java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 19:48:48,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 19:48:48,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 19:48:49,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 19:48:49,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 19:48:49,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 19:48:49,006 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 19:48:49,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 19:48:49,011 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 19:48:49,012 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 19:48:49,014 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 19:48:49,015 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 19:48:49,015 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 19:48:49,016 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 19:48:49,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 19:48:49,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 19:48:49,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 19:48:49,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 19:48:49,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 19:48:49,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 19:48:49,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 19:48:49,042 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 19:48:49,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 19:48:49,049 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 19:48:49,049 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 19:48:49,050 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 19:48:49,051 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 19:48:49,052 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 19:48:49,052 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 19:48:49,057 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 19:48:49,058 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 19:48:49,058 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 19:48:49,059 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 19:48:49,059 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 19:48:49,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 19:48:49,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 19:48:49,060 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 19:48:49,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 19:48:49,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 19:48:49,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 19:48:49,091 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 19:48:49,091 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 19:48:49,091 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 19:48:49,091 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 19:48:49,091 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 19:48:49,092 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 19:48:49,092 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 19:48:49,092 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 19:48:49,092 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 19:48:49,093 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 19:48:49,093 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 19:48:49,093 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 19:48:49,093 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 19:48:49,098 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 19:48:49,098 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 19:48:49,098 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 19:48:49,098 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 19:48:49,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 19:48:49,099 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 19:48:49,099 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 19:48:49,099 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 19:48:49,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 19:48:49,099 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 19:48:49,100 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 19:48:49,100 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 19:48:49,100 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 19:48:49,100 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 19:48:49,100 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 19:48:49,101 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 19:48:49,101 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 19:48:49,101 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 19:48:49,101 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 19:48:49,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 19:48:49,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 19:48:49,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 19:48:49,189 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 19:48:49,189 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 19:48:49,191 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-07-21 19:48:49,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/fc30ced92/42a55e6a78394daab8b2386b15c23f52/FLAG070c52f1c [2018-07-21 19:48:50,032 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 19:48:50,033 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-07-21 19:48:50,081 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/fc30ced92/42a55e6a78394daab8b2386b15c23f52/FLAG070c52f1c [2018-07-21 19:48:50,097 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/fc30ced92/42a55e6a78394daab8b2386b15c23f52 [2018-07-21 19:48:50,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 19:48:50,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 19:48:50,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 19:48:50,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 19:48:50,121 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 19:48:50,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:48:50" (1/1) ... [2018-07-21 19:48:50,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd18400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:50, skipping insertion in model container [2018-07-21 19:48:50,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:48:50" (1/1) ... [2018-07-21 19:48:50,461 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 19:48:51,423 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:48:51,445 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 19:48:52,064 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:48:52,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52 WrapperNode [2018-07-21 19:48:52,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 19:48:52,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 19:48:52,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 19:48:52,302 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 19:48:52,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:52,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:52,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 19:48:52,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 19:48:52,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 19:48:52,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 19:48:53,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... [2018-07-21 19:48:53,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 19:48:53,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 19:48:53,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 19:48:53,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 19:48:53,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 19:48:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 19:48:53,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 19:48:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 19:48:53,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 19:48:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 19:48:53,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 19:48:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 19:48:53,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 19:48:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 19:48:53,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 19:49:03,504 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 19:49:03,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:49:03 BoogieIcfgContainer [2018-07-21 19:49:03,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 19:49:03,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 19:49:03,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 19:49:03,510 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 19:49:03,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:48:50" (1/3) ... [2018-07-21 19:49:03,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732ee478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:49:03, skipping insertion in model container [2018-07-21 19:49:03,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:48:52" (2/3) ... [2018-07-21 19:49:03,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732ee478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:49:03, skipping insertion in model container [2018-07-21 19:49:03,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:49:03" (3/3) ... [2018-07-21 19:49:03,518 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27_true-unreach-call.c [2018-07-21 19:49:03,526 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 19:49:03,539 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 19:49:03,607 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 19:49:03,607 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 19:49:03,608 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 19:49:03,608 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 19:49:03,608 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 19:49:03,608 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 19:49:03,608 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 19:49:03,608 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 19:49:03,608 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 19:49:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-21 19:49:03,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-21 19:49:03,656 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:49:03,657 INFO L358 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] [2018-07-21 19:49:03,658 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:49:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1148355404, now seen corresponding path program 1 times [2018-07-21 19:49:03,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:49:03,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:03,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:49:03,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:03,719 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:49:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:49:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:49:04,217 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:49:04,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 19:49:04,218 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:49:04,222 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 19:49:04,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 19:49:04,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 19:49:04,242 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-21 19:49:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:49:16,069 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-07-21 19:49:16,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 19:49:16,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-07-21 19:49:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:49:16,104 INFO L225 Difference]: With dead ends: 2133 [2018-07-21 19:49:16,105 INFO L226 Difference]: Without dead ends: 1523 [2018-07-21 19:49:16,121 INFO L578 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 [2018-07-21 19:49:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-07-21 19:49:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-07-21 19:49:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-07-21 19:49:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-07-21 19:49:16,311 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 48 [2018-07-21 19:49:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:49:16,312 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-07-21 19:49:16,313 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 19:49:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-07-21 19:49:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-21 19:49:16,322 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:49:16,326 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:49:16,326 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:49:16,326 INFO L82 PathProgramCache]: Analyzing trace with hash 479665946, now seen corresponding path program 1 times [2018-07-21 19:49:16,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:49:16,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:16,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:49:16,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:16,328 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:49:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:49:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:49:16,809 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:49:16,809 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:49:16,811 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 124 with the following transitions: [2018-07-21 19:49:16,814 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:49:16,893 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:49:16,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:49:22,828 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:49:42,656 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 19:49:42,657 INFO L272 AbstractInterpreter]: Visited 83 different actions 234 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 19:49:42,686 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 19:49:42,686 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:49:42,686 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-21 19:49:42,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:49:42,695 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:49:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:49:42,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:49:46,656 WARN L169 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 32 [2018-07-21 19:49:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:49:48,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:49:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:49:49,493 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-21 19:49:49,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-07-21 19:49:49,494 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:49:49,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 19:49:49,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 19:49:49,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-07-21 19:49:49,495 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 3 states. [2018-07-21 19:49:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:49:55,209 INFO L93 Difference]: Finished difference Result 4342 states and 6673 transitions. [2018-07-21 19:49:55,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 19:49:55,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2018-07-21 19:49:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:49:55,235 INFO L225 Difference]: With dead ends: 4342 [2018-07-21 19:49:55,235 INFO L226 Difference]: Without dead ends: 2832 [2018-07-21 19:49:55,245 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-07-21 19:49:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2018-07-21 19:49:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2827. [2018-07-21 19:49:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2018-07-21 19:49:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4227 transitions. [2018-07-21 19:49:55,379 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4227 transitions. Word has length 123 [2018-07-21 19:49:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:49:55,382 INFO L471 AbstractCegarLoop]: Abstraction has 2827 states and 4227 transitions. [2018-07-21 19:49:55,382 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 19:49:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4227 transitions. [2018-07-21 19:49:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-21 19:49:55,399 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:49:55,399 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:49:55,399 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:49:55,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1490218021, now seen corresponding path program 1 times [2018-07-21 19:49:55,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:49:55,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:55,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:49:55,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:55,401 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:49:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:49:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:49:55,732 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:49:55,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 19:49:55,732 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:49:55,733 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 19:49:55,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 19:49:55,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 19:49:55,733 INFO L87 Difference]: Start difference. First operand 2827 states and 4227 transitions. Second operand 6 states. [2018-07-21 19:50:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:50:00,858 INFO L93 Difference]: Finished difference Result 8406 states and 13043 transitions. [2018-07-21 19:50:00,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 19:50:00,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-07-21 19:50:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:50:00,907 INFO L225 Difference]: With dead ends: 8406 [2018-07-21 19:50:00,907 INFO L226 Difference]: Without dead ends: 5585 [2018-07-21 19:50:00,921 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 19:50:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2018-07-21 19:50:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5548. [2018-07-21 19:50:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2018-07-21 19:50:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 7955 transitions. [2018-07-21 19:50:01,169 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 7955 transitions. Word has length 164 [2018-07-21 19:50:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:50:01,170 INFO L471 AbstractCegarLoop]: Abstraction has 5548 states and 7955 transitions. [2018-07-21 19:50:01,170 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 19:50:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 7955 transitions. [2018-07-21 19:50:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-21 19:50:01,179 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:50:01,182 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 19:50:01,183 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:50:01,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1298374657, now seen corresponding path program 1 times [2018-07-21 19:50:01,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:50:01,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:01,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:01,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:01,184 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:50:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:01,579 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 19:50:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 83 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-21 19:50:01,859 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:01,859 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:50:01,859 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-07-21 19:50:01,860 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [1248], [1252], [1256], [1260], [1264], [1268], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1311], [1315], [1319], [1323], [1326], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:50:01,868 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:50:01,869 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:50:06,275 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:50:25,615 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 19:50:25,615 INFO L272 AbstractInterpreter]: Visited 102 different actions 291 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 19:50:25,622 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 19:50:25,622 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:25,622 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-21 19:50:25,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:25,634 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:50:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:25,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:50:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:50:25,825 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:50:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:50:26,121 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:26,121 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-21 19:50:26,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:26,153 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:50:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:26,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:50:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-21 19:50:26,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:50:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-21 19:50:26,951 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-21 19:50:26,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-21 19:50:26,952 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:50:26,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 19:50:26,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 19:50:26,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-21 19:50:26,953 INFO L87 Difference]: Start difference. First operand 5548 states and 7955 transitions. Second operand 5 states. [2018-07-21 19:50:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:50:31,064 INFO L93 Difference]: Finished difference Result 13318 states and 19134 transitions. [2018-07-21 19:50:31,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 19:50:31,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-07-21 19:50:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:50:31,139 INFO L225 Difference]: With dead ends: 13318 [2018-07-21 19:50:31,139 INFO L226 Difference]: Without dead ends: 7776 [2018-07-21 19:50:31,163 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 856 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-21 19:50:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2018-07-21 19:50:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 7773. [2018-07-21 19:50:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7773 states. [2018-07-21 19:50:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 9879 transitions. [2018-07-21 19:50:31,401 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 