java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:20:25,572 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:20:25,574 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:20:25,587 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:20:25,587 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:20:25,588 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:20:25,591 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:20:25,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:20:25,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:20:25,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:20:25,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:20:25,599 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:20:25,600 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:20:25,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:20:25,603 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:20:25,604 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:20:25,608 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:20:25,612 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:20:25,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:20:25,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:20:25,625 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:20:25,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:20:25,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 18:20:25,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 18:20:25,633 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 18:20:25,634 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 18:20:25,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 18:20:25,636 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 18:20:25,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 18:20:25,638 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 18:20:25,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 18:20:25,640 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 18:20:25,640 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 18:20:25,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 18:20:25,641 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 18:20:25,642 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 18:20:25,642 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:20:25,658 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:20:25,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:20:25,659 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:20:25,659 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:20:25,659 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:20:25,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:20:25,660 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:20:25,660 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:20:25,660 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:20:25,660 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:20:25,660 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:20:25,661 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:20:25,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:20:25,662 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:20:25,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:20:25,662 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:20:25,662 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:20:25,662 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:20:25,662 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:20:25,663 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:20:25,663 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:20:25,663 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:20:25,663 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:20:25,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:20:25,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:20:25,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:20:25,664 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:20:25,664 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:20:25,664 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:20:25,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:20:25,665 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:20:25,665 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:20:25,665 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:20:25,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:20:25,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:20:25,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:20:25,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:20:25,744 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:20:25,744 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-07-23 18:20:26,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c378715/7e70b07bc8d34099ba86e69e2d3b5a89/FLAG3f4aab8b6 [2018-07-23 18:20:26,219 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:20:26,220 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-07-23 18:20:26,228 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c378715/7e70b07bc8d34099ba86e69e2d3b5a89/FLAG3f4aab8b6 [2018-07-23 18:20:26,246 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c378715/7e70b07bc8d34099ba86e69e2d3b5a89 [2018-07-23 18:20:26,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:20:26,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:20:26,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:20:26,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:20:26,270 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:20:26,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53840882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26, skipping insertion in model container [2018-07-23 18:20:26,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,445 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:20:26,486 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:20:26,503 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:20:26,510 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:20:26,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26 WrapperNode [2018-07-23 18:20:26,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:20:26,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:20:26,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:20:26,525 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:20:26,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:20:26,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:20:26,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:20:26,549 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:20:26,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... [2018-07-23 18:20:26,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:20:26,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:20:26,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:20:26,573 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:20:26,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:20:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:20:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:20:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondet [2018-07-23 18:20:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondet [2018-07-23 18:20:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:20:26,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:20:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:20:26,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:20:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assert [2018-07-23 18:20:26,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assert [2018-07-23 18:20:27,077 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:20:27,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:20:27 BoogieIcfgContainer [2018-07-23 18:20:27,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:20:27,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:20:27,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:20:27,082 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:20:27,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:20:26" (1/3) ... [2018-07-23 18:20:27,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9280d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:20:27, skipping insertion in model container [2018-07-23 18:20:27,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:20:26" (2/3) ... [2018-07-23 18:20:27,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9280d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:20:27, skipping insertion in model container [2018-07-23 18:20:27,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:20:27" (3/3) ... [2018-07-23 18:20:27,086 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call.c [2018-07-23 18:20:27,096 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:20:27,104 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:20:27,156 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:20:27,157 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:20:27,157 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:20:27,157 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:20:27,157 