java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:42:52,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:42:52,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:42:52,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:42:52,570 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:42:52,571 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:42:52,573 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:42:52,576 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:42:52,578 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:42:52,586 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:42:52,587 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:42:52,588 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:42:52,589 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:42:52,593 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:42:52,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:42:52,595 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:42:52,596 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:42:52,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:42:52,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:42:52,608 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:42:52,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:42:52,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:42:52,612 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:42:52,612 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:42:52,613 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:42:52,613 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:42:52,614 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:42:52,615 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:42:52,616 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:42:52,618 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:42:52,619 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:42:52,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:42:52,620 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:42:52,620 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:42:52,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:42:52,622 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:42:52,622 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:42:52,645 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:42:52,645 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:42:52,646 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:42:52,646 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:42:52,647 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:42:52,647 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:42:52,647 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:42:52,647 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:42:52,648 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:42:52,648 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:42:52,648 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:42:52,648 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:42:52,648 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:42:52,649 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:42:52,649 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:42:52,649 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:42:52,649 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:42:52,649 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:42:52,650 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:42:52,650 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:42:52,650 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:42:52,650 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:42:52,650 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:42:52,650 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:42:52,651 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:42:52,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:42:52,651 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:42:52,651 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:42:52,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:42:52,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:42:52,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:42:52,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:42:52,727 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:42:52,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27_false-unreach-call.c [2018-11-06 19:42:52,795 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a258eba/1d838bf298b64fa5bf8ffd93e33a78f7/FLAG05a438c5c [2018-11-06 19:42:53,632 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:42:53,633 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label27_false-unreach-call.c [2018-11-06 19:42:53,674 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a258eba/1d838bf298b64fa5bf8ffd93e33a78f7/FLAG05a438c5c [2018-11-06 19:42:53,689 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a258eba/1d838bf298b64fa5bf8ffd93e33a78f7 [2018-11-06 19:42:53,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:42:53,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:42:53,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:42:53,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:42:53,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:42:53,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:42:53" (1/1) ... [2018-11-06 19:42:53,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:53, skipping insertion in model container [2018-11-06 19:42:53,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:42:53" (1/1) ... [2018-11-06 19:42:53,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:42:53,968 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:42:55,932 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:42:55,937 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:42:57,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:42:57,211 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:42:57,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57 WrapperNode [2018-11-06 19:42:57,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:42:57,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:42:57,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:42:57,214 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:42:57,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:57,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:42:58,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:42:58,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:42:58,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:42:58,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:58,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (1/1) ... [2018-11-06 19:42:59,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:42:59,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:42:59,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:42:59,018 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:42:59,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (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 [2018-11-06 19:42:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:42:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:42:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:43:14,951 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:43:14,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:14 BoogieIcfgContainer [2018-11-06 19:43:14,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:43:14,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:43:14,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:43:14,958 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:43:14,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:42:53" (1/3) ... [2018-11-06 19:43:14,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724f0855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:14, skipping insertion in model container [2018-11-06 19:43:14,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:42:57" (2/3) ... [2018-11-06 19:43:14,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724f0855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:14, skipping insertion in model container [2018-11-06 19:43:14,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:14" (3/3) ... [2018-11-06 19:43:14,962 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label27_false-unreach-call.c [2018-11-06 19:43:14,971 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:43:14,982 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:43:14,999 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:43:15,052 