9879 transitions. Word has length 216 [2018-07-21 19:50:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:50:31,402 INFO L471 AbstractCegarLoop]: Abstraction has 7773 states and 9879 transitions. [2018-07-21 19:50:31,402 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 19:50:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 9879 transitions. [2018-07-21 19:50:31,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-21 19:50:31,410 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:50:31,410 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 19:50:31,410 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:50:31,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1662764603, now seen corresponding path program 1 times [2018-07-21 19:50:31,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:50:31,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:31,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:31,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:31,413 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:50:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 82 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 19:50:31,943 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:31,943 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:50:31,943 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-07-21 19:50:31,944 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1255], [1256], [1260], [1264], [1268], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1311], [1315], [1319], [1323], [1327], [1331], [1342], [1346], [1350], [1354], [1358], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1408], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:50:31,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:50:31,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:50:35,886 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:50:40,721 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 19:50:40,722 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-21 19:50:40,730 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 19:50:52,941 INFO L232 lantSequenceWeakener]: Weakened 227 states. On average, predicates are now at 75.58% of their original sizes. [2018-07-21 19:50:52,942 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 19:50:54,025 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 19:50:54,026 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 19:50:54,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-07-21 19:50:54,026 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:50:54,027 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-21 19:50:54,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-21 19:50:54,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-21 19:50:54,028 INFO L87 Difference]: Start difference. First operand 7773 states and 9879 transitions. Second operand 9 states. Received shutdown request... [2018-07-21 19:52:20,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-21 19:52:20,063 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 19:52:20,068 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 19:52:20,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:52:20 BoogieIcfgContainer [2018-07-21 19:52:20,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 19:52:20,069 INFO L168 Benchmark]: Toolchain (without parser) took 209962.64 ms. Allocated memory was 306.2 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 243.7 MB in the beginning and 532.7 MB in the end (delta: -289.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-07-21 19:52:20,070 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 19:52:20,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2187.61 ms. Allocated memory was 306.2 MB in the beginning and 336.1 MB in the end (delta: 29.9 MB). Free memory was 242.7 MB in the beginning and 168.1 MB in the end (delta: 74.6 MB). Peak memory consumption was 104.5 MB. Max. memory is 5.3 GB. [2018-07-21 19:52:20,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 368.55 ms. Allocated memory was 336.1 MB in the beginning and 398.5 MB in the end (delta: 62.4 MB). Free memory was 168.1 MB in the beginning and 289.1 MB in the end (delta: -121.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. [2018-07-21 19:52:20,072 INFO L168 Benchmark]: Boogie Preprocessor took 853.85 ms. Allocated memory was 398.5 MB in the beginning and 558.9 MB in the end (delta: 160.4 MB). Free memory was 289.1 MB in the beginning and 454.8 MB in the end (delta: -165.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 5.3 GB. [2018-07-21 19:52:20,072 INFO L168 Benchmark]: RCFGBuilder took 9979.96 ms. Allocated memory was 558.9 MB in the beginning and 667.9 MB in the end (delta: 109.1 MB). Free memory was 454.8 MB in the beginning and 439.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 197.4 MB. Max. memory is 5.3 GB. [2018-07-21 19:52:20,073 INFO L168 Benchmark]: TraceAbstraction took 196562.62 ms. Allocated memory was 667.9 MB in the beginning and 2.5 GB in the end (delta: 1.8 GB). Free memory was 439.3 MB in the beginning and 532.7 MB in the end (delta: -93.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-07-21 19:52:20,078 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2187.61 ms. Allocated memory was 306.2 MB in the beginning and 336.1 MB in the end (delta: 29.9 MB). Free memory was 242.7 MB in the beginning and 168.1 MB in the end (delta: 74.6 MB). Peak memory consumption was 104.5 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 368.55 ms. Allocated memory was 336.1 MB in the beginning and 398.5 MB in the end (delta: 62.4 MB). Free memory was 168.1 MB in the beginning and 289.1 MB in the end (delta: -121.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 853.85 ms. Allocated memory was 398.5 MB in the beginning and 558.9 MB in the end (delta: 160.4 MB). Free memory was 289.1 MB in the beginning and 454.8 MB in the end (delta: -165.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 9979.96 ms. Allocated memory was 558.9 MB in the beginning and 667.9 MB in the end (delta: 109.1 MB). Free memory was 454.8 MB in the beginning and 439.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 197.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 196562.62 ms. Allocated memory was 667.9 MB in the beginning and 2.5 GB in the end (delta: 1.8 GB). Free memory was 439.3 MB in the beginning and 532.7 MB in the end (delta: -93.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 131). Cancelled while BasicCegarLoop was constructing difference of abstraction (7773states) and interpolant automaton (currently 9 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (5915 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 196.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 113.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2080 SDtfs, 5691 SDslu, 953 SDs, 0 SdLazy, 9067 SolverSat, 3082 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1379 GetRequests, 1331 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7773occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 58.4s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9958579881656804 AbsIntWeakeningRatio, 0.11538461538461539 AbsIntAvgWeakeningVarsNumRemoved, 38.7008547008547 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1341 NumberOfCodeBlocks, 1341 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1885 ConstructedInterpolants, 44 QuantifiedInterpolants, 1681490 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1094 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 945/1108 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label27_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_19-52-20-092.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label27_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_19-52-20-092.csv Completed graceful shutdown