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/Problem16_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 18:57:15,554 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 18:57:15,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 18:57:15,571 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 18:57:15,571 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 18:57:15,572 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 18:57:15,573 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 18:57:15,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 18:57:15,584 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 18:57:15,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 18:57:15,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 18:57:15,586 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 18:57:15,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 18:57:15,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 18:57:15,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 18:57:15,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 18:57:15,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 18:57:15,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 18:57:15,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 18:57:15,605 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 18:57:15,606 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 18:57:15,607 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 18:57:15,612 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 18:57:15,613 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 18:57:15,613 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 18:57:15,614 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 18:57:15,615 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 18:57:15,615 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 18:57:15,618 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 18:57:15,619 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 18:57:15,620 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 18:57:15,620 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 18:57:15,620 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 18:57:15,621 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 18:57:15,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 18:57:15,624 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 18:57:15,624 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 18:57:15,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 18:57:15,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 18:57:15,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 18:57:15,657 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 18:57:15,657 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 18:57:15,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 18:57:15,658 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 18:57:15,661 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 18:57:15,662 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 18:57:15,662 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 18:57:15,662 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 18:57:15,662 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 18:57:15,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 18:57:15,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 18:57:15,663 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 18:57:15,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 18:57:15,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 18:57:15,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 18:57:15,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 18:57:15,664 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 18:57:15,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 18:57:15,667 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 18:57:15,667 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 18:57:15,667 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 18:57:15,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 18:57:15,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 18:57:15,668 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 18:57:15,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 18:57:15,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 18:57:15,668 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 18:57:15,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 18:57:15,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 18:57:15,669 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 18:57:15,669 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 18:57:15,669 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 18:57:15,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 18:57:15,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 18:57:15,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 18:57:15,744 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 18:57:15,744 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 18:57:15,745 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label19_true-unreach-call.c [2018-07-21 18:57:16,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/6699e974b/1c35bd492d1a479a8741c490722e9268/FLAGaa50a8bc4 [2018-07-21 18:57:16,527 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 18:57:16,528 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label19_true-unreach-call.c [2018-07-21 18:57:16,582 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/6699e974b/1c35bd492d1a479a8741c490722e9268/FLAGaa50a8bc4 [2018-07-21 18:57:16,596 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/6699e974b/1c35bd492d1a479a8741c490722e9268 [2018-07-21 18:57:16,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 18:57:16,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 18:57:16,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 18:57:16,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 18:57:16,619 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 18:57:16,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:57:16" (1/1) ... [2018-07-21 18:57:16,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5487e74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:16, skipping insertion in model container [2018-07-21 18:57:16,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:57:16" (1/1) ... [2018-07-21 18:57:16,896 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 18:57:17,578 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 18:57:17,597 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 18:57:17,971 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 18:57:18,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18 WrapperNode [2018-07-21 18:57:18,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 18:57:18,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 18:57:18,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 18:57:18,078 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 18:57:18,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 18:57:18,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 18:57:18,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 18:57:18,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 18:57:18,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (1/1) ... [2018-07-21 18:57:18,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 18:57:18,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 18:57:18,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 18:57:18,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 18:57:18,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (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 18:57:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 18:57:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 18:57:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 18:57:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 18:57:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 18:57:18,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 18:57:18,862 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 18:57:18,862 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 18:57:18,862 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 18:57:18,862 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 18:57:25,402 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 18:57:25,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:57:25 BoogieIcfgContainer [2018-07-21 18:57:25,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 18:57:25,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 18:57:25,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 18:57:25,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 18:57:25,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:57:16" (1/3) ... [2018-07-21 18:57:25,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e6ee3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:57:25, skipping insertion in model container [2018-07-21 18:57:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:57:18" (2/3) ... [2018-07-21 18:57:25,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e6ee3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:57:25, skipping insertion in model container [2018-07-21 18:57:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:57:25" (3/3) ... [2018-07-21 18:57:25,411 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label19_true-unreach-call.c [2018-07-21 18:57:25,421 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 18:57:25,429 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 18:57:25,483 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 18:57:25,484 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 18:57:25,484 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 18:57:25,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 18:57:25,484 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 18:57:25,485 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 18:57:25,485 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 18:57:25,485 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 18:57:25,485 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 18:57:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-21 18:57:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-21 18:57:25,539 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:57:25,540 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, 1, 1] [2018-07-21 18:57:25,541 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 18:57:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -564050412, now seen corresponding path program 1 times [2018-07-21 18:57:25,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:57:25,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:57:25,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:57:25,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:57:25,606 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:57:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:57:26,011 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 18:57:26,056 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 18:57:26,058 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 18:57:26,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 18:57:26,059 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:57:26,063 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 18:57:26,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 18:57:26,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 18:57:26,082 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-21 18:57:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:57:30,489 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-21 18:57:30,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 18:57:30,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-07-21 18:57:30,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:57:30,538 INFO L225 Difference]: With dead ends: 1156 [2018-07-21 18:57:30,538 INFO L226 Difference]: Without dead ends: 744 [2018-07-21 18:57:30,546 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 18:57:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-21 18:57:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-21 18:57:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-21 18:57:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-07-21 18:57:30,649 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 50 [2018-07-21 18:57:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:57:30,650 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-07-21 18:57:30,650 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 18:57:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-07-21 18:57:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-21 18:57:30,661 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:57:30,661 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, 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] [2018-07-21 18:57:30,662 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 18:57:30,662 INFO L82 PathProgramCache]: Analyzing trace with hash 671340246, now seen corresponding path program 1 times [2018-07-21 18:57:30,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:57:30,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:57:30,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:57:30,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:57:30,664 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:57:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:57:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 18:57:31,107 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 18:57:31,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 18:57:31,107 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:57:31,110 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 18:57:31,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 18:57:31,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 18:57:31,111 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-07-21 18:57:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:57:38,294 INFO L93 Difference]: Finished difference Result 2188 states and 3971 transitions. [2018-07-21 18:57:38,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 18:57:38,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-07-21 18:57:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:57:38,309 INFO L225 Difference]: With dead ends: 2188 [2018-07-21 18:57:38,309 INFO L226 Difference]: Without dead ends: 1450 [2018-07-21 18:57:38,313 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 18:57:38,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2018-07-21 18:57:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1445. [2018-07-21 18:57:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2018-07-21 18:57:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2387 transitions. [2018-07-21 18:57:38,432 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2387 transitions. Word has length 158 [2018-07-21 18:57:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:57:38,433 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 2387 transitions. [2018-07-21 18:57:38,433 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 18:57:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2387 transitions. [2018-07-21 18:57:38,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-21 18:57:38,450 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:57:38,451 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 18:57:38,451 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 18:57:38,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1756424968, now seen corresponding path program 1 times [2018-07-21 18:57:38,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:57:38,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:57:38,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:57:38,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:57:38,454 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:57:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:57:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 86 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 18:57:38,913 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 18:57:38,913 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 18:57:38,914 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-07-21 18:57:38,916 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [503], [505], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [848], [849], [853], [857], [861], [865], [869], [873], [877], [880], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 18:57:38,998 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 18:57:38,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 18:57:48,834 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 18:57:50,232 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 18:57:50,234 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 18:57:50,247 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 18:58:01,529 INFO L232 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 77.89% of their original sizes. [2018-07-21 18:58:01,530 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 18:58:02,759 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 18:58:02,761 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 18:58:02,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-07-21 18:58:02,761 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:58:02,762 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 18:58:02,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 18:58:02,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-21 18:58:02,763 INFO L87 Difference]: Start difference. First operand 1445 states and 2387 transitions. Second operand 8 states. [2018-07-21 19:00:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:00:05,111 INFO L93 Difference]: Finished difference Result 3224 states and 5273 transitions. [2018-07-21 19:00:05,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 19:00:05,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2018-07-21 19:00:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:00:05,125 INFO L225 Difference]: With dead ends: 3224 [2018-07-21 19:00:05,125 INFO L226 Difference]: Without dead ends: 1785 [2018-07-21 19:00:05,131 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 275 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-21 19:00:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2018-07-21 19:00:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1783. [2018-07-21 19:00:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2018-07-21 19:00:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2732 transitions. [2018-07-21 19:00:05,210 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2732 transitions. Word has length 274 [2018-07-21 19:00:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:00:05,211 INFO L471 AbstractCegarLoop]: Abstraction has 1783 states and 2732 transitions. [2018-07-21 19:00:05,211 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-21 19:00:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2732 transitions. [2018-07-21 19:00:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-21 19:00:05,221 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:00:05,222 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:00:05,222 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 19:00:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1426822890, now seen corresponding path program 1 times [2018-07-21 19:00:05,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:00:05,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:00:05,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:00:05,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:00:05,224 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:00:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:00:05,679 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 19:00:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 135 proven. 274 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-21 19:00:06,246 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:00:06,246 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:00:06,246 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-07-21 19:00:06,247 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [503], [505], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [784], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [848], [849], [853], [857], [861], [865], [869], [873], [877], [880], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 19:00:06,254 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:00:06,254 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:00:12,485 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:00:23,986 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 19:00:23,986 INFO L272 AbstractInterpreter]: Visited 126 different actions 364 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 19:00:24,000 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 19:00:24,000 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:00:24,000 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 19:00:24,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:00:24,008 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:00:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:00:24,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:00:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-21 19:00:24,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:00:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 224 proven. 107 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-21 19:00:25,626 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:00:25,626 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-21 19:00:25,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:00:25,650 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:00:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:00:25,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:00:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-21 19:00:26,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:00:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 224 proven. 107 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-21 19:00:26,261 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-21 19:00:26,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-21 19:00:26,262 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-21 19:00:26,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-21 19:00:26,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-21 19:00:26,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-21 19:00:26,264 INFO L87 Difference]: Start difference. First operand 1783 states and 2732 transitions. Second operand 9 states. Received shutdown request... [2018-07-21 19:00:34,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-21 19:00:34,622 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 19:00:34,627 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 19:00:34,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:00:34 BoogieIcfgContainer [2018-07-21 19:00:34,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 19:00:34,628 INFO L168 Benchmark]: Toolchain (without parser) took 198022.89 ms. Allocated memory was 308.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 248.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-07-21 19:00:34,628 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 308.3 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 19:00:34,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1465.83 ms. Allocated memory was 308.3 MB in the beginning and 332.9 MB in the end (delta: 24.6 MB). Free memory was 247.6 MB in the beginning and 266.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 72.7 MB. Max. memory is 5.3 GB. [2018-07-21 19:00:34,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 195.33 ms. Allocated memory is still 332.9 MB. Free memory was 266.0 MB in the beginning and 243.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 5.3 GB. [2018-07-21 19:00:34,631 INFO L168 Benchmark]: Boogie Preprocessor took 508.60 ms. Allocated memory was 332.9 MB in the beginning and 540.0 MB in the end (delta: 207.1 MB). Free memory was 243.7 MB in the beginning and 491.0 MB in the end (delta: -247.3 MB). Peak memory consumption was 34.2 MB. Max. memory is 5.3 GB. [2018-07-21 19:00:34,632 INFO L168 Benchmark]: RCFGBuilder took 6621.38 ms. Allocated memory is still 540.0 MB. Free memory was 491.0 MB in the beginning and 407.4 MB in the end (delta: 83.6 MB). Peak memory consumption was 203.3 MB. Max. memory is 5.3 GB. [2018-07-21 19:00:34,632 INFO L168 Benchmark]: TraceAbstraction took 189222.40 ms. Allocated memory was 540.0 MB in the beginning and 2.6 GB in the end (delta: 2.1 GB). Free memory was 407.4 MB in the beginning and 1.3 GB in the end (delta: -903.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-07-21 19:00:34,636 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 308.3 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1465.83 ms. Allocated memory was 308.3 MB in the beginning and 332.9 MB in the end (delta: 24.6 MB). Free memory was 247.6 MB in the beginning and 266.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 72.7 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 195.33 ms. Allocated memory is still 332.9 MB. Free memory was 266.0 MB in the beginning and 243.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 508.60 ms. Allocated memory was 332.9 MB in the beginning and 540.0 MB in the end (delta: 207.1 MB). Free memory was 243.7 MB in the beginning and 491.0 MB in the end (delta: -247.3 MB). Peak memory consumption was 34.2 MB. Max. memory is 5.3 GB. * RCFGBuilder took 6621.38 ms. Allocated memory is still 540.0 MB. Free memory was 491.0 MB in the beginning and 407.4 MB in the end (delta: 83.6 MB). Peak memory consumption was 203.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 189222.40 ms. Allocated memory was 540.0 MB in the beginning and 2.6 GB in the end (delta: 2.1 GB). Free memory was 407.4 MB in the beginning and 1.3 GB in the end (delta: -903.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while BasicCegarLoop was constructing difference of abstraction (1783states) and interpolant automaton (currently 29 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (6734 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 189.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 142.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 781 SDtfs, 6537 SDslu, 821 SDs, 0 SdLazy, 9497 SolverSat, 4047 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 112.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1810 GetRequests, 1750 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1783occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.0s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9963038169559908 AbsIntWeakeningRatio, 0.09523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 29.31135531135531 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1580 NumberOfCodeBlocks, 1580 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 2304 ConstructedInterpolants, 0 QuantifiedInterpolants, 2108236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1194 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1747/2342 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/Problem16_label19_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_19-00-34-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem16_label19_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_19-00-34-651.csv Completed graceful shutdown