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:43:15,053 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:43:15,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:43:15,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:43:15,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:43:15,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:43:15,053 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:43:15,053 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:43:15,053 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:43:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:43:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-06 19:43:15,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:43:15,124 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:43:15,126 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:43:15,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:43:15,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1880720510, now seen corresponding path program 1 times [2018-11-06 19:43:15,383 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:43:15,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:43:15,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:15,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:43:15,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:43:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:43:15,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:43:15,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:43:15,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:43:15,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:43:15,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:43:15,773 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:43:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:43:38,982 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-11-06 19:43:38,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:43:38,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-06 19:43:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:43:39,035 INFO L225 Difference]: With dead ends: 6361 [2018-11-06 19:43:39,036 INFO L226 Difference]: Without dead ends: 4605 [2018-11-06 19:43:39,046 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:43:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-11-06 19:43:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-11-06 19:43:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-11-06 19:43:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-11-06 19:43:39,343 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 28 [2018-11-06 19:43:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:43:39,344 INFO L480 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-11-06 19:43:39,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:43:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-11-06 19:43:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-06 19:43:39,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:43:39,350 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:43:39,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:43:39,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:43:39,351 INFO L82 PathProgramCache]: Analyzing trace with hash -2127246618, now seen corresponding path program 1 times [2018-11-06 19:43:39,351 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:43:39,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:43:39,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:39,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:43:39,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:43:39,777 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:43:40,458 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 19:43:41,153 WARN L179 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 19:43:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:43:41,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:43:41,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:43:41,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:43:41,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:43:41,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:43:41,234 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-11-06 19:44:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:44:09,973 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-11-06 19:44:09,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:44:09,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-11-06 19:44:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:44:10,021 INFO L225 Difference]: With dead ends: 13170 [2018-11-06 19:44:10,021 INFO L226 Difference]: Without dead ends: 10024 [2018-11-06 19:44:10,028 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:44:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-11-06 19:44:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-11-06 19:44:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-11-06 19:44:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-11-06 19:44:10,199 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 96 [2018-11-06 19:44:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:44:10,200 INFO L480 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-11-06 19:44:10,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:44:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-11-06 19:44:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-06 19:44:10,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:10,209 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:44:10,209 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:10,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:10,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1184973211, now seen corresponding path program 1 times [2018-11-06 19:44:10,210 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:10,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:10,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:10,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:10,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:10,766 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:44:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-06 19:44:11,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:11,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:44:11,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:44:11,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:44:11,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:44:11,324 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-11-06 19:44:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:44:43,217 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-11-06 19:44:43,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:44:43,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-11-06 19:44:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:44:43,293 INFO L225 Difference]: With dead ends: 26878 [2018-11-06 19:44:43,293 INFO L226 Difference]: Without dead ends: 18228 [2018-11-06 19:44:43,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:44:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-11-06 19:44:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-11-06 19:44:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-11-06 19:44:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-11-06 19:44:43,806 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 304 [2018-11-06 19:44:43,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:44:43,806 INFO L480 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-11-06 19:44:43,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:44:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-11-06 19:44:43,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-11-06 19:44:43,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:43,817 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:44:43,817 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:43,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:43,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1745548543, now seen corresponding path program 1 times [2018-11-06 19:44:43,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:43,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:43,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:43,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:43,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:44,256 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 19:44:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 51 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:44:44,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:44:44,397 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 19:44:44,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:44,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:44:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:44:44,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:44:44,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:44:44,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:44:44,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:44:44,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:44:44,828 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-11-06 19:45:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:17,554 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-11-06 19:45:17,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:45:17,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-11-06 19:45:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:17,671 INFO L225 Difference]: With dead ends: 70982 [2018-11-06 19:45:17,672 INFO L226 Difference]: Without dead ends: 51391 [2018-11-06 19:45:17,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:45:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-11-06 19:45:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-11-06 19:45:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-11-06 19:45:18,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60472 transitions. [2018-11-06 19:45:18,549 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60472 transitions. Word has length 332 [2018-11-06 19:45:18,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:18,550 INFO L480 AbstractCegarLoop]: Abstraction has 51309 states and 60472 transitions. [2018-11-06 19:45:18,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:45:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60472 transitions. [2018-11-06 19:45:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-06 19:45:18,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:18,556 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:18,557 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:18,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash 687775351, now seen corresponding path program 1 times [2018-11-06 19:45:18,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:18,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:18,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:18,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:18,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 19:45:19,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:45:19,138 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:45:19,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:19,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:45:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:45:19,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:45:19,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:45:19,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:45:19,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:45:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:45:19,390 INFO L87 Difference]: Start difference. First operand 51309 states and 60472 transitions. Second operand 4 states. [2018-11-06 19:45:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:38,132 INFO L93 Difference]: Finished difference Result 184884 states and 220618 transitions. [2018-11-06 19:45:38,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:45:38,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2018-11-06 19:45:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:38,319 INFO L225 Difference]: With dead ends: 184884 [2018-11-06 19:45:38,319 INFO L226 Difference]: Without dead ends: 134943 [2018-11-06 19:45:38,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:45:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134943 states. [2018-11-06 19:45:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134943 to 86821. [2018-11-06 19:45:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86821 states. [2018-11-06 19:45:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86821 states to 86821 states and 101826 transitions. [2018-11-06 19:45:40,289 INFO L78 Accepts]: Start accepts. Automaton has 86821 states and 101826 transitions. Word has length 342 [2018-11-06 19:45:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:40,290 INFO L480 AbstractCegarLoop]: Abstraction has 86821 states and 101826 transitions. [2018-11-06 19:45:40,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:45:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 86821 states and 101826 transitions. [2018-11-06 19:45:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2018-11-06 19:45:40,306 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:40,307 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:40,307 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:40,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash 675887132, now seen corresponding path program 1 times [2018-11-06 19:45:40,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:40,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:40,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:40,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:40,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 453 proven. 4 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-11-06 19:45:41,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:45:41,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 19:45:41,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:41,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:45:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-11-06 19:45:42,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:45:42,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:45:42,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:45:42,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:45:42,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:45:42,108 INFO L87 Difference]: Start difference. First operand 86821 states and 101826 transitions. Second operand 5 states. [2018-11-06 19:45:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:59,873 INFO L93 Difference]: Finished difference Result 183205 states and 213687 transitions. [2018-11-06 19:45:59,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:45:59,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 645 [2018-11-06 19:45:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:59,989 INFO L225 Difference]: With dead ends: 183205 [2018-11-06 19:45:59,989 INFO L226 Difference]: Without dead ends: 93651 [2018-11-06 19:46:00,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:46:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93651 states. [2018-11-06 19:46:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93651 to 90917. [2018-11-06 19:46:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90917 states. [2018-11-06 19:46:01,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90917 states to 90917 states and 100330 transitions. [2018-11-06 19:46:01,516 INFO L78 Accepts]: Start accepts. Automaton has 90917 states and 100330 transitions. Word has length 645 [2018-11-06 19:46:01,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:01,516 INFO L480 AbstractCegarLoop]: Abstraction has 90917 states and 100330 transitions. [2018-11-06 19:46:01,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:46:01,516 INFO L276 IsEmpty]: Start isEmpty. Operand 90917 states and 100330 transitions. [2018-11-06 19:46:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-11-06 19:46:01,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:01,538 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:01,538 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:01,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash 452939881, now seen corresponding path program 1 times [2018-11-06 19:46:01,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:01,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:01,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:01,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:01,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:02,207 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-06 19:46:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 19:46:02,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:02,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:46:02,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:46:02,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:46:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:46:02,418 INFO L87 Difference]: Start difference. First operand 90917 states and 100330 transitions. Second operand 5 states. [2018-11-06 19:46:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:19,914 INFO L93 Difference]: Finished difference Result 283097 states and 316959 transitions. [2018-11-06 19:46:19,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:46:19,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 729 [2018-11-06 19:46:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:20,156 INFO L225 Difference]: With dead ends: 283097 [2018-11-06 19:46:20,156 INFO L226 Difference]: Without dead ends: 193548 [2018-11-06 19:46:20,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:46:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193548 states. [2018-11-06 19:46:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193548 to 122342. [2018-11-06 19:46:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122342 states. [2018-11-06 19:46:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122342 states to 122342 states and 136739 transitions. [2018-11-06 19:46:22,470 INFO L78 Accepts]: Start accepts. Automaton has 122342 states and 136739 transitions. Word has length 729 [2018-11-06 19:46:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:22,471 INFO L480 AbstractCegarLoop]: Abstraction has 122342 states and 136739 transitions. [2018-11-06 19:46:22,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:46:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 122342 states and 136739 transitions. [2018-11-06 19:46:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-11-06 19:46:22,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:22,482 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:22,482 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:22,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:22,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1941590031, now seen corresponding path program 1 times [2018-11-06 19:46:22,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:22,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:22,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:22,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:22,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 19:46:23,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:23,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:46:23,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:23,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:23,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:23,457 INFO L87 Difference]: Start difference. First operand 122342 states and 136739 transitions. Second operand 4 states. [2018-11-06 19:46:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:38,296 INFO L93 Difference]: Finished difference Result 360967 states and 407433 transitions. [2018-11-06 19:46:38,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:46:38,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 890 [2018-11-06 19:46:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:38,575 INFO L225 Difference]: With dead ends: 360967 [2018-11-06 19:46:38,575 INFO L226 Difference]: Without dead ends: 239993 [2018-11-06 19:46:39,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239993 states. [2018-11-06 19:46:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239993 to 230269. [2018-11-06 19:46:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230269 states. [2018-11-06 19:46:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230269 states to 230269 states and 254700 transitions. [2018-11-06 19:46:41,523 INFO L78 Accepts]: Start accepts. Automaton has 230269 states and 254700 transitions. Word has length 890 [2018-11-06 19:46:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:41,525 INFO L480 AbstractCegarLoop]: Abstraction has 230269 states and 254700 transitions. [2018-11-06 19:46:41,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:46:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 230269 states and 254700 transitions. [2018-11-06 19:46:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2018-11-06 19:46:41,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:41,543 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:41,543 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:41,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:41,544 INFO L82 PathProgramCache]: Analyzing trace with hash -61113788, now seen corresponding path program 1 times [2018-11-06 19:46:41,544 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:41,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:41,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:41,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-06 19:46:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 508 proven. 72 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-11-06 19:46:45,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:46:45,633 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:46:45,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:45,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:46:45,914 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 19:46:46,115 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:46:46,115 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:46:46,121 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:46:46,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:46:46 BoogieIcfgContainer [2018-11-06 19:46:46,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:46:46,122 INFO L168 Benchmark]: Toolchain (without parser) took 232421.22 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 837.7 MB in the end (delta: 561.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:46:46,123 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. [2018-11-06 19:46:46,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3510.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.5 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:46,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 1094.41 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 MB). Free memory was 996.5 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:46,128 INFO L168 Benchmark]: Boogie Preprocessor took 708.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 103.4 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:46,131 INFO L168 Benchmark]: RCFGBuilder took 15935.14 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 271.1 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 505.2 MB). Peak memory consumption was 776.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:46,134 INFO L168 Benchmark]: TraceAbstraction took 211167.45 ms. Allocated memory was 2.6 GB in the beginning and 3.0 GB in the end (delta: 403.2 MB). Free memory was 1.5 GB in the beginning and 837.7 MB in the end (delta: 675.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:46:46,141 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 3510.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.5 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1094.41 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 MB). Free memory was 996.5 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 708.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 103.4 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15935.14 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 271.1 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 505.2 MB). Peak memory consumption was 776.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211167.45 ms. Allocated memory was 2.6 GB in the beginning and 3.0 GB in the end (delta: 403.2 MB). Free memory was 1.5 GB in the beginning and 837.7 MB in the end (delta: 675.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was analyzing trace of length 980 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 4 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 187.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9783 SDtfs, 47434 SDslu, 4414 SDs, 0 SdLazy, 101758 SolverSat, 21343 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 153.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1370 GetRequests, 1328 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230269occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 137432 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 4685 NumberOfCodeBlocks, 4685 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4674 ConstructedInterpolants, 0 QuantifiedInterpolants, 7721705 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1613 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2659/2732 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown