java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:32:52,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:32:52,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:32:52,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 19:32:52,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 19:32:52,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 19:32:52,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 19:32:52,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 19:32:52,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 19:32:52,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 19:32:52,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 19:32:52,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 19:32:52,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:32:52,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:32:52,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:32:52,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:32:52,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:32:52,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:32:52,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:32:52,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:32:52,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:32:52,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:32:52,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:32:52,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:32:52,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:32:52,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:32:52,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:32:52,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:32:52,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 19:32:52,998 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:32:52,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:32:53,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:32:53,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:32:53,000 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:32:53,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:32:53,001 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:32:53,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:32:53,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:32:53,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:32:53,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:32:53,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:32:53,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:32:53,002 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:32:53,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:32:53,002 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:32:53,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:32:53,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:32:53,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:32:53,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:32:53,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:32:53,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:32:53,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:32:53,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:32:53,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:32:53,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:32:53,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:32:53,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:32:53,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:32:53,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:32:53,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:32:53,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:32:53,053 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:32:53,054 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:32:53,054 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2019-09-07 19:32:53,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8b913ec/c363109752674eb7a18e21183e4930dc/FLAGac37775f3 [2019-09-07 19:32:53,916 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:32:53,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2019-09-07 19:32:53,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8b913ec/c363109752674eb7a18e21183e4930dc/FLAGac37775f3 [2019-09-07 19:32:54,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8b913ec/c363109752674eb7a18e21183e4930dc [2019-09-07 19:32:54,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:32:54,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:32:54,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:32:54,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:32:54,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:32:54,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:32:54" (1/1) ... [2019-09-07 19:32:54,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb25d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:54, skipping insertion in model container [2019-09-07 19:32:54,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:32:54" (1/1) ... [2019-09-07 19:32:54,476 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:32:54,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:32:56,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:32:56,245 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:32:56,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:32:57,021 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:32:57,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57 WrapperNode [2019-09-07 19:32:57,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:32:57,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:32:57,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:32:57,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:32:57,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... [2019-09-07 19:32:57,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:32:57,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:32:57,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:32:57,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:32:57,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:32:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:32:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:32:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:32:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:32:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:32:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:32:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:32:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:32:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:32:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:32:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:32:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:32:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:32:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:32:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:32:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:32:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:33:03,941 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:33:03,942 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:33:03,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:33:03 BoogieIcfgContainer [2019-09-07 19:33:03,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:33:03,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:33:03,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:33:03,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:33:03,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:32:54" (1/3) ... [2019-09-07 19:33:03,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de9e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:33:03, skipping insertion in model container [2019-09-07 19:33:03,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:32:57" (2/3) ... [2019-09-07 19:33:03,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de9e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:33:03, skipping insertion in model container [2019-09-07 19:33:03,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:33:03" (3/3) ... [2019-09-07 19:33:03,966 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label22.c [2019-09-07 19:33:03,982 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:33:03,995 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:33:04,020 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:33:04,083 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:33:04,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:33:04,085 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:33:04,085 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:33:04,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:33:04,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:33:04,086 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:33:04,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:33:04,087 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:33:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:33:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-07 19:33:04,157 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:04,158 INFO L399 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] [2019-09-07 19:33:04,161 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:04,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:04,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1172646233, now seen corresponding path program 1 times [2019-09-07 19:33:04,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:04,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:04,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:04,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:04,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:04,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:04,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:33:04,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:33:04,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:33:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:33:04,611 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:33:15,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:33:15,751 INFO L93 Difference]: Finished difference Result 4101 states and 7665 transitions. [2019-09-07 19:33:15,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:33:15,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-09-07 19:33:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:33:15,799 INFO L225 Difference]: With dead ends: 4101 [2019-09-07 19:33:15,799 INFO L226 Difference]: Without dead ends: 2901 [2019-09-07 19:33:15,811 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:33:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2019-09-07 19:33:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2771. [2019-09-07 19:33:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2771 states. [2019-09-07 19:33:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4860 transitions. [2019-09-07 19:33:16,000 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4860 transitions. Word has length 38 [2019-09-07 19:33:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:33:16,001 INFO L475 AbstractCegarLoop]: Abstraction has 2771 states and 4860 transitions. [2019-09-07 19:33:16,001 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:33:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4860 transitions. [2019-09-07 19:33:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-07 19:33:16,008 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:16,008 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:16,008 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:16,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1682449250, now seen corresponding path program 1 times [2019-09-07 19:33:16,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:16,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:16,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:16,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:16,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:16,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:16,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:33:16,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:33:16,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:33:16,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:33:16,293 INFO L87 Difference]: Start difference. First operand 2771 states and 4860 transitions. Second operand 6 states. [2019-09-07 19:33:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:33:25,552 INFO L93 Difference]: Finished difference Result 8111 states and 14509 transitions. [2019-09-07 19:33:25,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:33:25,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-07 19:33:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:33:25,585 INFO L225 Difference]: With dead ends: 8111 [2019-09-07 19:33:25,586 INFO L226 Difference]: Without dead ends: 5346 [2019-09-07 19:33:25,595 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:33:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2019-09-07 19:33:25,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 5286. [2019-09-07 19:33:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5286 states. [2019-09-07 19:33:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 9118 transitions. [2019-09-07 19:33:25,769 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 9118 transitions. Word has length 108 [2019-09-07 19:33:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:33:25,771 INFO L475 AbstractCegarLoop]: Abstraction has 5286 states and 9118 transitions. [2019-09-07 19:33:25,771 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:33:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 9118 transitions. [2019-09-07 19:33:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-07 19:33:25,781 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:25,781 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:25,782 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1718374215, now seen corresponding path program 1 times [2019-09-07 19:33:25,783 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:25,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:25,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:25,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:25,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:25,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:33:25,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:33:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:33:25,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:33:25,994 INFO L87 Difference]: Start difference. First operand 5286 states and 9118 transitions. Second operand 6 states. [2019-09-07 19:33:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:33:33,751 INFO L93 Difference]: Finished difference Result 13199 states and 23040 transitions. [2019-09-07 19:33:33,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:33:33,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-09-07 19:33:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:33:33,792 INFO L225 Difference]: With dead ends: 13199 [2019-09-07 19:33:33,793 INFO L226 Difference]: Without dead ends: 7919 [2019-09-07 19:33:33,809 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:33:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7919 states. [2019-09-07 19:33:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7919 to 7853. [2019-09-07 19:33:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7853 states. [2019-09-07 19:33:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 12900 transitions. [2019-09-07 19:33:34,012 INFO L78 Accepts]: Start accepts. Automaton has 7853 states and 12900 transitions. Word has length 111 [2019-09-07 19:33:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:33:34,013 INFO L475 AbstractCegarLoop]: Abstraction has 7853 states and 12900 transitions. [2019-09-07 19:33:34,013 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:33:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7853 states and 12900 transitions. [2019-09-07 19:33:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-07 19:33:34,015 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:34,015 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:34,015 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2086154765, now seen corresponding path program 1 times [2019-09-07 19:33:34,016 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:34,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:34,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:34,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:34,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:34,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:34,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:33:34,117 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:33:34,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:33:34,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:33:34,118 INFO L87 Difference]: Start difference. First operand 7853 states and 12900 transitions. Second operand 5 states. [2019-09-07 19:33:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:33:42,053 INFO L93 Difference]: Finished difference Result 23885 states and 42022 transitions. [2019-09-07 19:33:42,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:33:42,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-09-07 19:33:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:33:42,141 INFO L225 Difference]: With dead ends: 23885 [2019-09-07 19:33:42,142 INFO L226 Difference]: Without dead ends: 16038 [2019-09-07 19:33:42,173 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:33:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16038 states. [2019-09-07 19:33:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16038 to 15790. [2019-09-07 19:33:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15790 states. [2019-09-07 19:33:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15790 states to 15790 states and 24782 transitions. [2019-09-07 19:33:42,607 INFO L78 Accepts]: Start accepts. Automaton has 15790 states and 24782 transitions. Word has length 121 [2019-09-07 19:33:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:33:42,609 INFO L475 AbstractCegarLoop]: Abstraction has 15790 states and 24782 transitions. [2019-09-07 19:33:42,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:33:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 15790 states and 24782 transitions. [2019-09-07 19:33:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-07 19:33:42,611 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:42,611 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:42,611 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:42,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:42,612 INFO L82 PathProgramCache]: Analyzing trace with hash 383476845, now seen corresponding path program 1 times [2019-09-07 19:33:42,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:42,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:42,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:42,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:42,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:42,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:33:42,811 INFO L223 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 [2019-09-07 19:33:42,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:43,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:33:43,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:33:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 19:33:43,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:33:43,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2019-09-07 19:33:43,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:33:43,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:33:43,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:33:43,193 INFO L87 Difference]: Start difference. First operand 15790 states and 24782 transitions. Second operand 9 states. [2019-09-07 19:34:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:05,720 INFO L93 Difference]: Finished difference Result 65927 states and 126099 transitions. [2019-09-07 19:34:05,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-07 19:34:05,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 138 [2019-09-07 19:34:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:06,106 INFO L225 Difference]: With dead ends: 65927 [2019-09-07 19:34:06,106 INFO L226 Difference]: Without dead ends: 50143 [2019-09-07 19:34:06,205 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=1097, Unknown=0, NotChecked=0, Total=1406 [2019-09-07 19:34:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50143 states. [2019-09-07 19:34:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50143 to 49765. [2019-09-07 19:34:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49765 states. [2019-09-07 19:34:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49765 states to 49765 states and 75853 transitions. [2019-09-07 19:34:09,102 INFO L78 Accepts]: Start accepts. Automaton has 49765 states and 75853 transitions. Word has length 138 [2019-09-07 19:34:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:09,103 INFO L475 AbstractCegarLoop]: Abstraction has 49765 states and 75853 transitions. [2019-09-07 19:34:09,103 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:34:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 49765 states and 75853 transitions. [2019-09-07 19:34:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-09-07 19:34:09,115 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:09,115 INFO L399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:34:09,116 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash -495800733, now seen corresponding path program 1 times [2019-09-07 19:34:09,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:09,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:09,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:09,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:09,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:34:09,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:34:09,315 INFO L223 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) [2019-09-07 19:34:09,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:34:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:09,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:34:09,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:34:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-07 19:34:09,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:34:09,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 19:34:09,513 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:34:09,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:34:09,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:34:09,514 INFO L87 Difference]: Start difference. First operand 49765 states and 75853 transitions. Second operand 6 states. [2019-09-07 19:34:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:28,603 INFO L93 Difference]: Finished difference Result 198996 states and 354581 transitions. [2019-09-07 19:34:28,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:34:28,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2019-09-07 19:34:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:29,651 INFO L225 Difference]: With dead ends: 198996 [2019-09-07 19:34:29,652 INFO L226 Difference]: Without dead ends: 149237 [2019-09-07 19:34:29,843 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:34:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149237 states. [2019-09-07 19:34:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149237 to 147718. [2019-09-07 19:34:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147718 states. [2019-09-07 19:34:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147718 states to 147718 states and 215711 transitions. [2019-09-07 19:34:36,397 INFO L78 Accepts]: Start accepts. Automaton has 147718 states and 215711 transitions. Word has length 241 [2019-09-07 19:34:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:36,397 INFO L475 AbstractCegarLoop]: Abstraction has 147718 states and 215711 transitions. [2019-09-07 19:34:36,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:34:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 147718 states and 215711 transitions. [2019-09-07 19:34:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2019-09-07 19:34:36,411 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:36,411 INFO L399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:34:36,411 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:36,412 INFO L82 PathProgramCache]: Analyzing trace with hash -363803281, now seen corresponding path program 1 times [2019-09-07 19:34:36,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:36,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:36,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:36,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:36,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:34:36,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:34:36,616 INFO L223 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 [2019-09-07 19:34:36,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:36,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:34:36,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:34:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:34:39,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:34:39,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:34:39,311 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:34:39,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:34:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:34:39,313 INFO L87 Difference]: Start difference. First operand 147718 states and 215711 transitions. Second operand 9 states. [2019-09-07 19:35:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:35:04,894 INFO L93 Difference]: Finished difference Result 440983 states and 686160 transitions. [2019-09-07 19:35:04,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-07 19:35:04,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 264 [2019-09-07 19:35:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:35:06,726 INFO L225 Difference]: With dead ends: 440983 [2019-09-07 19:35:06,726 INFO L226 Difference]: Without dead ends: 278389 [2019-09-07 19:35:07,024 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 19:35:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278389 states. [2019-09-07 19:35:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278389 to 233720. [2019-09-07 19:35:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233720 states. [2019-09-07 19:35:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233720 states to 233720 states and 290655 transitions. [2019-09-07 19:35:17,172 INFO L78 Accepts]: Start accepts. Automaton has 233720 states and 290655 transitions. Word has length 264 [2019-09-07 19:35:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:35:17,173 INFO L475 AbstractCegarLoop]: Abstraction has 233720 states and 290655 transitions. [2019-09-07 19:35:17,173 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:35:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 233720 states and 290655 transitions. [2019-09-07 19:35:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-09-07 19:35:17,197 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:35:17,198 INFO L399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:35:17,198 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:35:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:35:17,199 INFO L82 PathProgramCache]: Analyzing trace with hash 230985454, now seen corresponding path program 1 times [2019-09-07 19:35:17,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:35:17,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:35:17,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:35:17,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:35:17,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:35:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:35:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:35:17,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:35:17,466 INFO L223 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) [2019-09-07 19:35:17,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:35:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:35:17,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:35:17,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:35:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:35:17,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:35:17,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2019-09-07 19:35:17,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:35:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:35:17,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:35:17,751 INFO L87 Difference]: Start difference. First operand 233720 states and 290655 transitions. Second operand 8 states. [2019-09-07 19:35:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:35:35,760 INFO L93 Difference]: Finished difference Result 486742 states and 613563 transitions. [2019-09-07 19:35:35,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 19:35:35,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 383 [2019-09-07 19:35:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:35:36,516 INFO L225 Difference]: With dead ends: 486742 [2019-09-07 19:35:36,516 INFO L226 Difference]: Without dead ends: 272446 [2019-09-07 19:35:36,753 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:35:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272446 states. [2019-09-07 19:35:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272446 to 268396. [2019-09-07 19:35:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268396 states. [2019-09-07 19:35:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268396 states to 268396 states and 326203 transitions. [2019-09-07 19:35:40,791 INFO L78 Accepts]: Start accepts. Automaton has 268396 states and 326203 transitions. Word has length 383 [2019-09-07 19:35:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:35:40,792 INFO L475 AbstractCegarLoop]: Abstraction has 268396 states and 326203 transitions. [2019-09-07 19:35:40,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:35:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 268396 states and 326203 transitions. [2019-09-07 19:35:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2019-09-07 19:35:40,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:35:40,808 INFO L399 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, 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, 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] [2019-09-07 19:35:40,808 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:35:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:35:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1342847478, now seen corresponding path program 1 times [2019-09-07 19:35:40,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:35:40,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:35:40,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:35:40,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:35:40,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:35:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:35:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 216 proven. 155 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2019-09-07 19:35:41,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:35:41,049 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:35:41,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:35:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:35:45,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:35:45,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:35:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 19:35:45,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:35:45,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:35:45,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:35:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:35:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:35:45,166 INFO L87 Difference]: Start difference. First operand 268396 states and 326203 transitions. Second operand 9 states. [2019-09-07 19:36:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:00,192 INFO L93 Difference]: Finished difference Result 552424 states and 691641 transitions. [2019-09-07 19:36:00,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 19:36:00,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 407 [2019-09-07 19:36:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:00,998 INFO L225 Difference]: With dead ends: 552424 [2019-09-07 19:36:00,998 INFO L226 Difference]: Without dead ends: 288801 [2019-09-07 19:36:01,228 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-09-07 19:36:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288801 states. [2019-09-07 19:36:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288801 to 281489. [2019-09-07 19:36:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281489 states. [2019-09-07 19:36:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281489 states to 281489 states and 338733 transitions. [2019-09-07 19:36:09,335 INFO L78 Accepts]: Start accepts. Automaton has 281489 states and 338733 transitions. Word has length 407 [2019-09-07 19:36:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:09,336 INFO L475 AbstractCegarLoop]: Abstraction has 281489 states and 338733 transitions. [2019-09-07 19:36:09,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:36:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 281489 states and 338733 transitions. [2019-09-07 19:36:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2019-09-07 19:36:09,427 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:09,428 INFO L399 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:36:09,428 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -304503277, now seen corresponding path program 1 times [2019-09-07 19:36:09,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:09,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:09,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:09,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:09,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 372 proven. 79 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2019-09-07 19:36:11,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:36:11,337 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:36:11,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:11,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:36:11,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:36:11,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:36:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-09-07 19:36:11,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:36:11,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:36:11,894 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:36:11,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:36:11,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:36:11,895 INFO L87 Difference]: Start difference. First operand 281489 states and 338733 transitions. Second operand 9 states. [2019-09-07 19:36:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:32,529 INFO L93 Difference]: Finished difference Result 591757 states and 713679 transitions. [2019-09-07 19:36:32,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 19:36:32,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 727 [2019-09-07 19:36:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:34,272 INFO L225 Difference]: With dead ends: 591757 [2019-09-07 19:36:34,273 INFO L226 Difference]: Without dead ends: 313587 [2019-09-07 19:36:34,534 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2019-09-07 19:36:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313587 states. [2019-09-07 19:36:39,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313587 to 310089. [2019-09-07 19:36:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310089 states. [2019-09-07 19:36:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310089 states to 310089 states and 371833 transitions. [2019-09-07 19:36:40,112 INFO L78 Accepts]: Start accepts. Automaton has 310089 states and 371833 transitions. Word has length 727 [2019-09-07 19:36:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:40,113 INFO L475 AbstractCegarLoop]: Abstraction has 310089 states and 371833 transitions. [2019-09-07 19:36:40,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:36:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 310089 states and 371833 transitions. [2019-09-07 19:36:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2019-09-07 19:36:40,254 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:40,255 INFO L399 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:36:40,255 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:40,256 INFO L82 PathProgramCache]: Analyzing trace with hash 810458267, now seen corresponding path program 1 times [2019-09-07 19:36:40,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:40,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:40,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:40,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:40,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 709 proven. 2 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2019-09-07 19:36:45,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:36:45,899 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:36:45,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:36:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:46,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 19:36:46,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:36:46,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-09-07 19:36:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 111 proven. 90 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2019-09-07 19:36:46,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:36:46,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 19:36:46,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 19:36:46,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 19:36:46,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:36:46,926 INFO L87 Difference]: Start difference. First operand 310089 states and 371833 transitions. Second operand 10 states. [2019-09-07 19:37:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:37:30,245 INFO L93 Difference]: Finished difference Result 750511 states and 900362 transitions. [2019-09-07 19:37:30,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 19:37:30,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 948 [2019-09-07 19:37:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:37:31,399 INFO L225 Difference]: With dead ends: 750511 [2019-09-07 19:37:31,399 INFO L226 Difference]: Without dead ends: 443657 [2019-09-07 19:37:31,753 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 967 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2019-09-07 19:37:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443657 states. [2019-09-07 19:37:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443657 to 429490. [2019-09-07 19:37:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429490 states. [2019-09-07 19:37:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429490 states to 429490 states and 504173 transitions. [2019-09-07 19:37:41,348 INFO L78 Accepts]: Start accepts. Automaton has 429490 states and 504173 transitions. Word has length 948 [2019-09-07 19:37:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:37:41,350 INFO L475 AbstractCegarLoop]: Abstraction has 429490 states and 504173 transitions. [2019-09-07 19:37:41,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 19:37:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 429490 states and 504173 transitions. [2019-09-07 19:37:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2019-09-07 19:37:41,493 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:37:41,494 INFO L399 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, 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, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:37:41,495 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:37:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:37:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1220521728, now seen corresponding path program 1 times [2019-09-07 19:37:41,495 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:37:41,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:37:41,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:41,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:41,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 1013 proven. 470 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-09-07 19:37:49,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:37:49,322 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:37:49,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:49,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:37:49,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:37:49,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:37:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 865 proven. 2 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2019-09-07 19:37:50,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:37:50,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:37:50,671 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:37:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:37:50,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:37:50,672 INFO L87 Difference]: Start difference. First operand 429490 states and 504173 transitions. Second operand 16 states. [2019-09-07 19:38:14,879 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-09-07 19:38:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:38:51,942 INFO L93 Difference]: Finished difference Result 959531 states and 1200691 transitions. [2019-09-07 19:38:51,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2019-09-07 19:38:51,943 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1032 [2019-09-07 19:38:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:38:54,363 INFO L225 Difference]: With dead ends: 959531 [2019-09-07 19:38:54,363 INFO L226 Difference]: Without dead ends: 527251 [2019-09-07 19:38:54,804 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1353 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12279 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3153, Invalid=26603, Unknown=0, NotChecked=0, Total=29756 [2019-09-07 19:38:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527251 states. [2019-09-07 19:39:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527251 to 506147. [2019-09-07 19:39:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506147 states. [2019-09-07 19:39:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506147 states to 506147 states and 568646 transitions. [2019-09-07 19:39:20,846 INFO L78 Accepts]: Start accepts. Automaton has 506147 states and 568646 transitions. Word has length 1032 [2019-09-07 19:39:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:20,847 INFO L475 AbstractCegarLoop]: Abstraction has 506147 states and 568646 transitions. [2019-09-07 19:39:20,847 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:39:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 506147 states and 568646 transitions. [2019-09-07 19:39:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1500 [2019-09-07 19:39:21,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:21,112 INFO L399 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:21,112 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:21,113 INFO L82 PathProgramCache]: Analyzing trace with hash 532525183, now seen corresponding path program 1 times [2019-09-07 19:39:21,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:21,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:21,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:21,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:21,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1880 backedges. 993 proven. 644 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2019-09-07 19:39:25,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:39:25,120 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:39:25,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:25,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:39:25,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:39:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1880 backedges. 1278 proven. 5 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2019-09-07 19:39:26,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:39:26,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13 [2019-09-07 19:39:26,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 19:39:26,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 19:39:26,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:39:26,526 INFO L87 Difference]: Start difference. First operand 506147 states and 568646 transitions. Second operand 13 states. [2019-09-07 19:39:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:52,422 INFO L93 Difference]: Finished difference Result 997609 states and 1122864 transitions. [2019-09-07 19:39:52,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-07 19:39:52,423 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1499 [2019-09-07 19:39:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:55,349 INFO L225 Difference]: With dead ends: 997609 [2019-09-07 19:39:55,350 INFO L226 Difference]: Without dead ends: 527136 [2019-09-07 19:39:55,825 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1601 GetRequests, 1546 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2019-09-07 19:39:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527136 states. [2019-09-07 19:40:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527136 to 520396. [2019-09-07 19:40:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520396 states. [2019-09-07 19:40:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520396 states to 520396 states and 577606 transitions. [2019-09-07 19:40:16,966 INFO L78 Accepts]: Start accepts. Automaton has 520396 states and 577606 transitions. Word has length 1499 [2019-09-07 19:40:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:16,967 INFO L475 AbstractCegarLoop]: Abstraction has 520396 states and 577606 transitions. [2019-09-07 19:40:16,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 19:40:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 520396 states and 577606 transitions. [2019-09-07 19:40:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1587 [2019-09-07 19:40:18,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:18,029 INFO L399 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, 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, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:40:18,029 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash 181061332, now seen corresponding path program 1 times [2019-09-07 19:40:18,030 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:18,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:18,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:18,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:18,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 1445 proven. 238 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2019-09-07 19:40:22,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:40:22,325 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:40:22,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:22,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-07 19:40:22,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:40:22,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:22,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:23,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:23,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 1526 proven. 31 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2019-09-07 19:40:25,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:40:25,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2019-09-07 19:40:25,055 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:40:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:40:25,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:40:25,055 INFO L87 Difference]: Start difference. First operand 520396 states and 577606 transitions. Second operand 16 states. [2019-09-07 19:40:50,449 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-07 19:41:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:41:56,408 INFO L93 Difference]: Finished difference Result 1130614 states and 1299723 transitions. [2019-09-07 19:41:56,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2019-09-07 19:41:56,408 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1586 [2019-09-07 19:41:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:41:59,119 INFO L225 Difference]: With dead ends: 1130614 [2019-09-07 19:41:59,120 INFO L226 Difference]: Without dead ends: 632760 [2019-09-07 19:41:59,521 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1829 GetRequests, 1692 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7764 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3023, Invalid=16159, Unknown=0, NotChecked=0, Total=19182 [2019-09-07 19:41:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632760 states. [2019-09-07 19:42:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632760 to 607082. [2019-09-07 19:42:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607082 states. [2019-09-07 19:42:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607082 states to 607082 states and 672493 transitions. [2019-09-07 19:42:23,637 INFO L78 Accepts]: Start accepts. Automaton has 607082 states and 672493 transitions. Word has length 1586 [2019-09-07 19:42:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:42:23,639 INFO L475 AbstractCegarLoop]: Abstraction has 607082 states and 672493 transitions. [2019-09-07 19:42:23,639 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:42:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 607082 states and 672493 transitions. [2019-09-07 19:42:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2019-09-07 19:42:23,981 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:42:23,982 INFO L399 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, 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, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:42:23,983 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:42:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:42:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1229729456, now seen corresponding path program 1 times [2019-09-07 19:42:23,984 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:42:23,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:42:23,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:23,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:23,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:26,688 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 10 [2019-09-07 19:42:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2118 backedges. 1394 proven. 244 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-09-07 19:42:36,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:42:36,967 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:42:36,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:37,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:42:37,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:42:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2118 backedges. 1341 proven. 6 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2019-09-07 19:42:38,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:42:38,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 23 [2019-09-07 19:42:38,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 19:42:38,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 19:42:38,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:42:38,844 INFO L87 Difference]: Start difference. First operand 607082 states and 672493 transitions. Second operand 23 states. [2019-09-07 19:44:06,869 WARN L188 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 24