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:20:27,158 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:20:27,158 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:20:27,158 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:20:27,158 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:20:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-07-23 18:20:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-23 18:20:27,183 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:27,184 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:27,185 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:27,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1030098894, now seen corresponding path program 1 times [2018-07-23 18:20:27,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:27,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:27,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:27,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:27,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:27,325 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:20:27,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 18:20:27,326 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:27,329 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-23 18:20:27,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-23 18:20:27,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 18:20:27,344 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-07-23 18:20:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:27,366 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2018-07-23 18:20:27,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-23 18:20:27,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-07-23 18:20:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:27,378 INFO L225 Difference]: With dead ends: 44 [2018-07-23 18:20:27,378 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 18:20:27,382 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 18:20:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 18:20:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 18:20:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 18:20:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-07-23 18:20:27,423 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 19 [2018-07-23 18:20:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:27,424 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-07-23 18:20:27,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-23 18:20:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-07-23 18:20:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 18:20:27,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:27,425 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:27,426 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1176183033, now seen corresponding path program 1 times [2018-07-23 18:20:27,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:27,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:27,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:27,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:27,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:27,566 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:20:27,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:20:27,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:27,574 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:20:27,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:20:27,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:20:27,580 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2018-07-23 18:20:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:27,778 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2018-07-23 18:20:27,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:20:27,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-07-23 18:20:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:27,781 INFO L225 Difference]: With dead ends: 46 [2018-07-23 18:20:27,781 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 18:20:27,782 INFO L573 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 [2018-07-23 18:20:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 18:20:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-23 18:20:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 18:20:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-07-23 18:20:27,795 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 20 [2018-07-23 18:20:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:27,796 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-07-23 18:20:27,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:20:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-07-23 18:20:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 18:20:27,797 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:27,798 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:27,798 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:27,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1045124110, now seen corresponding path program 1 times [2018-07-23 18:20:27,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:27,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:27,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:27,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:27,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:27,899 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:27,899 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:27,900 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-07-23 18:20:27,905 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-07-23 18:20:27,957 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:27,957 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:28,179 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:28,181 INFO L272 AbstractInterpreter]: Visited 18 different actions 66 times. Merged at 4 different actions 38 times. Widened at 1 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-07-23 18:20:28,205 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:28,313 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 62.04% of their original sizes. [2018-07-23 18:20:28,313 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:28,621 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:28,623 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:28,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-07-23 18:20:28,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:28,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:20:28,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:20:28,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:20:28,624 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 6 states. [2018-07-23 18:20:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:29,196 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2018-07-23 18:20:29,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 18:20:29,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-07-23 18:20:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:29,201 INFO L225 Difference]: With dead ends: 58 [2018-07-23 18:20:29,202 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 18:20:29,204 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:20:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 18:20:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2018-07-23 18:20:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-23 18:20:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-07-23 18:20:29,219 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 24 [2018-07-23 18:20:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:29,220 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-07-23 18:20:29,220 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:20:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-07-23 18:20:29,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 18:20:29,223 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:29,223 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:29,224 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:29,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1102382412, now seen corresponding path program 1 times [2018-07-23 18:20:29,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:29,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:29,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:29,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:29,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:29,324 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:29,325 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:29,325 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-07-23 18:20:29,325 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-07-23 18:20:29,328 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:29,328 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:29,377 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:29,381 INFO L272 AbstractInterpreter]: Visited 22 different actions 60 times. Merged at 4 different actions 30 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-07-23 18:20:29,403 