java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:13:51,669 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:13:51,671 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:13:51,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:13:51,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:13:51,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:13:51,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:13:51,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:13:51,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:13:51,691 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:13:51,692 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:13:51,692 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:13:51,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:13:51,694 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:13:51,695 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:13:51,696 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:13:51,697 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:13:51,699 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:13:51,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:13:51,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:13:51,704 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:13:51,706 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:13:51,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:13:51,713 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:13:51,713 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:13:51,714 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:13:51,715 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:13:51,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:13:51,717 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:13:51,718 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:13:51,718 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:13:51,719 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-10 10:13:51,721 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 10:13:51,739 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:13:51,739 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:13:51,740 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:13:51,740 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:13:51,740 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:13:51,741 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:13:51,741 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:13:51,741 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:13:51,741 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:13:51,742 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:13:51,742 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:13:51,743 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:13:51,743 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:13:51,743 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:13:51,743 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:13:51,743 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:13:51,744 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:13:51,744 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:13:51,744 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:13:51,744 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:13:51,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:13:51,745 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:13:51,745 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:13:51,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:13:51,745 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:13:51,745 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:13:51,746 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:13:51,746 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:13:51,746 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:13:51,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:13:51,746 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:13:51,746 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:13:51,747 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:13:51,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:13:51,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:13:51,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:13:51,834 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:13:51,835 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:13:51,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i [2018-09-10 10:13:52,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f2813f5/3097fdc8601f43448d569e51a7d71373/FLAG844efeec5 [2018-09-10 10:13:52,383 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:13:52,384 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i [2018-09-10 10:13:52,391 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f2813f5/3097fdc8601f43448d569e51a7d71373/FLAG844efeec5 [2018-09-10 10:13:52,407 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f2813f5/3097fdc8601f43448d569e51a7d71373 [2018-09-10 10:13:52,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:13:52,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:13:52,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:13:52,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:13:52,433 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:13:52,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4f7032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52, skipping insertion in model container [2018-09-10 10:13:52,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,593 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:13:52,637 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:13:52,655 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:13:52,668 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:13:52,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52 WrapperNode [2018-09-10 10:13:52,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:13:52,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:13:52,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:13:52,687 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:13:52,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:13:52,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:13:52,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:13:52,712 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:13:52,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... [2018-09-10 10:13:52,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:13:52,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:13:52,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:13:52,739 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:13:52,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:13:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:13:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:13:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-10 10:13:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-10 10:13:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:13:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:13:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:13:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:13:53,444 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:13:53,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:13:53 BoogieIcfgContainer [2018-09-10 10:13:53,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:13:53,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:13:53,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:13:53,449 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:13:53,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:13:52" (1/3) ... [2018-09-10 10:13:53,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181d479d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:13:53, skipping insertion in model container [2018-09-10 10:13:53,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:52" (2/3) ... [2018-09-10 10:13:53,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181d479d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:13:53, skipping insertion in model container [2018-09-10 10:13:53,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:13:53" (3/3) ... [2018-09-10 10:13:53,453 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute_true-unreach-call_true-termination.i [2018-09-10 10:13:53,463 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:13:53,473 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:13:53,533 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:13:53,533 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:13:53,533 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:13:53,534 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:13:53,534 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:13:53,534 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:13:53,534 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:13:53,534 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:13:53,534 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:13:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-09-10 10:13:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-10 10:13:53,560 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:53,561 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:53,562 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2143096435, now seen corresponding path program 1 times [2018-09-10 10:13:53,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:53,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:53,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:53,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:53,617 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:53,790 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:13:53,790 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 10:13:53,790 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:53,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:13:53,812 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:13:53,813 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 10:13:53,817 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2018-09-10 10:13:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:54,364 INFO L93 Difference]: Finished difference Result 116 states and 211 transitions. [2018-09-10 10:13:54,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:13:54,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-09-10 10:13:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:54,380 INFO L225 Difference]: With dead ends: 116 [2018-09-10 10:13:54,381 INFO L226 Difference]: Without dead ends: 66 [2018-09-10 10:13:54,386 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:13:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-10 10:13:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2018-09-10 10:13:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-10 10:13:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2018-09-10 10:13:54,446 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 16 [2018-09-10 10:13:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:54,447 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2018-09-10 10:13:54,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:13:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2018-09-10 10:13:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-10 10:13:54,449 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:54,449 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:54,449 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1570356907, now seen corresponding path program 1 times [2018-09-10 10:13:54,450 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:54,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:54,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:54,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:54,452 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:54,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:54,572 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:13:54,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:54,589 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:54,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:54,805 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:54,890 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:13:54,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2018-09-10 10:13:54,890 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:54,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:13:54,891 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:13:54,891 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:13:54,892 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand 6 states. [2018-09-10 10:13:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:55,576 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2018-09-10 10:13:55,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:13:55,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-09-10 10:13:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:55,580 INFO L225 Difference]: With dead ends: 65 [2018-09-10 10:13:55,580 INFO L226 Difference]: Without dead ends: 63 [2018-09-10 10:13:55,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:13:55,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-10 10:13:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-10 10:13:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-10 10:13:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2018-09-10 10:13:55,597 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 21 [2018-09-10 10:13:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:55,598 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2018-09-10 10:13:55,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:13:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2018-09-10 10:13:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-10 10:13:55,600 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:55,600 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:55,601 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash 196313274, now seen corresponding path program 1 times [2018-09-10 10:13:55,601 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:55,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:55,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:55,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:55,603 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 10:13:55,711 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:13:55,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:13:55,711 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:55,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:13:55,712 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:13:55,712 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:13:55,714 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 3 states. [2018-09-10 10:13:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:55,768 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2018-09-10 10:13:55,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:13:55,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-09-10 10:13:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:55,771 INFO L225 Difference]: With dead ends: 93 [2018-09-10 10:13:55,771 INFO L226 Difference]: Without dead ends: 63 [2018-09-10 10:13:55,772 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:13:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-10 10:13:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-10 10:13:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-10 10:13:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2018-09-10 10:13:55,787 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 51 [2018-09-10 10:13:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:55,787 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2018-09-10 10:13:55,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:13:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2018-09-10 10:13:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-10 10:13:55,790 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:55,791 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:55,791 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1850547815, now seen corresponding path program 1 times [2018-09-10 10:13:55,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:55,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:55,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:55,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:55,793 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-10 10:13:55,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:55,912 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:13:55,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:55,933 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:55,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 10:13:56,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 10:13:56,280 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:13:56,280 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2018-09-10 10:13:56,280 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:56,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:13:56,281 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:13:56,281 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:13:56,283 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand 6 states. [2018-09-10 10:13:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:56,524 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2018-09-10 10:13:56,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:13:56,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-09-10 10:13:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:56,528 INFO L225 Difference]: With dead ends: 71 [2018-09-10 10:13:56,529 INFO L226 Difference]: Without dead ends: 69 [2018-09-10 10:13:56,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:13:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-10 10:13:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2018-09-10 10:13:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-10 10:13:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2018-09-10 10:13:56,542 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 52 [2018-09-10 10:13:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:56,542 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-09-10 10:13:56,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:13:56,543 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2018-09-10 10:13:56,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-10 10:13:56,546 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:56,546 INFO L376 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:56,547 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1298346981, now seen corresponding path program 1 times [2018-09-10 10:13:56,547 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:56,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:56,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:56,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:56,548 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-09-10 10:13:56,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:56,701 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:13:56,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:56,712 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:56,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-09-10 10:13:56,879 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-09-10 10:13:57,011 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:13:57,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2018-09-10 10:13:57,012 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:57,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:13:57,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:13:57,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:13:57,014 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 6 states. [2018-09-10 10:13:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:57,149 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2018-09-10 10:13:57,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:13:57,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-09-10 10:13:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:57,154 INFO L225 Difference]: With dead ends: 78 [2018-09-10 10:13:57,154 INFO L226 Difference]: Without dead ends: 76 [2018-09-10 10:13:57,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:13:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-10 10:13:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2018-09-10 10:13:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-10 10:13:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2018-09-10 10:13:57,168 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 88 [2018-09-10 10:13:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:57,168 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2018-09-10 10:13:57,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:13:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2018-09-10 10:13:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-10 10:13:57,171 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:57,171 INFO L376 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:57,171 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:57,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1088488061, now seen corresponding path program 1 times [2018-09-10 10:13:57,172 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:57,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:57,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:57,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:57,173 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-10 10:13:57,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:57,327 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:13:57,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:57,337 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:57,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-10 10:13:57,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-10 10:13:57,684 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:13:57,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 11 [2018-09-10 10:13:57,684 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:57,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:13:57,685 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:13:57,685 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:13:57,686 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand 6 states. [2018-09-10 10:13:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:57,855 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2018-09-10 10:13:57,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:13:57,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-09-10 10:13:57,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:57,859 INFO L225 Difference]: With dead ends: 78 [2018-09-10 10:13:57,859 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:13:57,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:13:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:13:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:13:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:13:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:13:57,861 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2018-09-10 10:13:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:57,862 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:13:57,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:13:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:13:57,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:13:57,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:13:58,515 WARN L175 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 10:13:58,522 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-10 10:13:58,522 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:13:58,522 INFO L426 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-10 10:13:58,522 INFO L429 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-10 10:13:58,522 INFO L426 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_apache_escape_absolute_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-10 10:13:58,523 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 69) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-09-10 10:13:58,523 INFO L426 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2018-09-10 10:13:58,524 INFO L422 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,524 INFO L422 ceAbstractionStarter]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,524 INFO L422 ceAbstractionStarter]: At program point L53(line 53) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0) (<= (+ main_~c~0 2) main_~tokenlen~0)) [2018-09-10 10:13:58,524 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-10 10:13:58,525 INFO L422 ceAbstractionStarter]: At program point L53-1(line 53) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0) (<= (+ main_~c~0 2) main_~tokenlen~0)) [2018-09-10 10:13:58,525 INFO L426 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-09-10 10:13:58,525 INFO L426 ceAbstractionStarter]: For program point L54(line 54) no Hoare annotation was computed. [2018-09-10 10:13:58,525 INFO L426 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-09-10 10:13:58,525 INFO L426 ceAbstractionStarter]: For program point L21-1(lines 11 69) no Hoare annotation was computed. [2018-09-10 10:13:58,525 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 69) no Hoare annotation was computed. [2018-09-10 10:13:58,526 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 66) no Hoare annotation was computed. [2018-09-10 10:13:58,526 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 69) the Hoare annotation is: true [2018-09-10 10:13:58,526 INFO L426 ceAbstractionStarter]: For program point L55(lines 55 61) no Hoare annotation was computed. [2018-09-10 10:13:58,526 INFO L426 ceAbstractionStarter]: For program point L22(lines 11 69) no Hoare annotation was computed. [2018-09-10 10:13:58,526 INFO L426 ceAbstractionStarter]: For program point L55-1(lines 55 61) no Hoare annotation was computed. [2018-09-10 10:13:58,526 INFO L426 ceAbstractionStarter]: For program point L47(lines 47 65) no Hoare annotation was computed. [2018-09-10 10:13:58,527 INFO L422 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (<= 1 main_~cp~0)) (.cse1 (<= 0 main_~scheme~0))) (or (and (= main_~urilen~0 (+ main_~cp~0 1)) .cse0 .cse1) (and .cse0 .cse1 (<= (+ main_~cp~0 2) main_~urilen~0)))) [2018-09-10 10:13:58,527 INFO L422 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,527 INFO L422 ceAbstractionStarter]: At program point L31-1(line 31) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,527 INFO L426 ceAbstractionStarter]: For program point L23(lines 11 69) no Hoare annotation was computed. [2018-09-10 10:13:58,527 INFO L426 ceAbstractionStarter]: For program point L40(lines 30 66) no Hoare annotation was computed. [2018-09-10 10:13:58,528 INFO L422 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,528 INFO L422 ceAbstractionStarter]: At program point L57-1(line 57) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,528 INFO L422 ceAbstractionStarter]: At program point L49(line 49) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,528 INFO L422 ceAbstractionStarter]: At program point L49-1(line 49) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,528 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 38) no Hoare annotation was computed. [2018-09-10 10:13:58,528 INFO L422 ceAbstractionStarter]: At program point L33-2(lines 32 38) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,528 INFO L422 ceAbstractionStarter]: At program point L33-3(lines 33 38) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,529 INFO L422 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,529 INFO L422 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,529 INFO L422 ceAbstractionStarter]: At program point L42-1(line 42) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,529 INFO L429 ceAbstractionStarter]: At program point L67(lines 11 69) the Hoare annotation is: true [2018-09-10 10:13:58,529 INFO L426 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-09-10 10:13:58,529 INFO L422 ceAbstractionStarter]: At program point L59(line 59) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,530 INFO L426 ceAbstractionStarter]: For program point L51(lines 51 63) no Hoare annotation was computed. [2018-09-10 10:13:58,530 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-10 10:13:58,530 INFO L422 ceAbstractionStarter]: At program point L51-2(lines 50 63) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-09-10 10:13:58,530 INFO L426 ceAbstractionStarter]: For program point L43(lines 30 66) no Hoare annotation was computed. [2018-09-10 10:13:58,530 INFO L422 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,530 INFO L422 ceAbstractionStarter]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-09-10 10:13:58,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:13:58 BoogieIcfgContainer [2018-09-10 10:13:58,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:13:58,546 INFO L168 Benchmark]: Toolchain (without parser) took 6127.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -430.9 MB). Peak memory consumption was 326.7 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:58,547 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:13:58,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:58,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:13:58,549 INFO L168 Benchmark]: Boogie Preprocessor took 27.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:13:58,550 INFO L168 Benchmark]: RCFGBuilder took 705.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:58,551 INFO L168 Benchmark]: TraceAbstraction took 5099.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 365.7 MB). Peak memory consumption was 365.7 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:58,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 24.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 705.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5099.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 365.7 MB). Peak memory consumption was 365.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((1 <= cp && 0 <= c) && cp + 1 <= urilen) && 0 <= scheme - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (1 <= cp && cp + 1 <= urilen) && 0 <= scheme - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 1 error locations. SAFE Result, 5.0s OverallTime, 6 OverallIterations, 14 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 404 SDtfs, 99 SDslu, 998 SDs, 0 SdLazy, 321 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 556 GetRequests, 500 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 76 PreInvPairs, 104 NumberOfFragments, 317 HoareAnnotationTreeSize, 76 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 137 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 575 NumberOfCodeBlocks, 575 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 815 ConstructedInterpolants, 0 QuantifiedInterpolants, 86463 SizeOfPredicates, 14 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 2077/2172 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/apache-escape-absolute_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-13-58-572.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/apache-escape-absolute_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-13-58-572.csv Received shutdown request...