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_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:43:10,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:43:10,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:43:10,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:43:10,813 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:43:10,815 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:43:10,816 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:43:10,818 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:43:10,820 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:43:10,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:43:10,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:43:10,822 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:43:10,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:43:10,824 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:43:10,825 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:43:10,826 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:43:10,827 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:43:10,828 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:43:10,830 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:43:10,832 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:43:10,833 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:43:10,834 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:43:10,836 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 19:43:10,845 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 19:43:10,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:43:10,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:43:10,874 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:43:10,875 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:43:10,875 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:43:10,875 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:43:10,879 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:43:10,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:43:10,879 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:43:10,879 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:43:10,879 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:43:10,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:43:10,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:43:10,880 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:43:10,880 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:43:10,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:43:10,882 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:43:10,882 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:43:10,882 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:43:10,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:43:10,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:43:10,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:43:10,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:43:10,883 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:43:10,883 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:43:10,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:43:10,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:43:10,884 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:43:10,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:43:10,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:43:10,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:43:10,958 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:43:10,958 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:43:10,959 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c [2018-11-06 19:43:11,033 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32af07caa/91cc919e18f648dfaf7711c4249204d3/FLAG20667d849 [2018-11-06 19:43:12,041 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:43:12,042 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c [2018-11-06 19:43:12,099 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32af07caa/91cc919e18f648dfaf7711c4249204d3/FLAG20667d849 [2018-11-06 19:43:12,117 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32af07caa/91cc919e18f648dfaf7711c4249204d3 [2018-11-06 19:43:12,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:43:12,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:43:12,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:43:12,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:43:12,144 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:43:12,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:43:12" (1/1) ... [2018-11-06 19:43:12,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:12, skipping insertion in model container [2018-11-06 19:43:12,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:43:12" (1/1) ... [2018-11-06 19:43:12,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:43:12,443 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:43:14,408 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:43:14,413 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:43:15,454 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:43:15,514 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:43:15,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15 WrapperNode [2018-11-06 19:43:15,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:43:15,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:43:15,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:43:15,516 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:43:15,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:16,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:16,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:43:16,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:43:16,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:43:16,647 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:43:16,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:16,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:16,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:16,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:17,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:17,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:17,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (1/1) ... [2018-11-06 19:43:17,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:43:17,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:43:17,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:43:17,483 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:43:17,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (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 19:43:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:43:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:43:17,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:43:35,087 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:43:35,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:35 BoogieIcfgContainer [2018-11-06 19:43:35,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:43:35,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:43:35,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:43:35,092 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:43:35,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:43:12" (1/3) ... [2018-11-06 19:43:35,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a2ec45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:35, skipping insertion in model container [2018-11-06 19:43:35,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:15" (2/3) ... [2018-11-06 19:43:35,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a2ec45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:35, skipping insertion in model container [2018-11-06 19:43:35,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:35" (3/3) ... [2018-11-06 19:43:35,099 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label28_false-unreach-call.c [2018-11-06 19:43:35,108 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:43:35,120 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:43:35,138 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:43:35,202 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:43:35,203 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:43:35,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:43:35,203 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:43:35,203 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:43:35,203 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:43:35,203 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:43:35,203 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:43:35,203 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:43:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:43:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-06 19:43:35,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:43:35,263 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] [2018-11-06 19:43:35,266 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:43:35,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:43:35,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-11-06 19:43:35,275 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:43:35,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:43:35,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:35,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:43:35,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:43:35,593 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 19:43:35,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:43:35,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:43:35,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:43:35,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:43:35,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:43:35,621 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:43:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:43:55,832 INFO L93 Difference]: Finished difference Result 6326 states and 12083 transitions. [2018-11-06 19:43:55,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:43:55,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-06 19:43:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:43:55,891 INFO L225 Difference]: With dead ends: 6326 [2018-11-06 19:43:55,892 INFO L226 Difference]: Without dead ends: 4570 [2018-11-06 19:43:55,900 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 19:43:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-11-06 19:43:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4565. [2018-11-06 19:43:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2018-11-06 19:43:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 7758 transitions. [2018-11-06 19:43:56,126 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 7758 transitions. Word has length 24 [2018-11-06 19:43:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:43:56,127 INFO L480 AbstractCegarLoop]: Abstraction has 4565 states and 7758 transitions. [2018-11-06 19:43:56,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:43:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 7758 transitions. [2018-11-06 19:43:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-06 19:43:56,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:43:56,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:56,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:43:56,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:43:56,136 INFO L82 PathProgramCache]: Analyzing trace with hash 970556492, now seen corresponding path program 1 times [2018-11-06 19:43:56,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:43:56,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:43:56,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:56,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:43:56,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:43:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:43:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:43:56,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:43:56,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:43:56,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:43:56,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:43:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:43:56,474 INFO L87 Difference]: Start difference. First operand 4565 states and 7758 transitions. Second operand 4 states. [2018-11-06 19:44:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:44:20,416 INFO L93 Difference]: Finished difference Result 17445 states and 29978 transitions. [2018-11-06 19:44:20,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:44:20,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-11-06 19:44:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:44:20,478 INFO L225 Difference]: With dead ends: 17445 [2018-11-06 19:44:20,479 INFO L226 Difference]: Without dead ends: 12882 [2018-11-06 19:44:20,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:44:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12882 states. [2018-11-06 19:44:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12882 to 12843. [2018-11-06 19:44:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12843 states. [2018-11-06 19:44:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12843 states to 12843 states and 18655 transitions. [2018-11-06 19:44:20,748 INFO L78 Accepts]: Start accepts. Automaton has 12843 states and 18655 transitions. Word has length 110 [2018-11-06 19:44:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:44:20,748 INFO L480 AbstractCegarLoop]: Abstraction has 12843 states and 18655 transitions. [2018-11-06 19:44:20,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:44:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12843 states and 18655 transitions. [2018-11-06 19:44:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-06 19:44:20,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:20,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:44:20,766 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:20,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:20,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1024895327, now seen corresponding path program 1 times [2018-11-06 19:44:20,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:20,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:20,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:20,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:20,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:44:21,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:21,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:44:21,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:44:21,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:44:21,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:44:21,189 INFO L87 Difference]: Start difference. First operand 12843 states and 18655 transitions. Second operand 4 states. [2018-11-06 19:44:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:44:36,659 INFO L93 Difference]: Finished difference Result 50585 states and 73613 transitions. [2018-11-06 19:44:36,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:44:36,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-06 19:44:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:44:36,756 INFO L225 Difference]: With dead ends: 50585 [2018-11-06 19:44:36,756 INFO L226 Difference]: Without dead ends: 37744 [2018-11-06 19:44:36,772 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 19:44:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37744 states. [2018-11-06 19:44:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37744 to 37729. [2018-11-06 19:44:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37729 states. [2018-11-06 19:44:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37729 states to 37729 states and 48555 transitions. [2018-11-06 19:44:37,392 INFO L78 Accepts]: Start accepts. Automaton has 37729 states and 48555 transitions. Word has length 155 [2018-11-06 19:44:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:44:37,393 INFO L480 AbstractCegarLoop]: Abstraction has 37729 states and 48555 transitions. [2018-11-06 19:44:37,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:44:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 37729 states and 48555 transitions. [2018-11-06 19:44:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-06 19:44:37,397 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:37,397 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:44:37,400 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:37,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash -2025339405, now seen corresponding path program 1 times [2018-11-06 19:44:37,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:37,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:37,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:37,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:37,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:44:37,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:37,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:44:37,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:44:37,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:44:37,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:44:37,700 INFO L87 Difference]: Start difference. First operand 37729 states and 48555 transitions. Second operand 4 states. [2018-11-06 19:44:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:44:56,384 INFO L93 Difference]: Finished difference Result 148197 states and 190720 transitions. [2018-11-06 19:44:56,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:44:56,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2018-11-06 19:44:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:44:56,658 INFO L225 Difference]: With dead ends: 148197 [2018-11-06 19:44:56,659 INFO L226 Difference]: Without dead ends: 110470 [2018-11-06 19:44:56,712 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 19:44:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110470 states. [2018-11-06 19:44:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110470 to 73242. [2018-11-06 19:44:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73242 states. [2018-11-06 19:44:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73242 states to 73242 states and 91459 transitions. [2018-11-06 19:44:57,900 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 91459 transitions. Word has length 171 [2018-11-06 19:44:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:44:57,901 INFO L480 AbstractCegarLoop]: Abstraction has 73242 states and 91459 transitions. [2018-11-06 19:44:57,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:44:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 91459 transitions. [2018-11-06 19:44:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-06 19:44:57,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:57,909 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:44:57,909 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:57,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2033473440, now seen corresponding path program 1 times [2018-11-06 19:44:57,910 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:57,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:57,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:57,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:57,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:44:58,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:58,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:44:58,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:44:58,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:44:58,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:44:58,311 INFO L87 Difference]: Start difference. First operand 73242 states and 91459 transitions. Second operand 4 states. [2018-11-06 19:45:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:15,368 INFO L93 Difference]: Finished difference Result 171076 states and 211981 transitions. [2018-11-06 19:45:15,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:45:15,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-11-06 19:45:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:15,482 INFO L225 Difference]: With dead ends: 171076 [2018-11-06 19:45:15,482 INFO L226 Difference]: Without dead ends: 97836 [2018-11-06 19:45:15,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 19:45:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97836 states. [2018-11-06 19:45:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97836 to 97827. [2018-11-06 19:45:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97827 states. [2018-11-06 19:45:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97827 states to 97827 states and 115491 transitions. [2018-11-06 19:45:17,072 INFO L78 Accepts]: Start accepts. Automaton has 97827 states and 115491 transitions. Word has length 271 [2018-11-06 19:45:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:17,073 INFO L480 AbstractCegarLoop]: Abstraction has 97827 states and 115491 transitions. [2018-11-06 19:45:17,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:45:17,073 INFO L276 IsEmpty]: Start isEmpty. Operand 97827 states and 115491 transitions. [2018-11-06 19:45:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-11-06 19:45:17,091 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:17,092 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:17,093 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:17,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1909690267, now seen corresponding path program 1 times [2018-11-06 19:45:17,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:17,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:17,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:17,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:17,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:17,966 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-06 19:45:18,574 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-11-06 19:45:19,281 WARN L179 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-11-06 19:45:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:45:21,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:45:21,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-06 19:45:21,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:45:21,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:45:21,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:45:21,040 INFO L87 Difference]: Start difference. First operand 97827 states and 115491 transitions. Second operand 8 states. [2018-11-06 19:45:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:44,615 INFO L93 Difference]: Finished difference Result 270301 states and 319038 transitions. [2018-11-06 19:45:44,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 19:45:44,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 692 [2018-11-06 19:45:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:44,809 INFO L225 Difference]: With dead ends: 270301 [2018-11-06 19:45:44,809 INFO L226 Difference]: Without dead ends: 172476 [2018-11-06 19:45:44,873 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-11-06 19:45:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172476 states. [2018-11-06 19:45:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172476 to 99193. [2018-11-06 19:45:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99193 states. [2018-11-06 19:45:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99193 states to 99193 states and 116863 transitions. [2018-11-06 19:45:46,318 INFO L78 Accepts]: Start accepts. Automaton has 99193 states and 116863 transitions. Word has length 692 [2018-11-06 19:45:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:46,320 INFO L480 AbstractCegarLoop]: Abstraction has 99193 states and 116863 transitions. [2018-11-06 19:45:46,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:45:46,320 INFO L276 IsEmpty]: Start isEmpty. Operand 99193 states and 116863 transitions. [2018-11-06 19:45:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2018-11-06 19:45:46,358 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:46,360 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:45:46,360 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:46,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1566156931, now seen corresponding path program 1 times [2018-11-06 19:45:46,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:46,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:46,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:46,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:47,345 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-06 19:45:47,902 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-11-06 19:45:48,540 WARN L179 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-11-06 19:45:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 44 proven. 394 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-06 19:45:50,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:45:50,496 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 19:45:50,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:50,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:45:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-11-06 19:45:51,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:45:51,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-11-06 19:45:51,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:45:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:45:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:45:51,843 INFO L87 Difference]: Start difference. First operand 99193 states and 116863 transitions. Second operand 10 states. [2018-11-06 19:46:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:25,005 INFO L93 Difference]: Finished difference Result 390423 states and 460212 transitions. [2018-11-06 19:46:25,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 19:46:25,005 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 906 [2018-11-06 19:46:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:25,477 INFO L225 Difference]: With dead ends: 390423 [2018-11-06 19:46:25,477 INFO L226 Difference]: Without dead ends: 292598 [2018-11-06 19:46:25,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 917 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-11-06 19:46:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292598 states. [2018-11-06 19:46:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292598 to 242646. [2018-11-06 19:46:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242646 states. [2018-11-06 19:46:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242646 states to 242646 states and 276982 transitions. [2018-11-06 19:46:29,441 INFO L78 Accepts]: Start accepts. Automaton has 242646 states and 276982 transitions. Word has length 906 [2018-11-06 19:46:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:29,442 INFO L480 AbstractCegarLoop]: Abstraction has 242646 states and 276982 transitions. [2018-11-06 19:46:29,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:46:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 242646 states and 276982 transitions. [2018-11-06 19:46:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2018-11-06 19:46:29,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:29,470 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, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:29,470 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:29,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:29,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1395976009, now seen corresponding path program 1 times [2018-11-06 19:46:29,471 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:29,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:29,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:29,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:29,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:30,368 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 19:46:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 585 proven. 4 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2018-11-06 19:46:32,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:46:32,402 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 19:46:32,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:33,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:46:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-11-06 19:46:33,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:46:33,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:46:33,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:46:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:46:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:46:33,887 INFO L87 Difference]: Start difference. First operand 242646 states and 276982 transitions. Second operand 6 states. Received shutdown request... [2018-11-06 19:46:57,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:46:57,775 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:46:57,780 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:46:57,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:46:57 BoogieIcfgContainer [2018-11-06 19:46:57,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:46:57,781 INFO L168 Benchmark]: Toolchain (without parser) took 225648.56 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:46:57,782 INFO L168 Benchmark]: CDTParser took 0.24 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 19:46:57,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3378.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:57,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 1130.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.0 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:57,785 INFO L168 Benchmark]: Boogie Preprocessor took 834.92 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: 101.6 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:57,785 INFO L168 Benchmark]: RCFGBuilder took 17605.80 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 300.4 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -381.2 MB). Peak memory consumption was 814.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:46:57,786 INFO L168 Benchmark]: TraceAbstraction took 202691.43 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 10.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-06 19:46:57,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3378.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1130.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.0 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 834.92 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: 101.6 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17605.80 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 300.4 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -381.2 MB). Peak memory consumption was 814.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202691.43 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 10.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (242646states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (471126 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 177.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11939 SDtfs, 47860 SDslu, 11203 SDs, 0 SdLazy, 88381 SolverSat, 22380 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 143.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2093 GetRequests, 2035 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242646occurred in iteration=7, 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: 9.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 160531 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 5459 NumberOfCodeBlocks, 5459 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5449 ConstructedInterpolants, 0 QuantifiedInterpolants, 19762265 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2334 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 3123/3521 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown