java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:48:45,002 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:48:45,004 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:48:45,016 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:48:45,016 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:48:45,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:48:45,019 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:48:45,021 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:48:45,022 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:48:45,023 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:48:45,024 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:48:45,024 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:48:45,025 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:48:45,026 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:48:45,027 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:48:45,028 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:48:45,029 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:48:45,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:48:45,033 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:48:45,035 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:48:45,036 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:48:45,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:48:45,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:48:45,040 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:48:45,040 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:48:45,041 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:48:45,042 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:48:45,043 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:48:45,043 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:48:45,044 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:48:45,045 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:48:45,045 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:48:45,046 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:48:45,046 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:48:45,047 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:48:45,048 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:48:45,049 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:48:45,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:48:45,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:48:45,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:48:45,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:48:45,075 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:48:45,076 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:48:45,076 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:48:45,076 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:48:45,076 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:48:45,076 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:48:45,077 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:48:45,077 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:48:45,078 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:48:45,078 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:48:45,078 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:48:45,078 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:48:45,079 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:48:45,079 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:48:45,079 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:48:45,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:48:45,080 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:48:45,080 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:48:45,080 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:48:45,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:48:45,080 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:48:45,081 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:48:45,081 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:48:45,081 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:48:45,082 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:48:45,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:48:45,083 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:48:45,083 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:48:45,084 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:48:45,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:48:45,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:48:45,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:48:45,154 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:48:45,155 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:48:45,155 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-07-24 11:48:45,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddeb45f56/c7d97739b5ec4884a49a69e38d0869bf/FLAG5f1b68747 [2018-07-24 11:48:45,998 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:48:45,998 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-07-24 11:48:46,041 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddeb45f56/c7d97739b5ec4884a49a69e38d0869bf/FLAG5f1b68747 [2018-07-24 11:48:46,058 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddeb45f56/c7d97739b5ec4884a49a69e38d0869bf [2018-07-24 11:48:46,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:48:46,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:48:46,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:48:46,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:48:46,086 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:48:46,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:48:46" (1/1) ... [2018-07-24 11:48:46,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3036c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:46, skipping insertion in model container [2018-07-24 11:48:46,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:48:46" (1/1) ... [2018-07-24 11:48:46,440 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:48:47,438 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:48:47,456 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:48:48,127 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:48:48,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48 WrapperNode [2018-07-24 11:48:48,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:48:48,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:48:48,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:48:48,387 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:48:48,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:48,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:48,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:48:48,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:48:48,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:48:48,670 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:48:49,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... [2018-07-24 11:48:49,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:48:49,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:48:49,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:48:49,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:48:49,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:48:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:48:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:48:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:48:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:48:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:48:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:48:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:48:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:48:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:48:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:48:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:48:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:48:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:48:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:48:58,842 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:48:58,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:48:58 BoogieIcfgContainer [2018-07-24 11:48:58,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:48:58,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:48:58,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:48:58,848 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:48:58,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:48:46" (1/3) ... [2018-07-24 11:48:58,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a7c3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:48:58, skipping insertion in model container [2018-07-24 11:48:58,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:48:48" (2/3) ... [2018-07-24 11:48:58,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a7c3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:48:58, skipping insertion in model container [2018-07-24 