:08:36,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-08-07 13:08:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:08:37,012 INFO L225 Difference]: With dead ends: 3453 [2018-08-07 13:08:37,012 INFO L226 Difference]: Without dead ends: 2420 [2018-08-07 13:08:37,020 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-08-07 13:08:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2018-08-07 13:08:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2412. [2018-08-07 13:08:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2018-08-07 13:08:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3755 transitions. [2018-08-07 13:08:37,112 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3755 transitions. Word has length 132 [2018-08-07 13:08:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:08:37,113 INFO L480 AbstractCegarLoop]: Abstraction has 2412 states and 3755 transitions. [2018-08-07 13:08:37,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:08:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3755 transitions. [2018-08-07 13:08:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-08-07 13:08:37,119 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:08:37,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:08:37,120 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]=== [2018-08-07 13:08:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -373950294, now seen corresponding path program 1 times [2018-08-07 13:08:37,120 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:08:37,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:37,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:37,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:37,125 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:08:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:37,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:08:37,496 INFO L194 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 [2018-08-07 13:08:37,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:37,517 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:08:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:37,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:08:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:37,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:08:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:38,003 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 13:08:38,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-08-07 13:08:38,004 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:08:38,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:08:38,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:08:38,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-08-07 13:08:38,009 INFO L87 Difference]: Start difference. First operand 2412 states and 3755 transitions. Second operand 3 states. [2018-08-07 13:08:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:08:45,261 INFO L93 Difference]: Finished difference Result 6995 states and 11108 transitions. [2018-08-07 13:08:45,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:08:45,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-08-07 13:08:45,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:08:45,294 INFO L225 Difference]: With dead ends: 6995 [2018-08-07 13:08:45,294 INFO L226 Difference]: Without dead ends: 4589 [2018-08-07 13:08:45,309 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 289 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-08-07 13:08:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2018-08-07 13:08:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4588. [2018-08-07 13:08:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4588 states. [2018-08-07 13:08:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7099 transitions. [2018-08-07 13:08:45,451 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7099 transitions. Word has length 145 [2018-08-07 13:08:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:08:45,452 INFO L480 AbstractCegarLoop]: Abstraction has 4588 states and 7099 transitions. [2018-08-07 13:08:45,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:08:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7099 transitions. [2018-08-07 13:08:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-08-07 13:08:45,456 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:08:45,457 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, 2, 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] [2018-08-07 13:08:45,457 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]=== [2018-08-07 13:08:45,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1293578818, now seen corresponding path program 1 times [2018-08-07 13:08:45,458 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:08:45,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:45,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:45,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:45,461 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:08:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:45,773 WARN L170 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:08:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-08-07 13:08:46,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:08:46,249 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:08:46,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:46,260 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:08:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:46,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:08:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:46,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:08:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:46,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:08:46,812 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 13:08:46,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:46,844 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:08:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:47,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:08:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-08-07 13:08:47,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:08:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-08-07 13:08:47,890 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 13:08:47,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-08-07 13:08:47,891 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:08:47,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 13:08:47,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 13:08:47,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 13:08:47,895 INFO L87 Difference]: Start difference. First operand 4588 states and 7099 transitions. Second operand 5 states. [2018-08-07 13:08:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:08:53,022 INFO L93 Difference]: Finished difference Result 11431 states and 17855 transitions. [2018-08-07 13:08:53,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 13:08:53,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2018-08-07 13:08:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:08:53,055 INFO L225 Difference]: With dead ends: 11431 [2018-08-07 13:08:53,056 INFO L226 Difference]: Without dead ends: 6849 [2018-08-07 13:08:53,072 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 