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/Problem17_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:47:22,965 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:47:22,967 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:47:22,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:47:22,981 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:47:22,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:47:22,983 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:47:22,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:47:22,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:47:22,989 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:47:22,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:47:22,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:47:22,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:47:22,992 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:47:22,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:47:22,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:47:22,997 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:47:22,999 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:47:23,001 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:47:23,003 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:47:23,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:47:23,005 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:47:23,007 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:47:23,017 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 21:47:23,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:47:23,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:47:23,040 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:47:23,041 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:47:23,042 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:47:23,042 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:47:23,042 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:47:23,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:47:23,042 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:47:23,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:47:23,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:47:23,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:47:23,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:47:23,043 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:47:23,043 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:47:23,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:47:23,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:47:23,045 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:47:23,045 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:47:23,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:47:23,046 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:47:23,046 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:47:23,046 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:47:23,046 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:47:23,047 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:47:23,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:47:23,047 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:47:23,047 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:47:23,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:47:23,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:47:23,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:47:23,130 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:47:23,132 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:47:23,133 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-11-06 21:47:23,202 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df10d4aec/d95ebea333e047b48abd66ba99d4cdcf/FLAG021424915 [2018-11-06 21:47:23,942 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:47:23,943 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-11-06 21:47:23,969 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df10d4aec/d95ebea333e047b48abd66ba99d4cdcf/FLAG021424915 [2018-11-06 21:47:23,985 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df10d4aec/d95ebea333e047b48abd66ba99d4cdcf [2018-11-06 21:47:23,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:47:23,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:47:23,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:47:23,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:47:24,003 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:47:24,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:47:23" (1/1) ... [2018-11-06 21:47:24,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f12b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:24, skipping insertion in model container [2018-11-06 21:47:24,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:47:23" (1/1) ... [2018-11-06 21:47:24,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:47:24,127 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:47:25,151 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:47:25,155 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:47:25,552 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:47:25,578 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:47:25,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25 WrapperNode [2018-11-06 21:47:25,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:47:25,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:47:25,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:47:25,581 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:47:25,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:25,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:47:26,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:47:26,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:47:26,155 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:47:26,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (1/1) ... [2018-11-06 21:47:26,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:47:26,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:47:26,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:47:26,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:47:26,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (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 21:47:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:47:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:47:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:47:34,927 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:47:34,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:47:34 BoogieIcfgContainer [2018-11-06 21:47:34,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:47:34,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:47:34,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:47:34,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:47:34,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:47:23" (1/3) ... [2018-11-06 21:47:34,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647b354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:47:34, skipping insertion in model container [2018-11-06 21:47:34,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:25" (2/3) ... [2018-11-06 21:47:34,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647b354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:47:34, skipping insertion in model container [2018-11-06 21:47:34,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:47:34" (3/3) ... [2018-11-06 21:47:34,942 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45_true-unreach-call.c [2018-11-06 21:47:34,951 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:47:34,968 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:47:34,988 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:47:35,045 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:47:35,045 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:47:35,046 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:47:35,046 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:47:35,046 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:47:35,046 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:47:35,046 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:47:35,046 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:47:35,046 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:47:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 21:47:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-06 21:47:35,088 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:47:35,091 