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:29,497 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 60.23% of their original sizes. [2018-07-23 18:20:29,497 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:29,926 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:29,926 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:29,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-07-23 18:20:29,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:29,927 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 18:20:29,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 18:20:29,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:20:29,929 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 10 states. [2018-07-23 18:20:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:30,758 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2018-07-23 18:20:30,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 18:20:30,760 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-07-23 18:20:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:30,761 INFO L225 Difference]: With dead ends: 66 [2018-07-23 18:20:30,761 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 18:20:30,762 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-23 18:20:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 18:20:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2018-07-23 18:20:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-23 18:20:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-07-23 18:20:30,776 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 24 [2018-07-23 18:20:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:30,776 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-07-23 18:20:30,776 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 18:20:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-07-23 18:20:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 18:20:30,778 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:30,778 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:30,778 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:30,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1438151120, now seen corresponding path program 1 times [2018-07-23 18:20:30,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:30,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:30,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:30,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:30,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:30,850 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:30,850 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:30,850 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-07-23 18:20:30,851 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-07-23 18:20:30,853 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:30,853 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:30,861 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:30,861 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-07-23 18:20:30,890 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:30,936 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 67.65% of their original sizes. [2018-07-23 18:20:30,937 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:31,251 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:31,252 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:31,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-07-23 18:20:31,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:31,253 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:20:31,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:20:31,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:20:31,254 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 6 states. [2018-07-23 18:20:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:31,761 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2018-07-23 18:20:31,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 18:20:31,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-07-23 18:20:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:31,764 INFO L225 Difference]: With dead ends: 71 [2018-07-23 18:20:31,764 INFO L226 Difference]: Without dead ends: 54 [2018-07-23 18:20:31,765 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:20:31,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-23 18:20:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2018-07-23 18:20:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 18:20:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2018-07-23 18:20:31,778 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 24 [2018-07-23 18:20:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:31,778 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2018-07-23 18:20:31,778 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:20:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2018-07-23 18:20:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 18:20:31,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:31,780 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:31,780 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:31,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1472263337, now seen corresponding path program 1 times [2018-07-23 18:20:31,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:31,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:31,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:31,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:31,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:31,891 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:31,891 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:31,891 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-07-23 18:20:31,892 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-07-23 18:20:31,893 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:31,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:31,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:31,958 INFO L272 AbstractInterpreter]: Visited 23 different actions 100 times. Merged at 6 different actions 54 times. Widened at 1 different actions 8 times. Found 14 fixpoints after 5 different actions. Largest state had 8 variables. [2018-07-23 18:20:31,975 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:32,034 INFO L232 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 58.01% of their original sizes. [2018-07-23 18:20:32,035 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:32,760 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:32,760 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:32,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2018-07-23 18:20:32,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:32,761 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 18:20:32,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 18:20:32,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:20:32,762 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 12 states. [2018-07-23 18:20:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:33,478 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2018-07-23 18:20:33,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 18:20:33,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-07-23 18:20:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:33,480 INFO L225 Difference]: With dead ends: 78 [2018-07-23 18:20:33,480 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 18:20:33,481 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:20:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 18:20:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2018-07-23 18:20:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-23 18:20:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2018-07-23 18:20:33,499 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 28 [2018-07-23 18:20:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:33,499 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2018-07-23 18:20:33,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 18:20:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2018-07-23 18:20:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 18:20:33,501 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:33,501 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:33,501 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:33,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1415005035, now seen corresponding path program 1 times [2018-07-23 18:20:33,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:33,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:33,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:33,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:33,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:33,597 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:33,597 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:33,597 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-07-23 18:20:33,597 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-07-23 18:20:33,599 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:33,600 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:33,658 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:33,658 INFO L272 AbstractInterpreter]: Visited 23 different actions 98 times. Merged at 8 different actions 52 times. Widened at 1 different actions 7 times. Found 12 fixpoints after 3 different actions. Largest state had 8 variables. [2018-07-23 18:20:33,679 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:33,717 INFO L232 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 58.01% of their original sizes. [2018-07-23 18:20:33,717 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:34,089 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:34,090 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:34,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2018-07-23 18:20:34,090 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:34,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 18:20:34,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 18:20:34,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:20:34,091 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 12 states. [2018-07-23 18:20:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:34,958 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2018-07-23 18:20:34,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 18:20:34,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-07-23 18:20:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:34,960 INFO L225 Difference]: With dead ends: 69 [2018-07-23 18:20:34,960 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 18:20:34,961 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:20:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 18:20:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2018-07-23 18:20:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 18:20:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2018-07-23 18:20:34,974 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 28 [2018-07-23 18:20:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:34,975 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2018-07-23 18:20:34,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 18:20:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2018-07-23 18:20:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 18:20:34,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:34,976 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:20:34,976 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1416852077, now seen corresponding path program 1 times [2018-07-23 18:20:34,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:34,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:34,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:34,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:34,978 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:35,037 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:35,038 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:35,038 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-07-23 18:20:35,038 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [42], [46], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-07-23 18:20:35,040 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:35,040 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:35,084 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-23 18:20:35,084 INFO L272 AbstractInterpreter]: Visited 24 different actions 96 times. Merged at 7 different actions 51 times. Widened at 1 different actions 7 times. Found 13 fixpoints after 4 different actions. Largest state had 8 variables. [2018-07-23 18:20:35,118 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-23 18:20:35,119 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:35,119 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:20:35,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:35,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:20:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:35,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:20:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:35,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:20:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:20:35,343 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:35,343 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-23 18:20:35,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:35,361 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:20:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:35,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:20:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 18:20:35,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:20:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 18:20:35,567 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-07-23 18:20:35,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5] total 12 [2018-07-23 18:20:35,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:35,568 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 18:20:35,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 18:20:35,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:20:35,569 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 4 states. [2018-07-23 18:20:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:35,799 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2018-07-23 18:20:35,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:20:35,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-07-23 18:20:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:35,806 INFO L225 Difference]: With dead ends: 102 [2018-07-23 18:20:35,806 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 18:20:35,809 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:20:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 18:20:35,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2018-07-23 18:20:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 18:20:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-07-23 18:20:35,827 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 28 [2018-07-23 18:20:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:35,827 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-07-23 18:20:35,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 18:20:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-07-23 18:20:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-23 18:20:35,829 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:35,829 INFO L353 BasicCegarLoop]: trace histogram [4, 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] [2018-07-23 18:20:35,829 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash 992707110, now seen corresponding path program 1 times [2018-07-23 18:20:35,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:35,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:35,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:35,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:35,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 18:20:35,887 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:35,887 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:35,887 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-07-23 18:20:35,887 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [40], [42], [48], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71], [72], [73] [2018-07-23 18:20:35,889 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:35,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:36,010 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:36,010 INFO L272 AbstractInterpreter]: Visited 26 different actions 349 times. Merged at 10 different actions 193 times. Widened at 3 different actions 36 times. Found 20 fixpoints after 5 different actions. Largest state had 8 variables. [2018-07-23 18:20:36,049 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:36,098 INFO L232 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 49.32% of their original sizes. [2018-07-23 18:20:36,099 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:36,525 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:36,525 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:36,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-07-23 18:20:36,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:36,526 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 18:20:36,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 18:20:36,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:20:36,526 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 14 states. [2018-07-23 18:20:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:37,745 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2018-07-23 18:20:37,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 18:20:37,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2018-07-23 18:20:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:37,747 INFO L225 Difference]: With dead ends: 112 [2018-07-23 18:20:37,747 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 18:20:37,748 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-07-23 18:20:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 18:20:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2018-07-23 18:20:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-23 18:20:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2018-07-23 18:20:37,767 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 39 [2018-07-23 18:20:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:37,767 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2018-07-23 18:20:37,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 18:20:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2018-07-23 18:20:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-23 18:20:37,770 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:37,770 INFO L353 BasicCegarLoop]: trace histogram [4, 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] [2018-07-23 18:20:37,770 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1385734120, now seen corresponding path program 1 times [2018-07-23 18:20:37,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:37,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:37,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:37,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:37,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 18:20:37,901 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:37,901 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:37,901 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-07-23 18:20:37,901 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [40], [42], [48], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71], [72], [73] [2018-07-23 18:20:37,903 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:37,903 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:38,168 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:20:38,168 INFO L272 AbstractInterpreter]: Visited 27 different actions 556 times. Merged at 12 different actions 276 times. Widened at 3 different actions 42 times. Found 77 fixpoints after 9 different actions. Largest state had 8 variables. [2018-07-23 18:20:38,212 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:20:38,252 INFO L232 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 50.68% of their original sizes. [2018-07-23 18:20:38,252 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:20:38,703 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:20:38,704 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:38,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-07-23 18:20:38,704 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:38,705 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 18:20:38,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 18:20:38,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2018-07-23 18:20:38,706 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand 17 states. [2018-07-23 18:20:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:39,493 INFO L93 Difference]: Finished difference Result 106 states and 129 transitions. [2018-07-23 18:20:39,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 18:20:39,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2018-07-23 18:20:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:39,494 INFO L225 Difference]: With dead ends: 106 [2018-07-23 18:20:39,495 INFO L226 Difference]: Without dead ends: 104 [2018-07-23 18:20:39,495 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-07-23 18:20:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-23 18:20:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2018-07-23 18:20:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-23 18:20:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2018-07-23 18:20:39,514 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 39 [2018-07-23 18:20:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:39,517 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2018-07-23 18:20:39,518 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 18:20:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2018-07-23 18:20:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-23 18:20:39,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:20:39,519 INFO L353 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2018-07-23 18:20:39,519 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:20:39,520 INFO L82 PathProgramCache]: Analyzing trace with hash -819542281, now seen corresponding path program 1 times [2018-07-23 18:20:39,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:20:39,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:39,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:39,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:20:39,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:20:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:39,753 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-07-23 18:20:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-23 18:20:39,771 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:39,771 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:20:39,772 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-07-23 18:20:39,772 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [40], [42], [46], [48], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71], [72], [73] [2018-07-23 18:20:39,773 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:20:39,774 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:20:40,375 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-23 18:20:40,375 INFO L272 AbstractInterpreter]: Visited 29 different actions 1113 times. Merged at 13 different actions 456 times. Widened at 3 different actions 72 times. Found 181 fixpoints after 11 different actions. Largest state had 8 variables. [2018-07-23 18:20:40,414 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-23 18:20:40,414 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:20:40,414 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:20:40,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:20:40,430 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:20:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:20:40,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:20:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-23 18:20:40,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:20:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-23 18:20:40,617 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:20:40,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-07-23 18:20:40,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:20:40,617 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:20:40,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:20:40,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:20:40,618 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 3 states. [2018-07-23 18:20:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:20:40,648 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2018-07-23 18:20:40,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:20:40,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-07-23 18:20:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:20:40,649 INFO L225 Difference]: With dead ends: 110 [2018-07-23 18:20:40,649 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 18:20:40,650 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:20:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 18:20:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 18:20:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 18:20:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 18:20:40,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-07-23 18:20:40,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:20:40,652 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 18:20:40,652 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:20:40,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 18:20:40,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 18:20:40,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 18:20:40,916 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 93 [2018-07-23 18:20:40,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 18:20:41,164 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 1 [2018-07-23 18:20:42,265 WARN L169 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 189 DAG size of output: 58 [2018-07-23 18:20:42,419 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 40 [2018-07-23 18:20:42,752 WARN L169 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 45 [2018-07-23 18:20:42,755 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-23 18:20:42,755 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-07-23 18:20:42,755 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-07-23 18:20:42,755 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondetENTRY(lines 15 19) the Hoare annotation is: true [2018-07-23 18:20:42,755 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondetFINAL(lines 15 19) no Hoare annotation was computed. [2018-07-23 18:20:42,755 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondetEXIT(lines 15 19) no Hoare annotation was computed. [2018-07-23 18:20:42,755 INFO L417 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (* 2 ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0))) (and (<= .cse0 4294967294) (<= 0 (+ .cse0 4294967296)))) [2018-07-23 18:20:42,756 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point L24(lines 24 34) no Hoare annotation was computed. [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point L26(lines 26 27) no Hoare annotation was computed. [2018-07-23 18:20:42,756 INFO L417 ceAbstractionStarter]: At program point L31'(lines 31 32) the Hoare annotation is: (let ((.cse0 (* 2 |old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0)|))) (or (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0) (and (<= 200000 (+ main_~st~0 main_~c~0)) (<= ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 (+ main_~st~0 2147483646)) (<= 0 (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 main_~st~0 2147483647)) (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0) (<= (+ main_~st~0 199999) main_~c~0) (<= (* 2 main_~c~0) 400000) (<= (+ main_~st~0 1) main_~a~0) (<= 2 (+ main_~a~0 main_~st~0))))) [2018-07-23 18:20:42,756 INFO L421 ceAbstractionStarter]: For program point L26''''(lines 24 34) no Hoare annotation was computed. [2018-07-23 18:20:42,757 INFO L421 ceAbstractionStarter]: For program point L24''(lines 21 35) no Hoare annotation was computed. [2018-07-23 18:20:42,757 INFO L417 ceAbstractionStarter]: At program point L33(lines 24 34) the Hoare annotation is: (let ((.cse0 (* 2 |old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0)|))) (or (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0) (and (<= 200000 (+ main_~st~0 main_~c~0)) (<= ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 (+ main_~st~0 2147483646)) (<= 0 (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 main_~st~0 2147483647)) (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0) (<= (+ main_~st~0 199999) main_~c~0) (<= (* 2 main_~c~0) 400000) (<= (+ main_~st~0 1) main_~a~0) (<= 2 (+ main_~a~0 main_~st~0))) (and (or (and (<= ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 main_~a~0) (<= 1 (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 main_~c~0)) (<= main_~c~0 (+ main_~a~0 1))) (<= main_~c~0 main_~a~0)) (<= main_~b~0 main_~c~0) (<= 0 (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 main_~c~0 2147483648)) (= main_~b~0 0) (<= ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 (+ main_~b~0 2147483647)) (<= (+ main_~a~0 main_~b~0) 0)))) [2018-07-23 18:20:42,757 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 21 35) no Hoare annotation was computed. [2018-07-23 18:20:42,757 INFO L417 ceAbstractionStarter]: At program point mainENTRY(lines 21 35) the Hoare annotation is: (let ((.cse0 (* 2 |old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0)|))) (or (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0) (let ((.cse1 (* 2 ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0))) (and (<= .cse1 4294967294) (<= 0 (+ .cse1 4294967296)))))) [2018-07-23 18:20:42,757 INFO L421 ceAbstractionStarter]: For program point L26''(lines 26 27) no Hoare annotation was computed. [2018-07-23 18:20:42,757 INFO L421 ceAbstractionStarter]: For program point L28'(lines 24 34) no Hoare annotation was computed. [2018-07-23 18:20:42,758 INFO L417 ceAbstractionStarter]: At program point L26'''(lines 26 27) the Hoare annotation is: (let ((.cse2 (* 2 main_~st~0))) (let ((.cse0 (* 2 |old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0)|)) (.cse1 (<= .cse2 2)) (.cse3 (<= 1 (+ main_~st~0 main_~c~0))) (.cse4 (<= main_~a~0 main_~b~0)) (.cse5 (<= main_~b~0 main_~a~0)) (.cse6 (<= (* 2 main_~c~0) 400000)) (.cse7 (<= main_~st~0 (+ main_~b~0 1)))) (or (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0) (and .cse1 (<= 0 .cse2) .cse3 (<= 0 (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 main_~st~0 2147483647)) (<= (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 1) main_~c~0) .cse4 .cse5 .cse6 .cse7 (<= 0 (+ main_~a~0 main_~st~0))) (and .cse1 .cse3 .cse4 .cse5 (<= (* 2 ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0) 4294967294) (<= main_~st~0 (+ ~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last~0 2147483649)) .cse6 (<= 1 main_~st~0) .cse7)))) [2018-07-23 18:20:42,758 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-07-23 18:20:42,758 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2018-07-23 18:20:42,758 INFO L421 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-07-23 18:20:42,758 INFO L421 ceAbstractionStarter]: For program point L9(lines 9 11) no Hoare annotation was computed. [2018-07-23 18:20:42,758 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2018-07-23 18:20:42,759 INFO L421 ceAbstractionStarter]: For program point L9''(lines 8 13) no Hoare annotation was computed. [2018-07-23 18:20:42,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:20:42 BoogieIcfgContainer [2018-07-23 18:20:42,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:20:42,772 INFO L168 Benchmark]: Toolchain (without parser) took 16511.90 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -598.4 MB). Peak memory consumption was 461.7 MB. Max. memory is 7.1 GB. [2018-07-23 18:20:42,773 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. [2018-07-23 18:20:42,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.40 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. [2018-07-23 18:20:42,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.82 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. [2018-07-23 18:20:42,775 INFO L168 Benchmark]: Boogie Preprocessor took 23.47 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. [2018-07-23 18:20:42,776 INFO L168 Benchmark]: RCFGBuilder took 504.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-07-23 18:20:42,777 INFO L168 Benchmark]: TraceAbstraction took 15692.99 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 310.4 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 193.3 MB). Peak memory consumption was 503.6 MB. Max. memory is 7.1 GB. [2018-07-23 18:20:42,781 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 261.40 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 23.82 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 23.47 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 504.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15692.99 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 310.4 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 193.3 MB). Peak memory consumption was 503.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 24]: Loop Invariant Derived loop invariant: ((2 * \old(__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last) + 4294967296 < 0 || 4294967294 < 2 * \old(__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last)) || ((((((((200000 <= st + c && __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last <= st + 2147483646) && 0 <= __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last + st + 2147483647) && a <= b) && b <= a) && st + 199999 <= c) && 2 * c <= 400000) && st + 1 <= a) && 2 <= a + st)) || ((((((((__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last <= a && 1 <= __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last + c) && c <= a + 1) || c <= a) && b <= c) && 0 <= __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last + c + 2147483648) && b == 0) && __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last <= b + 2147483647) && a + b <= 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((2 * \old(__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last) + 4294967296 < 0 || 4294967294 < 2 * \old(__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last)) || (((((((((2 * st <= 2 && 0 <= 2 * st) && 1 <= st + c) && 0 <= __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last + st + 2147483647) && __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last + 1 <= c) && a <= b) && b <= a) && 2 * c <= 400000) && st <= b + 1) && 0 <= a + st)) || ((((((((2 * st <= 2 && 1 <= st + c) && a <= b) && b <= a) && 2 * __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last <= 4294967294) && st <= __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__last + 2147483649) && 2 * c <= 400000) && 1 <= st) && st <= b + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. SAFE Result, 15.6s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 6.0s AutomataDifference, 0.0s DeadEndRemovalTime, 2.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 270 SDtfs, 234 SDslu, 639 SDs, 0 SdLazy, 296 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 14 DeclaredPredicates, 417 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 9 AbstIntIterations, 7 AbstIntStrong, 0.9001256281407035 AbsIntWeakeningRatio, 0.5728643216080402 AbsIntAvgWeakeningVarsNumRemoved, 19.452261306532662 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 87 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 23 PreInvPairs, 40 NumberOfFragments, 305 HoareAnnotationTreeSize, 23 FomulaSimplifications, 18269 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1177 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 24349 SizeOfPredicates, 5 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 151/203 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/nested_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-20-42-797.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-20-42-797.csv Received shutdown request...