876 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-08-07 13:08:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2018-08-07 13:08:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6849. [2018-08-07 13:08:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2018-08-07 13:08:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9663 transitions. [2018-08-07 13:08:53,238 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9663 transitions. Word has length 222 [2018-08-07 13:08:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:08:53,238 INFO L480 AbstractCegarLoop]: Abstraction has 6849 states and 9663 transitions. [2018-08-07 13:08:53,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 13:08:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9663 transitions. [2018-08-07 13:08:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-08-07 13:08:53,243 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:08:53,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:08:53,244 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]=== [2018-08-07 13:08:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2017104887, now seen corresponding path program 1 times [2018-08-07 13:08:53,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:08:53,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:53,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:08:53,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:08:53,245 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:08:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:08:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:08:53,836 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:08:53,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 13:08:53,837 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:08:53,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:08:53,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:08:53,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:08:53,838 INFO L87 Difference]: Start difference. First operand 6849 states and 9663 transitions. Second operand 6 states. [2018-08-07 13:09:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:09:11,618 INFO L93 Difference]: Finished difference Result 24561 states and 36687 transitions. [2018-08-07 13:09:11,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 13:09:11,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-08-07 13:09:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:09:11,726 INFO L225 Difference]: With dead ends: 24561 [2018-08-07 13:09:11,726 INFO L226 Difference]: Without dead ends: 17718 [2018-08-07 13:09:11,763 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-08-07 13:09:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17718 states. [2018-08-07 13:09:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17718 to 17696. [2018-08-07 13:09:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17696 states. [2018-08-07 13:09:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17696 states to 17696 states and 24063 transitions. [2018-08-07 13:09:12,248 INFO L78 Accepts]: Start accepts. Automaton has 17696 states and 24063 transitions. Word has length 223 [2018-08-07 13:09:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:09:12,248 INFO L480 AbstractCegarLoop]: Abstraction has 17696 states and 24063 transitions. [2018-08-07 13:09:12,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:09:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 17696 states and 24063 transitions. [2018-08-07 13:09:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-08-07 13:09:12,254 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:09:12,255 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 13:09:12,255 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]=== [2018-08-07 13:09:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash 90857531, now seen corresponding path program 1 times [2018-08-07 13:09:12,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:09:12,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:09:12,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:12,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:09:12,257 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:09:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-08-07 13:09:12,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:09:12,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 13:09:12,459 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:09:12,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:09:12,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:09:12,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 13:09:12,461 INFO L87 Difference]: Start difference. First operand 17696 states and 24063 transitions. Second operand 3 states. [2018-08-07 13:09:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:09:18,450 INFO L93 Difference]: Finished difference Result 40251 states and 56920 transitions. [2018-08-07 13:09:18,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:09:18,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-08-07 13:09:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:09:18,574 INFO L225 Difference]: With dead ends: 40251 [2018-08-07 13:09:18,574 INFO L226 Difference]: Without dead ends: 22561 [2018-08-07 13:09:18,646 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 13:09:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22561 states. [2018-08-07 13:09:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22561 to 22554. [2018-08-07 13:09:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22554 states. [2018-08-07 13:09:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 31358 transitions. [2018-08-07 13:09:19,202 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 31358 transitions. Word has length 234 [2018-08-07 13:09:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:09:19,203 INFO L480 AbstractCegarLoop]: Abstraction has 22554 states and 31358 transitions. [2018-08-07 13:09:19,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:09:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 31358 transitions. [2018-08-07 13:09:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-08-07 13:09:19,219 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:09:19,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:09:19,220 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]=== [2018-08-07 13:09:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1985713205, now seen corresponding path program 1 times [2018-08-07 13:09:19,221 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:09:19,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:09:19,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:19,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:09:19,222 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:09:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 80 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-08-07 13:09:19,993 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:09:19,993 INFO L194 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 [2018-08-07 13:09:20,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:20,002 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:09:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:20,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:09:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-08-07 13:09:20,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:09:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:09:21,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:09:21,472 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 13:09:21,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:21,488 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:09:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:21,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:09:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-08-07 13:09:22,358 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:09:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:09:25,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 13:09:25,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 17 [2018-08-07 13:09:25,199 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 13:09:25,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-08-07 13:09:25,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-08-07 13:09:25,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-08-07 13:09:25,201 INFO L87 Difference]: Start difference. First operand 22554 states and 31358 transitions. Second operand 11 states. [2018-08-07 13:09:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:09:53,927 INFO L93 Difference]: Finished difference Result 88870 states and 139497 transitions. [2018-08-07 13:09:53,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-08-07 13:09:53,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 305 [2018-08-07 13:09:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:09:54,351 INFO L225 Difference]: With dead ends: 88870 [2018-08-07 13:09:54,351 INFO L226 Difference]: Without dead ends: 66322 [2018-08-07 13:09:54,482 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1208 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2018-08-07 13:09:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66322 states. [2018-08-07 13:09:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66322 to 60001. [2018-08-07 13:09:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60001 states. [2018-08-07 13:09:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60001 states to 60001 states and 85814 transitions. [2018-08-07 13:09:56,646 INFO L78 Accepts]: Start accepts. Automaton has 60001 states and 85814 transitions. Word has length 305 [2018-08-07 13:09:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:09:56,647 INFO L480 AbstractCegarLoop]: Abstraction has 60001 states and 85814 transitions. [2018-08-07 13:09:56,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-08-07 13:09:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 60001 states and 85814 transitions. [2018-08-07 13:09:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-08-07 13:09:56,686 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:09:56,687 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:09:56,687 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]=== [2018-08-07 13:09:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1880987668, now seen corresponding path program 1 times [2018-08-07 13:09:56,688 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:09:56,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:09:56,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:56,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:09:56,689 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:09:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:57,011 WARN L170 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:09:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 156 proven. 178 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-08-07 13:09:57,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:09:57,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:09:57,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:57,153 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:09:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:57,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:09:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-08-07 13:09:57,897 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:09:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 228 proven. 107 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-08-07 13:09:58,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:09:58,807 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 13:09:58,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:09:58,824 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:09:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:09:59,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:09:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-08-07 13:09:59,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 158 proven. 173 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 13:10:00,102 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 13:10:00,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-08-07 13:10:00,103 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:10:00,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 13:10:00,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 13:10:00,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-08-07 13:10:00,105 INFO L87 Difference]: Start difference. First operand 60001 states and 85814 transitions. Second operand 5 states. [2018-08-07 13:10:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:10:08,467 INFO L93 Difference]: Finished difference Result 120074 states and 172151 transitions. [2018-08-07 13:10:08,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 13:10:08,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 400 [2018-08-07 13:10:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:10:08,621 INFO L225 Difference]: With dead ends: 120074 [2018-08-07 13:10:08,621 INFO L226 Difference]: Without dead ends: 43786 [2018-08-07 13:10:08,806 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1608 GetRequests, 1587 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-08-07 13:10:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43786 states. [2018-08-07 13:10:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43786 to 42489. [2018-08-07 13:10:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42489 states. [2018-08-07 13:10:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42489 states to 42489 states and 53138 transitions. [2018-08-07 13:10:10,271 INFO L78 Accepts]: Start accepts. Automaton has 42489 states and 53138 transitions. Word has length 400 [2018-08-07 13:10:10,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:10:10,272 INFO L480 AbstractCegarLoop]: Abstraction has 42489 states and 53138 transitions. [2018-08-07 13:10:10,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 13:10:10,272 INFO L276 IsEmpty]: Start isEmpty. Operand 42489 states and 53138 transitions. [2018-08-07 13:10:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-08-07 13:10:10,287 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:10:10,288 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:10:10,288 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:10:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1071798165, now seen corresponding path program 1 times [2018-08-07 13:10:10,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:10:10,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:10,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:10,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:10,290 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:10:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 156 proven. 192 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-08-07 13:10:11,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:10:11,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:10:11,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:11,137 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:10:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:11,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:10:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-08-07 13:10:11,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-08-07 13:10:11,662 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 13:10:11,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-08-07 13:10:11,662 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:10:11,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:10:11,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:10:11,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-08-07 13:10:11,663 INFO L87 Difference]: Start difference. First operand 42489 states and 53138 transitions. Second operand 3 states. [2018-08-07 13:10:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:10:19,375 INFO L93 Difference]: Finished difference Result 96859 states and 122970 transitions. [2018-08-07 13:10:19,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:10:19,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 413 [2018-08-07 13:10:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:10:20,354 INFO L225 Difference]: With dead ends: 96859 [2018-08-07 13:10:20,354 INFO L226 Difference]: Without dead ends: 54381 [2018-08-07 13:10:20,418 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-08-07 13:10:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54381 states. [2018-08-07 13:10:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54381 to 54360. [2018-08-07 13:10:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54360 states. [2018-08-07 13:10:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54360 states to 54360 states and 67485 transitions. [2018-08-07 13:10:21,371 INFO L78 Accepts]: Start accepts. Automaton has 54360 states and 67485 transitions. Word has length 413 [2018-08-07 13:10:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:10:21,372 INFO L480 AbstractCegarLoop]: Abstraction has 54360 states and 67485 transitions. [2018-08-07 13:10:21,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:10:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 54360 states and 67485 transitions. [2018-08-07 13:10:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-08-07 13:10:21,444 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:10:21,444 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:10:21,445 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:10:21,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1811383115, now seen corresponding path program 1 times [2018-08-07 13:10:21,445 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:10:21,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:21,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:21,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:21,446 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:10:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-08-07 13:10:22,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:10:22,115 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:10:22,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:22,130 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:10:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:22,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:10:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-08-07 13:10:23,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-08-07 13:10:24,128 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 13:10:24,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-08-07 13:10:24,128 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:10:24,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:10:24,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:10:24,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 13:10:24,131 INFO L87 Difference]: Start difference. First operand 54360 states and 67485 transitions. Second operand 3 states. [2018-08-07 13:10:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:10:28,760 INFO L93 Difference]: Finished difference Result 118858 states and 149877 transitions. [2018-08-07 13:10:28,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:10:28,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 729 [2018-08-07 13:10:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:10:28,926 INFO L225 Difference]: With dead ends: 118858 [2018-08-07 13:10:28,926 INFO L226 Difference]: Without dead ends: 64509 [2018-08-07 13:10:29,005 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1459 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 13:10:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64509 states. [2018-08-07 13:10:29,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64509 to 64503. [2018-08-07 13:10:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64503 states. [2018-08-07 13:10:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64503 states to 64503 states and 80393 transitions. [2018-08-07 13:10:31,218 INFO L78 Accepts]: Start accepts. Automaton has 64503 states and 80393 transitions. Word has length 729 [2018-08-07 13:10:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:10:31,219 INFO L480 AbstractCegarLoop]: Abstraction has 64503 states and 80393 transitions. [2018-08-07 13:10:31,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:10:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 64503 states and 80393 transitions. [2018-08-07 13:10:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-08-07 13:10:31,268 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:10:31,269 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:10:31,269 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:10:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1695791596, now seen corresponding path program 1 times [2018-08-07 13:10:31,270 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:10:31,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:31,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:31,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:31,271 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:10:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2018-08-07 13:10:31,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:10:31,918 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:10:31,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:31,935 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:10:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:32,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:10:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2018-08-07 13:10:32,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2018-08-07 13:10:33,584 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 13:10:33,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-08-07 13:10:33,585 