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, 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 21:47:35,094 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:47:35,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:47:35,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1316472986, now seen corresponding path program 1 times [2018-11-06 21:47:35,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:47:35,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:47:35,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:47:35,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:47:35,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:47:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:47:35,616 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 21:47:35,634 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 21:47:35,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:47:35,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:47:35,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:47:35,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:47:35,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:47:35,661 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 21:47:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:47:44,604 INFO L93 Difference]: Finished difference Result 2078 states and 3883 transitions. [2018-11-06 21:47:44,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:47:44,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-06 21:47:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:47:44,637 INFO L225 Difference]: With dead ends: 2078 [2018-11-06 21:47:44,638 INFO L226 Difference]: Without dead ends: 1480 [2018-11-06 21:47:44,644 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 21:47:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2018-11-06 21:47:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1019. [2018-11-06 21:47:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2018-11-06 21:47:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1572 transitions. [2018-11-06 21:47:44,757 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1572 transitions. Word has length 51 [2018-11-06 21:47:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:47:44,757 INFO L480 AbstractCegarLoop]: Abstraction has 1019 states and 1572 transitions. [2018-11-06 21:47:44,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:47:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1572 transitions. [2018-11-06 21:47:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-06 21:47:44,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:47:44,763 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:47:44,764 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:47:44,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:47:44,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1434973106, now seen corresponding path program 1 times [2018-11-06 21:47:44,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:47:44,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:47:44,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:47:44,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:47:44,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:47:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:47:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:47:45,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:47:45,110 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 21:47:45,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:47:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:47:45,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:47:45,765 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 23 [2018-11-06 21:47:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:47:46,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:47:46,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 21:47:46,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:47:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:47:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:47:46,020 INFO L87 Difference]: Start difference. First operand 1019 states and 1572 transitions. Second operand 7 states. [2018-11-06 21:49:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:27,986 INFO L93 Difference]: Finished difference Result 7804 states and 12807 transitions. [2018-11-06 21:49:27,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 21:49:27,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2018-11-06 21:49:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:28,019 INFO L225 Difference]: With dead ends: 7804 [2018-11-06 21:49:28,020 INFO L226 Difference]: Without dead ends: 6787 [2018-11-06 21:49:28,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:49:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6787 states. [2018-11-06 21:49:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6787 to 6738. [2018-11-06 21:49:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6738 states. [2018-11-06 21:49:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 8904 transitions. [2018-11-06 21:49:28,152 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 8904 transitions. Word has length 122 [2018-11-06 21:49:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:28,153 INFO L480 AbstractCegarLoop]: Abstraction has 6738 states and 8904 transitions. [2018-11-06 21:49:28,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:49:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 8904 transitions. [2018-11-06 21:49:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-06 21:49:28,162 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:28,163 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, 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] [2018-11-06 21:49:28,163 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:28,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash -529473312, now seen corresponding path program 1 times [2018-11-06 21:49:28,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:28,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:28,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:28,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:28,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:28,522 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 21:49:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:49:28,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:28,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:49:28,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:49:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:49:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:28,567 INFO L87 Difference]: Start difference. First operand 6738 states and 8904 transitions. Second operand 4 states. [2018-11-06 21:49:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:33,063 INFO L93 Difference]: Finished difference Result 22809 states and 30792 transitions. [2018-11-06 21:49:33,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:49:33,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-11-06 21:49:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:33,118 INFO L225 Difference]: With dead ends: 22809 [2018-11-06 21:49:33,119 INFO L226 Difference]: Without dead ends: 12571 [2018-11-06 21:49:33,133 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12571 states. [2018-11-06 21:49:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12571 to 12571. [2018-11-06 21:49:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12571 states. [2018-11-06 21:49:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12571 states to 12571 states and 14526 transitions. [2018-11-06 21:49:33,330 INFO L78 Accepts]: Start accepts. Automaton has 12571 states and 14526 transitions. Word has length 181 [2018-11-06 21:49:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:33,331 INFO L480 AbstractCegarLoop]: Abstraction has 12571 states and 14526 transitions. [2018-11-06 21:49:33,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:49:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12571 states and 14526 transitions. [2018-11-06 21:49:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-06 21:49:33,336 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:33,336 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:33,336 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:33,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:33,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1254853386, now seen corresponding path program 1 times [2018-11-06 21:49:33,337 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:33,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:33,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:33,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:33,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-06 21:49:33,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:33,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:49:33,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:49:33,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:49:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:33,673 INFO L87 Difference]: Start difference. First operand 12571 states and 14526 transitions. Second operand 4 states. [2018-11-06 21:49:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:37,769 INFO L93 Difference]: Finished difference Result 26407 states and 30449 transitions. [2018-11-06 21:49:37,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:49:37,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-11-06 21:49:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:37,828 INFO L225 Difference]: With dead ends: 26407 [2018-11-06 21:49:37,828 INFO L226 Difference]: Without dead ends: 14270 [2018-11-06 21:49:37,843 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:49:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14270 states. [2018-11-06 21:49:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14270 to 12565. [2018-11-06 21:49:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12565 states. [2018-11-06 21:49:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12565 states to 12565 states and 14362 transitions. [2018-11-06 21:49:38,034 INFO L78 Accepts]: Start accepts. Automaton has 12565 states and 14362 transitions. Word has length 241 [2018-11-06 21:49:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:38,035 INFO L480 AbstractCegarLoop]: Abstraction has 12565 states and 14362 transitions. [2018-11-06 21:49:38,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:49:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 12565 states and 14362 transitions. [2018-11-06 21:49:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-06 21:49:38,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:38,043 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:38,043 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:38,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:38,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1011257092, now seen corresponding path program 1 times [2018-11-06 21:49:38,043 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:38,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:38,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:38,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:38,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-11-06 21:49:38,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:38,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:49:38,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:49:38,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:49:38,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:49:38,355 INFO L87 Difference]: Start difference. First operand 12565 states and 14362 transitions. Second operand 3 states. [2018-11-06 21:49:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:41,255 INFO L93 Difference]: Finished difference Result 33213 states and 37736 transitions. [2018-11-06 21:49:41,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:49:41,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2018-11-06 21:49:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:41,290 INFO L225 Difference]: With dead ends: 33213 [2018-11-06 21:49:41,291 INFO L226 Difference]: Without dead ends: 18467 [2018-11-06 21:49:41,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:49:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18467 states. [2018-11-06 21:49:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18467 to 17178. [2018-11-06 21:49:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17178 states. [2018-11-06 21:49:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 19115 transitions. [2018-11-06 21:49:41,502 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 19115 transitions. Word has length 326 [2018-11-06 21:49:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:41,503 INFO L480 AbstractCegarLoop]: Abstraction has 17178 states and 19115 transitions. [2018-11-06 21:49:41,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:49:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 19115 transitions. [2018-11-06 21:49:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-06 21:49:41,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:41,513 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, 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, 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] [2018-11-06 21:49:41,514 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:41,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2044779134, now seen corresponding path program 1 times [2018-11-06 21:49:41,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:41,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:41,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:41,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:41,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 284 proven. 83 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-11-06 21:49:42,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:49:42,402 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 21:49:42,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:42,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:49:42,790 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2018-11-06 21:49:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-06 21:49:43,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:49:43,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 21:49:43,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:49:43,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:49:43,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:49:43,073 INFO L87 Difference]: Start difference. First operand 17178 states and 19115 transitions. Second operand 6 states. [2018-11-06 21:50:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:29,721 INFO L93 Difference]: Finished difference Result 57405 states and 64165 transitions. [2018-11-06 21:50:29,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 21:50:29,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 395 [2018-11-06 21:50:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:29,777 INFO L225 Difference]: With dead ends: 57405 [2018-11-06 21:50:29,777 INFO L226 Difference]: Without dead ends: 40655 [2018-11-06 21:50:29,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:50:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40655 states. [2018-11-06 21:50:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40655 to 39783. [2018-11-06 21:50:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39783 states. [2018-11-06 21:50:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39783 states to 39783 states and 42945 transitions. [2018-11-06 21:50:30,239 INFO L78 Accepts]: Start accepts. Automaton has 39783 states and 42945 transitions. Word has length 395 [2018-11-06 21:50:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:30,239 INFO L480 AbstractCegarLoop]: Abstraction has 39783 states and 42945 transitions. [2018-11-06 21:50:30,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:50:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 39783 states and 42945 transitions. [2018-11-06 21:50:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-11-06 21:50:30,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:30,292 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:30,292 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:30,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1202324387, now seen corresponding path program 1 times [2018-11-06 21:50:30,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:30,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:30,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:30,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:30,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-06 21:50:31,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:31,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:50:31,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:50:31,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:50:31,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:31,191 