11:48:58,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:48:58" (3/3) ... [2018-07-24 11:48:58,852 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08_false-unreach-call.c [2018-07-24 11:48:58,869 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:48:58,882 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:48:58,941 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:48:58,942 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:48:58,942 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:48:58,942 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:48:58,943 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:48:58,943 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:48:58,943 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:48:58,943 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:48:58,943 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:48:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 11:48:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-24 11:48:58,994 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:48:58,995 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:48:58,996 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:48:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1026779196, now seen corresponding path program 1 times [2018-07-24 11:48:59,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:48:59,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:48:59,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:48:59,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:48:59,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:48:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:48:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:48:59,523 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:48:59,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:48:59,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:48:59,712 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:48:59,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:48:59,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:48:59,741 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-07-24 11:49:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:49:13,563 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-07-24 11:49:13,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:49:13,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-07-24 11:49:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:49:13,620 INFO L225 Difference]: With dead ends: 3234 [2018-07-24 11:49:13,620 INFO L226 Difference]: Without dead ends: 2388 [2018-07-24 11:49:13,633 INFO L573 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 [2018-07-24 11:49:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-07-24 11:49:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-07-24 11:49:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-07-24 11:49:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-07-24 11:49:13,837 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 36 [2018-07-24 11:49:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:49:13,838 INFO L471 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-07-24 11:49:13,838 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:49:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-07-24 11:49:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-24 11:49:13,855 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:49:13,856 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:49:13,856 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:49:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash -686410130, now seen corresponding path program 1 times [2018-07-24 11:49:13,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:49:13,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:13,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:13,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:13,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:49:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:49:14,308 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:49:14,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:49:14,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:49:14,311 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:49:14,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:49:14,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:49:14,311 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-07-24 11:49:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:49:29,022 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-07-24 11:49:29,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:49:29,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-07-24 11:49:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:49:29,071 INFO L225 Difference]: With dead ends: 9453 [2018-07-24 11:49:29,072 INFO L226 Difference]: Without dead ends: 7071 [2018-07-24 11:49:29,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:49:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-07-24 11:49:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-07-24 11:49:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-07-24 11:49:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-07-24 11:49:29,286 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 136 [2018-07-24 11:49:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:49:29,290 INFO L471 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-07-24 11:49:29,290 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:49:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-07-24 11:49:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-24 11:49:29,306 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:49:29,307 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:49:29,307 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:49:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1907408214, now seen corresponding path program 1 times [2018-07-24 11:49:29,307 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:49:29,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:29,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:29,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:29,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:49:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 11:49:29,649 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:49:29,649 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:49:29,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:29,661 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:49:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:29,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:49:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:49:29,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:49:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:49:30,253 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:49:30,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 11:49:30,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:49:30,254 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:49:30,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:49:30,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:49:30,255 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 3 states. [2018-07-24 11:49:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:49:37,131 INFO L93 Difference]: Finished difference Result 20924 states and 32049 transitions. [2018-07-24 11:49:37,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:49:37,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-07-24 11:49:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:49:37,210 INFO L225 Difference]: With dead ends: 20924 [2018-07-24 11:49:37,211 INFO L226 Difference]: Without dead ends: 13907 [2018-07-24 11:49:37,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 370 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:49:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13907 states. [2018-07-24 11:49:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13907 to 13907. [2018-07-24 11:49:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13907 states. [2018-07-24 11:49:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13907 states to 13907 states and 20684 transitions. [2018-07-24 11:49:37,567 INFO L78 Accepts]: Start accepts. Automaton has 13907 states and 20684 transitions. Word has length 186 [2018-07-24 11:49:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:49:37,567 INFO L471 AbstractCegarLoop]: Abstraction has 13907 states and 20684 transitions. [2018-07-24 11:49:37,568 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:49:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 13907 states and 20684 transitions. [2018-07-24 11:49:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-24 11:49:37,573 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:49:37,574 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:49:37,574 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:49:37,574 INFO L82 PathProgramCache]: Analyzing trace with hash -718943460, now seen corresponding path program 1 times [2018-07-24 11:49:37,577 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:49:37,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:37,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:37,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:37,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:49:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 58 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:49:37,998 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:49:37,998 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:49:38,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:38,016 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:49:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:38,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:49:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:49:38,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:49:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 58 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:49:38,668 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:49:38,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 11:49:38,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:49:38,669 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:49:38,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:49:38,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:49:38,670 INFO L87 Difference]: Start difference. First operand 13907 states and 20684 transitions. Second operand 5 states. [2018-07-24 11:49:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:49:47,355 INFO L93 Difference]: Finished difference Result 32700 states and 50484 transitions. [2018-07-24 11:49:47,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:49:47,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2018-07-24 11:49:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:49:47,437 INFO L225 Difference]: With dead ends: 32700 [2018-07-24 11:49:47,437 INFO L226 Difference]: Without dead ends: 18799 [2018-07-24 11:49:47,483 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:49:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18799 states. [2018-07-24 11:49:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18799 to 18739. [2018-07-24 11:49:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18739 states. [2018-07-24 11:49:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18739 states to 18739 states and 24492 transitions. [2018-07-24 11:49:47,900 INFO L78 Accepts]: Start accepts. Automaton has 18739 states and 24492 transitions. Word has length 190 [2018-07-24 11:49:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:49:47,900 INFO L471 AbstractCegarLoop]: Abstraction has 18739 states and 24492 transitions. [2018-07-24 11:49:47,900 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:49:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 18739 states and 24492 transitions. [2018-07-24 11:49:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-24 11:49:47,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:49:47,906 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:49:47,907 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:49:47,907 INFO L82 PathProgramCache]: Analyzing trace with hash -370267123, now seen corresponding path program 1 times [2018-07-24 11:49:47,907 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:49:47,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:47,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:47,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:47,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:49:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:48,183 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:49:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 58 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:49:48,592 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:49:48,592 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 11:49:48,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:48,603 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:49:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:48,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:49:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:49:48,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:49:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 58 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:49:49,034 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:49:49,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:49:49,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:49:49,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:49:49,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:49:49,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:49:49,036 INFO L87 Difference]: Start difference. First operand 18739 states and 24492 transitions. Second operand 5 states. [2018-07-24 11:50:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:02,085 INFO L93 Difference]: Finished difference Result 61222 states and 85542 transitions. [2018-07-24 11:50:02,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:50:02,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2018-07-24 11:50:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:02,250 INFO L225 Difference]: With dead ends: 61222 [2018-07-24 11:50:02,250 INFO L226 Difference]: Without dead ends: 42489 [2018-07-24 11:50:02,322 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 420 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:50:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42489 states. [2018-07-24 11:50:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42489 to 42311. [2018-07-24 11:50:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42311 states. [2018-07-24 11:50:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42311 states to 42311 states and 57171 transitions. [2018-07-24 11:50:03,671 INFO L78 Accepts]: Start accepts. Automaton has 42311 states and 57171 transitions. Word has length 213 [2018-07-24 11:50:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:03,671 INFO L471 AbstractCegarLoop]: Abstraction has 42311 states and 57171 transitions. [2018-07-24 11:50:03,671 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:50:03,672 INFO L276 IsEmpty]: Start isEmpty. Operand 42311 states and 57171 transitions. [2018-07-24 11:50:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-24 11:50:03,681 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:03,682 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:50:03,682 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:03,682 INFO L82 PathProgramCache]: Analyzing trace with hash -703209003, now seen corresponding path program 1 times [2018-07-24 11:50:03,683 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:03,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:03,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:03,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:03,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 58 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:50:04,068 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:50:04,069 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-24 11:50:04,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:04,079 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:50:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:04,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:50:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:50:04,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:50:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 58 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:50:05,429 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:50:05,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 11:50:05,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:50:05,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:50:05,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:50:05,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:50:05,433 INFO L87 Difference]: Start difference. First operand 42311 states and 57171 transitions. Second operand 5 states. [2018-07-24 11:50:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:16,918 INFO L93 Difference]: Finished difference Result 125326 states and 177330 transitions. [2018-07-24 11:50:16,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:50:16,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-07-24 11:50:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:17,191 INFO L225 Difference]: With dead ends: 125326 [2018-07-24 11:50:17,192 INFO L226 Difference]: Without dead ends: 83021 [2018-07-24 11:50:17,278 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:50:17,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83021 states. [2018-07-24 11:50:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83021 to 82772. [2018-07-24 11:50:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82772 states. [2018-07-24 11:50:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82772 states to 82772 states and 106812 transitions. [2018-07-24 11:50:18,696 INFO L78 Accepts]: Start accepts. Automaton has 82772 states and 106812 transitions. Word has length 217 [2018-07-24 11:50:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:18,696 INFO L471 AbstractCegarLoop]: Abstraction has 82772 states and 106812 transitions. [2018-07-24 11:50:18,696 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:50:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 82772 states and 106812 transitions. [2018-07-24 11:50:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-24 11:50:18,727 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:18,728 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:50:18,728 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:18,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1827657886, now seen corresponding path program 1 times [2018-07-24 11:50:18,728 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:18,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:18,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:18,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:18,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:50:19,076 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:50:19,077 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 11:50:19,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:19,091 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:50:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:19,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:50:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:50:19,338 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:50:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:50:19,530 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:50:19,530 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 11:50:19,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:19,549 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:50:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:19,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:50:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:50:19,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:50:20,119 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:50:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:50:21,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:50:21,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 11:50:21,316 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:50:21,318 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:50:21,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:50:21,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:50:21,319 INFO L87 Difference]: Start difference. First operand 82772 states and 106812 transitions. Second operand 9 states. [2018-07-24 11:50:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:41,136 INFO L93 Difference]: Finished difference Result 219392 states and 316813 transitions. [2018-07-24 11:50:41,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 11:50:41,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 354 [2018-07-24 11:50:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:41,676 INFO L225 Difference]: With dead ends: 219392 [2018-07-24 11:50:41,676 INFO L226 Difference]: Without dead ends: 118448 [2018-07-24 11:50:42,055 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 1415 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:50:42,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118448 states. [2018-07-24 11:50:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118448 to 115452. [2018-07-24 11:50:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115452 states. [2018-07-24 11:50:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115452 states to 115452 states and 148572 transitions. [2018-07-24 11:50:45,660 INFO L78 Accepts]: Start accepts. Automaton has 115452 states and 148572 transitions. Word has length 354 [2018-07-24 11:50:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:45,661 INFO L471 AbstractCegarLoop]: Abstraction has 115452 states and 148572 transitions. [2018-07-24 11:50:45,661 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:50:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 115452 states and 148572 transitions. [2018-07-24 11:50:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-24 11:50:45,696 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:45,696 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:50:45,696 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1853512713, now seen corresponding path program 1 times [2018-07-24 11:50:45,697 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:45,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:45,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:46,228 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-07-24 11:50:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 87 proven. 192 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 11:50:46,506 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:50:46,506 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 11:50:46,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:46,514 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:50:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:46,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:50:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-07-24 11:50:46,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:50:47,321 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-07-24 11:50:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 87 proven. 192 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 11:50:48,063 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:50:48,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:50:48,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:50:48,064 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:50:48,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:50:48,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:50:48,065 INFO L87 Difference]: Start difference. First operand 115452 states and 148572 transitions. Second operand 5 states. [2018-07-24 11:51:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:00,907 INFO L93 Difference]: Finished difference Result 245494 states and 310997 transitions. [2018-07-24 11:51:00,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:51:00,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2018-07-24 11:51:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:01,330 INFO L225 Difference]: With dead ends: 245494 [2018-07-24 11:51:01,330 INFO L226 Difference]: Without dead ends: 130816 [2018-07-24 11:51:01,540 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 770 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:51:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130816 states. [2018-07-24 11:51:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130816 to 130604. [2018-07-24 11:51:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130604 states. [2018-07-24 11:51:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130604 states to 130604 states and 161138 transitions. [2018-07-24 11:51:04,558 INFO L78 Accepts]: Start accepts. Automaton has 130604 states and 161138 transitions. Word has length 387 [2018-07-24 11:51:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:04,558 INFO L471 AbstractCegarLoop]: Abstraction has 130604 states and 161138 transitions. [2018-07-24 11:51:04,559 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:51:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 130604 states and 161138 transitions. [2018-07-24 11:51:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-24 11:51:04,580 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:04,580 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:51:04,581 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:51:04,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2039710098, now seen corresponding path program 1 times [2018-07-24 11:51:04,581 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:04,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:04,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:04,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:04,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-24 11:51:05,189 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:05,189 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:51:05,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:05,197 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:05,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-24 11:51:05,460 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-24 11:51:05,672 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:05,672 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:51:05,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:05,690 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:06,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-24 11:51:06,092 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-24 11:51:06,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:51:06,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:51:06,498 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:51:06,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:51:06,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:51:06,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:51:06,500 INFO L87 Difference]: Start difference. First operand 130604 states and 161138 transitions. Second operand 9 states. [2018-07-24 11:51:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:27,741 INFO L93 Difference]: Finished difference Result 312873 states and 413082 transitions. [2018-07-24 11:51:27,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 11:51:27,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 402 [2018-07-24 11:51:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:28,407 INFO L225 Difference]: With dead ends: 312873 [2018-07-24 11:51:28,407 INFO L226 Difference]: Without dead ends: 183043 [2018-07-24 11:51:28,647 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1626 GetRequests, 1608 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:51:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183043 states. [2018-07-24 11:51:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183043 to 172097. [2018-07-24 11:51:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172097 states. [2018-07-24 11:51:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172097 states to 172097 states and 221117 transitions. [2018-07-24 11:51:33,624 INFO L78 Accepts]: Start accepts. Automaton has 172097 states and 221117 transitions. Word has length 402 [2018-07-24 11:51:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:33,625 INFO L471 AbstractCegarLoop]: Abstraction has 172097 states and 221117 transitions. [2018-07-24 11:51:33,625 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:51:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 172097 states and 221117 transitions. [2018-07-24 11:51:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-24 11:51:33,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:33,645 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:51:33,646 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:51:33,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1362926114, now seen corresponding path program 1 times [2018-07-24 11:51:33,646 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:33,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:33,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:33,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:33,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:34,208 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-07-24 11:51:34,416 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-07-24 11:51:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 262 proven. 32 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 11:51:34,977 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:34,977 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:51:34,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:34,986 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:35,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:37,166 WARN L169 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 125 DAG size of output: 41 [2018-07-24 11:51:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 262 proven. 32 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 11:51:37,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 262 proven. 32 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 11:51:38,269 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:38,269 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:51:38,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:38,287 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:38,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:39,258 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 23 [2018-07-24 11:52:03,592 WARN L169 SmtUtils]: Spent 24.12 s on a formula simplification. DAG size of input: 160 DAG size of output: 100 [2018-07-24 11:52:11,197 WARN L169 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-07-24 11:52:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 184 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:12,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:52:19,961 WARN L169 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 506 DAG size of output: 21 [2018-07-24 11:52:20,174 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2018-07-24 11:52:20,416 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-07-24 11:52:21,824 WARN L169 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2018-07-24 11:52:22,247 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-07-24 11:52:22,350 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 11:52:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 307 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:27,946 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:52:27,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6, 11, 8] total 33 [2018-07-24 11:52:27,947 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:52:27,947 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 11:52:27,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 11:52:27,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=900, Unknown=4, NotChecked=0, Total=1056 [2018-07-24 11:52:27,948 INFO L87 Difference]: Start difference. First operand 172097 states and 221117 transitions. Second operand 15 states. Received shutdown request... [2018-07-24 11:52:32,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:52:32,139 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:52:32,145 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:52:32,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:52:32 BoogieIcfgContainer [2018-07-24 11:52:32,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:52:32,147 INFO L168 Benchmark]: Toolchain (without parser) took 226074.30 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 11:52:32,148 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-07-24 11:52:32,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2310.73 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:52:32,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 282.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:52:32,151 INFO L168 Benchmark]: Boogie Preprocessor took 1051.80 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:52:32,152 INFO L168 Benchmark]: RCFGBuilder took 9121.88 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 731.0 MB). Peak memory consumption was 731.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:52:32,153 INFO L168 Benchmark]: TraceAbstraction took 213301.88 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 399.5 MB. Max. memory is 7.1 GB. [2018-07-24 11:52:32,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2310.73 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 282.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1051.80 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9121.88 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 731.0 MB). Peak memory consumption was 731.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213301.88 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 399.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (172097states) and interpolant automaton (currently 11 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (1449 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 213.2s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 130.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1504 SDtfs, 32107 SDslu, 1966 SDs, 0 SdLazy, 60413 SolverSat, 15321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7165 GetRequests, 7014 SyntacticMatches, 26 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172097occurred in iteration=9, 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: 15.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 14689 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 63.3s InterpolantComputationTime, 6056 NumberOfCodeBlocks, 6056 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9549 ConstructedInterpolants, 163 QuantifiedInterpolants, 16564747 SizeOfPredicates, 15 NumberOfNonLiveVariables, 6108 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 6859/8173 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/Problem12_label08_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-52-32-174.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label08_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-52-32-174.csv Completed graceful shutdown