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:10:33,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:10:33,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:10:33,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:10:33,586 INFO L87 Difference]: Start difference. First operand 64503 states and 80393 transitions. Second operand 3 states. [2018-08-07 13:10:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:10:39,682 INFO L93 Difference]: Finished difference Result 155326 states and 195020 transitions. [2018-08-07 13:10:39,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:10:39,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 753 [2018-08-07 13:10:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:10:39,918 INFO L225 Difference]: With dead ends: 155326 [2018-08-07 13:10:39,918 INFO L226 Difference]: Without dead ends: 90834 [2018-08-07 13:10:40,022 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1508 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:10:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90834 states. [2018-08-07 13:10:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90834 to 90377. [2018-08-07 13:10:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90377 states. [2018-08-07 13:10:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90377 states to 90377 states and 112005 transitions. [2018-08-07 13:10:42,184 INFO L78 Accepts]: Start accepts. Automaton has 90377 states and 112005 transitions. Word has length 753 [2018-08-07 13:10:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:10:42,186 INFO L480 AbstractCegarLoop]: Abstraction has 90377 states and 112005 transitions. [2018-08-07 13:10:42,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:10:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 90377 states and 112005 transitions. [2018-08-07 13:10:42,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2018-08-07 13:10:42,282 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:10:42,283 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:10:42,283 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:10:42,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2092432755, now seen corresponding path program 1 times [2018-08-07 13:10:42,284 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:10:42,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:42,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:42,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:42,285 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:10:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-08-07 13:10:43,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:10:43,139 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:10:43,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:43,147 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:10:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:43,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:10:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 769 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-08-07 13:10:44,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 222 proven. 8 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-08-07 13:10:44,521 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 13:10:44,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-08-07 13:10:44,522 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:10:44,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:10:44,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:10:44,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:10:44,527 INFO L87 Difference]: Start difference. First operand 90377 states and 112005 transitions. Second operand 3 states. [2018-08-07 13:10:47,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:10:47,659 INFO L93 Difference]: Finished difference Result 165700 states and 204112 transitions. [2018-08-07 13:10:47,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:10:47,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 839 [2018-08-07 13:10:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:10:47,835 INFO L225 Difference]: With dead ends: 165700 [2018-08-07 13:10:47,835 INFO L226 Difference]: Without dead ends: 75332 [2018-08-07 13:10:47,929 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1681 GetRequests, 1673 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:10:47,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75332 states. [2018-08-07 13:10:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75332 to 74689. [2018-08-07 13:10:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74689 states. [2018-08-07 13:10:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74689 states to 74689 states and 89531 transitions. [2018-08-07 13:10:48,887 INFO L78 Accepts]: Start accepts. Automaton has 74689 states and 89531 transitions. Word has length 839 [2018-08-07 13:10:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:10:48,889 INFO L480 AbstractCegarLoop]: Abstraction has 74689 states and 89531 transitions. [2018-08-07 13:10:48,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:10:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 74689 states and 89531 transitions. [2018-08-07 13:10:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2018-08-07 13:10:48,967 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:10:48,968 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:10:48,968 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:10:48,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1623096804, now seen corresponding path program 1 times [2018-08-07 13:10:48,969 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:10:48,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:48,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:48,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:10:48,970 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:10:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 207 proven. 423 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-08-07 13:10:50,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:10:50,620 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:10:50,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:50,628 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:10:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:50,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:10:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-08-07 13:10:51,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-08-07 13:10:52,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:10:52,995 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 13:10:53,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:10:53,013 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:10:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:10:53,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:10:54,846 WARN L1032 $PredicateComparison]: unable to prove that (or (exists ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a28~0_BEFORE_CALL_2 Int)) (and (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a28~0 (+ (div (+ (mod v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a28~0_BEFORE_CALL_2 299849) 300149) 5) 2557)) (<= 0 v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a28~0_BEFORE_CALL_2))) (exists ((v_prenex_20 Int)) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a28~0 (+ (div (+ (mod v_prenex_20 299849) 300) 5) 2557))) (exists ((v_prenex_19 Int)) (let ((.cse0 (mod v_prenex_19 299849))) (and (= .cse0 0) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a28~0 (+ (div (+ .cse0 300149) 5) 2557)))))) is different from true [2018-08-07 13:10:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 576 proven. 46 refuted. 0 times theorem prover too weak. 256 trivial. 7 not checked. [2018-08-07 13:10:56,406 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:10:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-08-07 13:10:57,181 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 13:10:57,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6, 8, 6] total 29 [2018-08-07 13:10:57,183 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 13:10:57,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-08-07 13:10:57,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-08-07 13:10:57,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=627, Unknown=2, NotChecked=52, Total=812 [2018-08-07 13:10:57,186 INFO L87 Difference]: Start difference. First operand 74689 states and 89531 transitions. Second operand 15 states. [2018-08-07 13:11:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:11:17,084 INFO L93 Difference]: Finished difference Result 155665 states and 191223 transitions. [2018-08-07 13:11:17,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-08-07 13:11:17,084 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 891 [2018-08-07 13:11:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:11:17,409 INFO L225 Difference]: With dead ends: 155665 [2018-08-07 13:11:17,409 INFO L226 Difference]: Without dead ends: 80987 [2018-08-07 13:11:17,552 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 3598 GetRequests, 3557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=265, Invalid=1143, Unknown=2, NotChecked=72, Total=1482 [2018-08-07 13:11:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80987 states. [2018-08-07 13:11:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80987 to 72348. [2018-08-07 13:11:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72348 states. [2018-08-07 13:11:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72348 states to 72348 states and 85206 transitions. [2018-08-07 13:11:19,058 INFO L78 Accepts]: Start accepts. Automaton has 72348 states and 85206 transitions. Word has length 891 [2018-08-07 13:11:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:11:19,059 INFO L480 AbstractCegarLoop]: Abstraction has 72348 states and 85206 transitions. [2018-08-07 13:11:19,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-08-07 13:11:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 72348 states and 85206 transitions. [2018-08-07 13:11:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2018-08-07 13:11:19,136 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:11:19,137 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:11:19,137 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:11:19,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1202235276, now seen corresponding path program 1 times [2018-08-07 13:11:19,138 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:11:19,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:11:19,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:11:19,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:11:19,139 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:11:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:11:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 811 proven. 6 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-08-07 13:11:20,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:11:20,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:11:20,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:11:20,701 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Received shutdown request... [2018-08-07 13:11:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:11:21,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:11:21,034 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-08-07 13:11:21,236 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:11:21,236 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 13:11:21,241 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 13:11:21,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 01:11:21 BoogieIcfgContainer [2018-08-07 13:11:21,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 13:11:21,243 INFO L168 Benchmark]: Toolchain (without parser) took 225403.88 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 343.8 MB in the end (delta: 1.1 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-08-07 13:11:21,244 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-08-07 13:11:21,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1860.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-08-07 13:11:21,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 300.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-08-07 13:11:21,246 INFO L168 Benchmark]: Boogie Preprocessor took 940.05 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-08-07 13:11:21,246 INFO L168 Benchmark]: RCFGBuilder took 11065.03 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 503.8 MB). Peak memory consumption was 503.8 MB. Max. memory is 7.1 GB. [2018-08-07 13:11:21,248 INFO L168 Benchmark]: TraceAbstraction took 211232.20 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 343.8 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-08-07 13:11:21,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1860.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 300.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 940.05 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11065.03 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 503.8 MB). Peak memory consumption was 503.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211232.20 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 343.8 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 158). Cancelled while BasicCegarLoop was analyzing trace of length 908 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 211.1s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 157.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5087 SDtfs, 25822 SDslu, 2777 SDs, 0 SdLazy, 38329 SolverSat, 9077 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 134.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13413 GetRequests, 13252 SyntacticMatches, 37 SemanticMatches, 124 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90377occurred in iteration=11, 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: 12.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 17891 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 31.0s InterpolantComputationTime, 11990 NumberOfCodeBlocks, 11990 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 18596 ConstructedInterpolants, 389 QuantifiedInterpolants, 26383464 SizeOfPredicates, 26 NumberOfNonLiveVariables, 9907 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 41 InterpolantComputations, 13 PerfectInterpolantSequences, 16805/18322 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/Problem17_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_13-11-21-270.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_13-11-21-270.csv Completed graceful shutdown