INFO L87 Difference]: Start difference. First operand 39783 states and 42945 transitions. Second operand 3 states. [2018-11-06 21:50:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:34,167 INFO L93 Difference]: Finished difference Result 86824 states and 94061 transitions. [2018-11-06 21:50:34,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:50:34,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 647 [2018-11-06 21:50:34,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:34,251 INFO L225 Difference]: With dead ends: 86824 [2018-11-06 21:50:34,251 INFO L226 Difference]: Without dead ends: 47469 [2018-11-06 21:50:34,281 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47469 states. [2018-11-06 21:50:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47469 to 47025. [2018-11-06 21:50:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47025 states. [2018-11-06 21:50:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47025 states to 47025 states and 51013 transitions. [2018-11-06 21:50:34,765 INFO L78 Accepts]: Start accepts. Automaton has 47025 states and 51013 transitions. Word has length 647 [2018-11-06 21:50:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:34,765 INFO L480 AbstractCegarLoop]: Abstraction has 47025 states and 51013 transitions. [2018-11-06 21:50:34,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:50:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 47025 states and 51013 transitions. [2018-11-06 21:50:34,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2018-11-06 21:50:34,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:34,821 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:34,822 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:34,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:34,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1916051692, now seen corresponding path program 1 times [2018-11-06 21:50:34,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:34,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:34,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:34,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:34,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 540 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-11-06 21:50:35,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:35,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:50:35,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:50:35,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:50:35,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:35,999 INFO L87 Difference]: Start difference. First operand 47025 states and 51013 transitions. Second operand 3 states. [2018-11-06 21:50:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:38,708 INFO L93 Difference]: Finished difference Result 101711 states and 110878 transitions. [2018-11-06 21:50:38,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:50:38,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 737 [2018-11-06 21:50:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:38,776 INFO L225 Difference]: With dead ends: 101711 [2018-11-06 21:50:38,776 INFO L226 Difference]: Without dead ends: 54258 [2018-11-06 21:50:38,811 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54258 states. [2018-11-06 21:50:39,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54258 to 52980. [2018-11-06 21:50:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52980 states. [2018-11-06 21:50:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52980 states to 52980 states and 57748 transitions. [2018-11-06 21:50:39,412 INFO L78 Accepts]: Start accepts. Automaton has 52980 states and 57748 transitions. Word has length 737 [2018-11-06 21:50:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:39,413 INFO L480 AbstractCegarLoop]: Abstraction has 52980 states and 57748 transitions. [2018-11-06 21:50:39,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:50:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 52980 states and 57748 transitions. [2018-11-06 21:50:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2018-11-06 21:50:39,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:39,459 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:39,459 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:39,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash -880000352, now seen corresponding path program 1 times [2018-11-06 21:50:39,460 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:39,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:39,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:39,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:39,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-11-06 21:50:40,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:40,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:50:40,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:50:40,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:50:40,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:40,950 INFO L87 Difference]: Start difference. First operand 52980 states and 57748 transitions. Second operand 4 states. [2018-11-06 21:50:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:44,692 INFO L93 Difference]: Finished difference Result 129844 states and 141083 transitions. [2018-11-06 21:50:44,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:50:44,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 786 [2018-11-06 21:50:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:44,769 INFO L225 Difference]: With dead ends: 129844 [2018-11-06 21:50:44,769 INFO L226 Difference]: Without dead ends: 77293 [2018-11-06 21:50:44,805 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:50:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77293 states. [2018-11-06 21:50:45,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77293 to 58092. [2018-11-06 21:50:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58092 states. [2018-11-06 21:50:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58092 states to 58092 states and 63058 transitions. [2018-11-06 21:50:45,411 INFO L78 Accepts]: Start accepts. Automaton has 58092 states and 63058 transitions. Word has length 786 [2018-11-06 21:50:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:45,413 INFO L480 AbstractCegarLoop]: Abstraction has 58092 states and 63058 transitions. [2018-11-06 21:50:45,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:50:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 58092 states and 63058 transitions. [2018-11-06 21:50:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-11-06 21:50:45,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:45,448 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:45,448 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:45,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash -13705451, now seen corresponding path program 1 times [2018-11-06 21:50:45,449 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:45,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:45,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:45,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:45,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 439 proven. 461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:50:46,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:50:46,953 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 21:50:46,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:47,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:50:47,534 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-11-06 21:50:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 475 proven. 83 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-11-06 21:50:48,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:50:48,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 7 [2018-11-06 21:50:48,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:50:48,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:50:48,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:50:48,494 INFO L87 Difference]: Start difference. First operand 58092 states and 63058 transitions. Second operand 8 states. [2018-11-06 21:51:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:01,653 INFO L93 Difference]: Finished difference Result 152040 states and 164668 transitions. [2018-11-06 21:51:01,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 21:51:01,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 802 [2018-11-06 21:51:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:01,743 INFO L225 Difference]: With dead ends: 152040 [2018-11-06 21:51:01,743 INFO L226 Difference]: Without dead ends: 94377 [2018-11-06 21:51:01,772 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 800 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:51:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94377 states. [2018-11-06 21:51:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94377 to 89232. [2018-11-06 21:51:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89232 states. [2018-11-06 21:51:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89232 states to 89232 states and 96272 transitions. [2018-11-06 21:51:02,494 INFO L78 Accepts]: Start accepts. Automaton has 89232 states and 96272 transitions. Word has length 802 [2018-11-06 21:51:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:02,495 INFO L480 AbstractCegarLoop]: Abstraction has 89232 states and 96272 transitions. [2018-11-06 21:51:02,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:51:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 89232 states and 96272 transitions. [2018-11-06 21:51:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2018-11-06 21:51:02,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:02,540 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:51:02,540 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:02,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:02,541 INFO L82 PathProgramCache]: Analyzing trace with hash 748554579, now seen corresponding path program 1 times [2018-11-06 21:51:02,541 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:02,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:02,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:02,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:02,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:03,159 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-06 21:51:03,552 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-11-06 21:51:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 720 proven. 83 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2018-11-06 21:51:04,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:51:04,481 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 21:51:04,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:04,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:51:05,024 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2018-11-06 21:51:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-11-06 21:51:08,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:51:08,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:51:08,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:51:08,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:51:08,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:51:08,167 INFO L87 Difference]: Start difference. First operand 89232 states and 96272 transitions. Second operand 7 states. [2018-11-06 21:51:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:17,473 INFO L93 Difference]: Finished difference Result 198097 states and 213086 transitions. [2018-11-06 21:51:17,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:51:17,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 925 [2018-11-06 21:51:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:17,585 INFO L225 Difference]: With dead ends: 198097 [2018-11-06 21:51:17,585 INFO L226 Difference]: Without dead ends: 108867 [2018-11-06 21:51:17,632 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:51:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108867 states. [2018-11-06 21:51:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108867 to 101607. [2018-11-06 21:51:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101607 states. [2018-11-06 21:51:18,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101607 states to 101607 states and 108787 transitions. [2018-11-06 21:51:18,932 INFO L78 Accepts]: Start accepts. Automaton has 101607 states and 108787 transitions. Word has length 925 [2018-11-06 21:51:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:18,932 INFO L480 AbstractCegarLoop]: Abstraction has 101607 states and 108787 transitions. [2018-11-06 21:51:18,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:51:18,932 INFO L276 IsEmpty]: Start isEmpty. Operand 101607 states and 108787 transitions. [2018-11-06 21:51:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2018-11-06 21:51:18,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:18,978 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:51:18,978 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:18,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash -722372670, now seen corresponding path program 1 times [2018-11-06 21:51:18,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:18,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:18,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:18,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:18,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 864 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2018-11-06 21:51:20,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:51:20,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 21:51:20,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:51:20,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:51:20,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:51:20,457 INFO L87 Difference]: Start difference. First operand 101607 states and 108787 transitions. Second operand 3 states. Received shutdown request... [2018-11-06 21:51:22,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:51:22,760 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:51:22,766 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:51:22,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:51:22 BoogieIcfgContainer [2018-11-06 21:51:22,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:51:22,767 INFO L168 Benchmark]: Toolchain (without parser) took 238769.99 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 575.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:22,768 INFO L168 Benchmark]: CDTParser took 0.26 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 21:51:22,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1580.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:22,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 573.60 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 807.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:22,770 INFO L168 Benchmark]: Boogie Preprocessor took 329.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:22,771 INFO L168 Benchmark]: RCFGBuilder took 8444.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.1 MB). Peak memory consumption was 470.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:22,771 INFO L168 Benchmark]: TraceAbstraction took 227836.65 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:22,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1580.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 573.60 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 807.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 329.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8444.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.1 MB). Peak memory consumption was 470.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227836.65 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 158). Cancelled while BasicCegarLoop was constructing difference of abstraction (101607states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (178547 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 227.7s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 204.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4617 SDtfs, 16646 SDslu, 2218 SDs, 0 SdLazy, 46974 SolverSat, 6256 SolverUnsat, 86 SolverUnknown, 0 SolverNotchecked, 186.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2301 GetRequests, 2254 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101607occurred in iteration=11, 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: 4.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 37704 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 8457 NumberOfCodeBlocks, 8457 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8441 ConstructedInterpolants, 449 QuantifiedInterpolants, 27006978 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2746 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 9607/10365 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown