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/Problem17_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:04:38,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:04:38,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:04:38,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 22:04:38,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 22:04:38,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 22:04:38,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 22:04:38,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 22:04:38,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 22:04:38,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 22:04:38,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 22:04:38,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 22:04:38,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:04:38,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:04:38,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:04:38,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:04:38,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:04:38,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:04:38,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:04:38,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:04:38,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:04:38,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:04:38,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:04:38,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:04:38,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 22:04:38,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:04:38,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:04:38,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:04:38,925 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 22:04:38,962 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:04:38,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:04:38,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:04:38,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:04:38,967 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:04:38,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:04:38,968 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:04:38,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:04:38,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:04:38,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:04:38,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:04:38,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:04:38,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:04:38,969 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:04:38,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:04:38,969 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:04:38,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:04:38,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:04:38,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:04:38,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:04:38,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:04:38,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:04:38,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:04:38,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:04:38,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:04:38,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:04:38,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:04:38,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:04:38,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:04:39,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:04:39,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:04:39,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:04:39,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:04:39,032 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:04:39,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2019-09-07 22:04:39,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3c7a656/2d851550e21d45339bd0e39bf60e4d69/FLAG09bc2c4e4 [2019-09-07 22:04:39,806 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:04:39,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2019-09-07 22:04:39,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3c7a656/2d851550e21d45339bd0e39bf60e4d69/FLAG09bc2c4e4 [2019-09-07 22:04:39,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3c7a656/2d851550e21d45339bd0e39bf60e4d69 [2019-09-07 22:04:39,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:04:39,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:04:39,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:04:39,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:04:39,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:04:39,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:04:39" (1/1) ... [2019-09-07 22:04:39,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262768b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:39, skipping insertion in model container [2019-09-07 22:04:39,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:04:39" (1/1) ... [2019-09-07 22:04:39,967 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:04:40,086 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:04:41,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:04:41,224 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:04:41,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:04:41,595 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:04:41,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41 WrapperNode [2019-09-07 22:04:41,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:04:41,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:04:41,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:04:41,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:04:41,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (1/1) ... [2019-09-07 22:04:41,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:04:41,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:04:41,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:04:41,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:04:41,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (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 22:04:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:04:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:04:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:04:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:04:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:04:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:04:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:04:45,532 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:04:45,532 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:04:45,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:04:45 BoogieIcfgContainer [2019-09-07 22:04:45,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:04:45,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:04:45,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:04:45,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:04:45,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:04:39" (1/3) ... [2019-09-07 22:04:45,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf8ea1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:04:45, skipping insertion in model container [2019-09-07 22:04:45,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:04:41" (2/3) ... [2019-09-07 22:04:45,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf8ea1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:04:45, skipping insertion in model container [2019-09-07 22:04:45,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:04:45" (3/3) ... [2019-09-07 22:04:45,544 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2019-09-07 22:04:45,555 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:04:45,563 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:04:45,583 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:04:45,633 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:04:45,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:04:45,634 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:04:45,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:04:45,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:04:45,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:04:45,634 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:04:45,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:04:45,635 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:04:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-07 22:04:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-07 22:04:45,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:04:45,685 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:04:45,687 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:04:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:04:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1915873023, now seen corresponding path program 1 times [2019-09-07 22:04:45,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:04:45,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:04:45,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:04:45,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:04:45,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:04:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:04:45,958 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 22:04:45,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:04:45,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:04:45,967 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:04:45,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:04:45,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:04:45,984 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-07 22:04:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:04:52,602 INFO L93 Difference]: Finished difference Result 2158 states and 4003 transitions. [2019-09-07 22:04:52,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:04:52,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-07 22:04:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:04:52,642 INFO L225 Difference]: With dead ends: 2158 [2019-09-07 22:04:52,643 INFO L226 Difference]: Without dead ends: 1474 [2019-09-07 22:04:52,652 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 22:04:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2019-09-07 22:04:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1447. [2019-09-07 22:04:52,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1447 states. [2019-09-07 22:04:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2481 transitions. [2019-09-07 22:04:52,804 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2481 transitions. Word has length 16 [2019-09-07 22:04:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:04:52,805 INFO L475 AbstractCegarLoop]: Abstraction has 1447 states and 2481 transitions. [2019-09-07 22:04:52,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:04:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2481 transitions. [2019-09-07 22:04:52,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-07 22:04:52,810 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:04:52,811 INFO L399 BasicCegarLoop]: trace histogram [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 22:04:52,811 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:04:52,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:04:52,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2142343664, now seen corresponding path program 1 times [2019-09-07 22:04:52,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:04:52,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:04:52,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:04:52,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:04:52,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:04:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:04:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:04:53,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:04:53,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:04:53,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:04:53,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:04:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:04:53,095 INFO L87 Difference]: Start difference. First operand 1447 states and 2481 transitions. Second operand 6 states. [2019-09-07 22:05:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:05:01,036 INFO L93 Difference]: Finished difference Result 5604 states and 9931 transitions. [2019-09-07 22:05:01,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:05:01,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-09-07 22:05:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:05:01,071 INFO L225 Difference]: With dead ends: 5604 [2019-09-07 22:05:01,071 INFO L226 Difference]: Without dead ends: 4163 [2019-09-07 22:05:01,078 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:05:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2019-09-07 22:05:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 4140. [2019-09-07 22:05:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4140 states. [2019-09-07 22:05:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 6054 transitions. [2019-09-07 22:05:01,228 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 6054 transitions. Word has length 94 [2019-09-07 22:05:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:05:01,229 INFO L475 AbstractCegarLoop]: Abstraction has 4140 states and 6054 transitions. [2019-09-07 22:05:01,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:05:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 6054 transitions. [2019-09-07 22:05:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-07 22:05:01,238 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:05:01,238 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 22:05:01,238 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:05:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:05:01,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1362243484, now seen corresponding path program 1 times [2019-09-07 22:05:01,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:05:01,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:05:01,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:01,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:01,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:05:01,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:05:01,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:05:01,437 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:05:01,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:05:01,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:05:01,438 INFO L87 Difference]: Start difference. First operand 4140 states and 6054 transitions. Second operand 6 states. [2019-09-07 22:05:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:05:05,821 INFO L93 Difference]: Finished difference Result 12482 states and 19729 transitions. [2019-09-07 22:05:05,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:05:05,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-09-07 22:05:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:05:05,873 INFO L225 Difference]: With dead ends: 12482 [2019-09-07 22:05:05,873 INFO L226 Difference]: Without dead ends: 8348 [2019-09-07 22:05:05,892 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 22:05:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2019-09-07 22:05:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8275. [2019-09-07 22:05:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8275 states. [2019-09-07 22:05:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 12053 transitions. [2019-09-07 22:05:06,140 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 12053 transitions. Word has length 95 [2019-09-07 22:05:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:05:06,141 INFO L475 AbstractCegarLoop]: Abstraction has 8275 states and 12053 transitions. [2019-09-07 22:05:06,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:05:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 12053 transitions. [2019-09-07 22:05:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-07 22:05:06,145 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:05:06,145 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:05:06,145 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:05:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:05:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1421521241, now seen corresponding path program 1 times [2019-09-07 22:05:06,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:05:06,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:05:06,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:06,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:06,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-09-07 22:05:06,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:05:06,376 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 22:05:06,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:06,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:05:06,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:05:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:05:06,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:05:06,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:05:06,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:05:06,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:05:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:05:06,612 INFO L87 Difference]: Start difference. First operand 8275 states and 12053 transitions. Second operand 9 states. [2019-09-07 22:05:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:05:12,724 INFO L93 Difference]: Finished difference Result 20630 states and 30028 transitions. [2019-09-07 22:05:12,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 22:05:12,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2019-09-07 22:05:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:05:12,801 INFO L225 Difference]: With dead ends: 20630 [2019-09-07 22:05:12,801 INFO L226 Difference]: Without dead ends: 11062 [2019-09-07 22:05:12,833 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-09-07 22:05:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11062 states. [2019-09-07 22:05:13,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 9266. [2019-09-07 22:05:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9266 states. [2019-09-07 22:05:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 11996 transitions. [2019-09-07 22:05:13,093 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 11996 transitions. Word has length 168 [2019-09-07 22:05:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:05:13,095 INFO L475 AbstractCegarLoop]: Abstraction has 9266 states and 11996 transitions. [2019-09-07 22:05:13,095 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:05:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 11996 transitions. [2019-09-07 22:05:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-07 22:05:13,098 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:05:13,098 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:05:13,098 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:05:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:05:13,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2090532795, now seen corresponding path program 1 times [2019-09-07 22:05:13,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:05:13,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:05:13,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:13,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:13,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 74 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 22:05:13,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:05:13,484 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 22:05:13,507 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 22:05:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:13,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:05:13,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:05:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-09-07 22:05:13,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:05:13,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 22:05:13,650 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:05:13,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:05:13,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:05:13,651 INFO L87 Difference]: Start difference. First operand 9266 states and 11996 transitions. Second operand 8 states. [2019-09-07 22:05:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:05:20,096 INFO L93 Difference]: Finished difference Result 18593 states and 24465 transitions. [2019-09-07 22:05:20,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:05:20,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2019-09-07 22:05:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:05:20,132 INFO L225 Difference]: With dead ends: 18593 [2019-09-07 22:05:20,133 INFO L226 Difference]: Without dead ends: 9333 [2019-09-07 22:05:20,163 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:05:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2019-09-07 22:05:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 9261. [2019-09-07 22:05:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9261 states. [2019-09-07 22:05:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9261 states to 9261 states and 11827 transitions. [2019-09-07 22:05:20,382 INFO L78 Accepts]: Start accepts. Automaton has 9261 states and 11827 transitions. Word has length 181 [2019-09-07 22:05:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:05:20,383 INFO L475 AbstractCegarLoop]: Abstraction has 9261 states and 11827 transitions. [2019-09-07 22:05:20,383 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:05:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9261 states and 11827 transitions. [2019-09-07 22:05:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-09-07 22:05:20,388 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:05:20,388 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:20,389 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:05:20,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:05:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1348856608, now seen corresponding path program 1 times [2019-09-07 22:05:20,389 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:05:20,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:05:20,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:20,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:20,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 22:05:20,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:05:20,674 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) [2019-09-07 22:05:20,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:05:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:20,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 22:05:20,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:05:20,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:05:20,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:05:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Stream closed [2019-09-07 22:05:21,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:05:21,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-09-07 22:05:21,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:05:21,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:05:21,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:05:21,084 INFO L87 Difference]: Start difference. First operand 9261 states and 11827 transitions. Second operand 9 states. [2019-09-07 22:05:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:05:31,870 INFO L93 Difference]: Finished difference Result 33357 states and 47904 transitions. [2019-09-07 22:05:31,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 22:05:31,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 244 [2019-09-07 22:05:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:05:31,996 INFO L225 Difference]: With dead ends: 33357 [2019-09-07 22:05:31,997 INFO L226 Difference]: Without dead ends: 23124 [2019-09-07 22:05:32,045 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2019-09-07 22:05:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23124 states. [2019-09-07 22:05:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23124 to 21533. [2019-09-07 22:05:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21533 states. [2019-09-07 22:05:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21533 states to 21533 states and 28267 transitions. [2019-09-07 22:05:32,690 INFO L78 Accepts]: Start accepts. Automaton has 21533 states and 28267 transitions. Word has length 244 [2019-09-07 22:05:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:05:32,692 INFO L475 AbstractCegarLoop]: Abstraction has 21533 states and 28267 transitions. [2019-09-07 22:05:32,692 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:05:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 21533 states and 28267 transitions. [2019-09-07 22:05:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-09-07 22:05:32,699 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:05:32,700 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 22:05:32,700 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:05:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:05:32,701 INFO L82 PathProgramCache]: Analyzing trace with hash -669773059, now seen corresponding path program 1 times [2019-09-07 22:05:32,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:05:32,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:05:32,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:32,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:32,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 218 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:05:33,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:05:33,025 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 22:05:33,046 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 22:05:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:33,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 22:05:33,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:05:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2019-09-07 22:05:33,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:05:33,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 22:05:33,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:05:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:05:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:05:33,262 INFO L87 Difference]: Start difference. First operand 21533 states and 28267 transitions. Second operand 8 states. [2019-09-07 22:05:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:05:45,968 INFO L93 Difference]: Finished difference Result 64134 states and 90522 transitions. [2019-09-07 22:05:45,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:05:45,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 340 [2019-09-07 22:05:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:05:46,126 INFO L225 Difference]: With dead ends: 64134 [2019-09-07 22:05:46,126 INFO L226 Difference]: Without dead ends: 39319 [2019-09-07 22:05:46,180 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:05:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39319 states. [2019-09-07 22:05:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39319 to 37290. [2019-09-07 22:05:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37290 states. [2019-09-07 22:05:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37290 states to 37290 states and 46984 transitions. [2019-09-07 22:05:48,283 INFO L78 Accepts]: Start accepts. Automaton has 37290 states and 46984 transitions. Word has length 340 [2019-09-07 22:05:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:05:48,284 INFO L475 AbstractCegarLoop]: Abstraction has 37290 states and 46984 transitions. [2019-09-07 22:05:48,284 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:05:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 37290 states and 46984 transitions. [2019-09-07 22:05:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2019-09-07 22:05:48,294 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:05:48,295 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 22:05:48,295 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:05:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:05:48,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1521991041, now seen corresponding path program 1 times [2019-09-07 22:05:48,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:05:48,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:05:48,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:48,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:05:48,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:05:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 116 proven. 107 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-07 22:05:48,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:05:48,552 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) [2019-09-07 22:05:48,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:05:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:05:48,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 22:05:48,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:05:48,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:05:48,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:05:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:05:48,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:05:48,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 22:05:48,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:05:48,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:05:48,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:05:48,865 INFO L87 Difference]: Start difference. First operand 37290 states and 46984 transitions. Second operand 8 states. [2019-09-07 22:06:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:06:01,015 INFO L93 Difference]: Finished difference Result 100645 states and 129066 transitions. [2019-09-07 22:06:01,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 22:06:01,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 369 [2019-09-07 22:06:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:06:01,184 INFO L225 Difference]: With dead ends: 100645 [2019-09-07 22:06:01,184 INFO L226 Difference]: Without dead ends: 59389 [2019-09-07 22:06:01,245 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:06:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59389 states. [2019-09-07 22:06:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59389 to 55397. [2019-09-07 22:06:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55397 states. [2019-09-07 22:06:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55397 states to 55397 states and 68163 transitions. [2019-09-07 22:06:02,190 INFO L78 Accepts]: Start accepts. Automaton has 55397 states and 68163 transitions. Word has length 369 [2019-09-07 22:06:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:06:02,190 INFO L475 AbstractCegarLoop]: Abstraction has 55397 states and 68163 transitions. [2019-09-07 22:06:02,190 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:06:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 55397 states and 68163 transitions. [2019-09-07 22:06:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-09-07 22:06:02,201 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:06:02,202 INFO L399 BasicCegarLoop]: trace histogram [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, 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 22:06:02,202 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:06:02,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:06:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1806185563, now seen corresponding path program 1 times [2019-09-07 22:06:02,203 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:06:02,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:06:02,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:06:02,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:06:02,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:06:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:06:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:06:02,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:06:02,809 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 22:06:02,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:06:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:06:02,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-07 22:06:02,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:06:02,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:02,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 22:06:02,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:02,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:02,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:02,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:02,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 22:06:02,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:02,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:03,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:06:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 245 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 22:06:03,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:06:03,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2019-09-07 22:06:03,345 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 22:06:03,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 22:06:03,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:06:03,346 INFO L87 Difference]: Start difference. First operand 55397 states and 68163 transitions. Second operand 13 states. [2019-09-07 22:06:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:06:28,728 INFO L93 Difference]: Finished difference Result 166310 states and 230155 transitions. [2019-09-07 22:06:28,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2019-09-07 22:06:28,729 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 371 [2019-09-07 22:06:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:06:29,160 INFO L225 Difference]: With dead ends: 166310 [2019-09-07 22:06:29,161 INFO L226 Difference]: Without dead ends: 108676 [2019-09-07 22:06:29,264 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 410 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=708, Invalid=3848, Unknown=0, NotChecked=0, Total=4556 [2019-09-07 22:06:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108676 states. [2019-09-07 22:06:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108676 to 103962. [2019-09-07 22:06:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103962 states. [2019-09-07 22:06:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103962 states to 103962 states and 132891 transitions. [2019-09-07 22:06:32,038 INFO L78 Accepts]: Start accepts. Automaton has 103962 states and 132891 transitions. Word has length 371 [2019-09-07 22:06:32,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:06:32,038 INFO L475 AbstractCegarLoop]: Abstraction has 103962 states and 132891 transitions. [2019-09-07 22:06:32,038 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 22:06:32,039 INFO L276 IsEmpty]: Start isEmpty. Operand 103962 states and 132891 transitions. [2019-09-07 22:06:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2019-09-07 22:06:32,061 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:06:32,062 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:06:32,062 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:06:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:06:32,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1470749372, now seen corresponding path program 1 times [2019-09-07 22:06:32,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:06:32,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:06:32,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:06:32,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:06:32,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:06:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:06:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2019-09-07 22:06:32,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:06:32,609 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 22:06:32,624 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 22:06:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:06:32,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 22:06:32,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:06:32,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:32,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2019-09-07 22:06:32,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:06:32,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:06:32,952 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:06:32,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:06:32,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:06:32,954 INFO L87 Difference]: Start difference. First operand 103962 states and 132891 transitions. Second operand 9 states. [2019-09-07 22:06:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:06:42,068 INFO L93 Difference]: Finished difference Result 219024 states and 281211 transitions. [2019-09-07 22:06:42,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:06:42,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 474 [2019-09-07 22:06:42,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:06:42,377 INFO L225 Difference]: With dead ends: 219024 [2019-09-07 22:06:42,378 INFO L226 Difference]: Without dead ends: 115068 [2019-09-07 22:06:42,519 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-09-07 22:06:42,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115068 states. [2019-09-07 22:06:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115068 to 114133. [2019-09-07 22:06:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114133 states. [2019-09-07 22:06:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114133 states to 114133 states and 144581 transitions. [2019-09-07 22:06:47,180 INFO L78 Accepts]: Start accepts. Automaton has 114133 states and 144581 transitions. Word has length 474 [2019-09-07 22:06:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:06:47,181 INFO L475 AbstractCegarLoop]: Abstraction has 114133 states and 144581 transitions. [2019-09-07 22:06:47,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:06:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 114133 states and 144581 transitions. [2019-09-07 22:06:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2019-09-07 22:06:47,204 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:06:47,205 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:06:47,205 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:06:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:06:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash 436361576, now seen corresponding path program 1 times [2019-09-07 22:06:47,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:06:47,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:06:47,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:06:47,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:06:47,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:06:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:06:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-09-07 22:06:48,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:06:48,349 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 22:06:48,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:06:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:06:48,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:06:48,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:06:48,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:06:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-09-07 22:06:48,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:06:48,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:06:48,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:06:48,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:06:48,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:06:48,705 INFO L87 Difference]: Start difference. First operand 114133 states and 144581 transitions. Second operand 9 states. [2019-09-07 22:07:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:07:13,027 INFO L93 Difference]: Finished difference Result 298497 states and 420844 transitions. [2019-09-07 22:07:13,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-07 22:07:13,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 509 [2019-09-07 22:07:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:07:17,360 INFO L225 Difference]: With dead ends: 298497 [2019-09-07 22:07:17,360 INFO L226 Difference]: Without dead ends: 182203 [2019-09-07 22:07:17,569 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=2246, Unknown=0, NotChecked=0, Total=2756 [2019-09-07 22:07:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182203 states. [2019-09-07 22:07:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182203 to 168233. [2019-09-07 22:07:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168233 states. [2019-09-07 22:07:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168233 states to 168233 states and 215216 transitions. [2019-09-07 22:07:20,660 INFO L78 Accepts]: Start accepts. Automaton has 168233 states and 215216 transitions. Word has length 509 [2019-09-07 22:07:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:07:20,661 INFO L475 AbstractCegarLoop]: Abstraction has 168233 states and 215216 transitions. [2019-09-07 22:07:20,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:07:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 168233 states and 215216 transitions. [2019-09-07 22:07:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2019-09-07 22:07:20,682 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:07:20,682 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:07:20,683 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:07:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:07:20,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1796571436, now seen corresponding path program 1 times [2019-09-07 22:07:20,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:07:20,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:07:20,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:07:20,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:07:20,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:07:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:07:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 201 proven. 78 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2019-09-07 22:07:21,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:07:21,067 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 22:07:21,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:07:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:07:21,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 22:07:21,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:07:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 351 proven. 8 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2019-09-07 22:07:21,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:07:21,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 22:07:21,400 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 22:07:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 22:07:21,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:07:21,401 INFO L87 Difference]: Start difference. First operand 168233 states and 215216 transitions. Second operand 10 states. [2019-09-07 22:07:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:07:44,382 INFO L93 Difference]: Finished difference Result 427802 states and 555829 transitions. [2019-09-07 22:07:44,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-07 22:07:44,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 518 [2019-09-07 22:07:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:07:45,293 INFO L225 Difference]: With dead ends: 427802 [2019-09-07 22:07:45,293 INFO L226 Difference]: Without dead ends: 254735 [2019-09-07 22:07:45,522 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=1282, Unknown=0, NotChecked=0, Total=1640 [2019-09-07 22:07:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254735 states. [2019-09-07 22:07:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254735 to 216107. [2019-09-07 22:07:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216107 states. [2019-09-07 22:07:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216107 states to 216107 states and 265319 transitions. [2019-09-07 22:07:49,336 INFO L78 Accepts]: Start accepts. Automaton has 216107 states and 265319 transitions. Word has length 518 [2019-09-07 22:07:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:07:49,337 INFO L475 AbstractCegarLoop]: Abstraction has 216107 states and 265319 transitions. [2019-09-07 22:07:49,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 22:07:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 216107 states and 265319 transitions. [2019-09-07 22:07:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2019-09-07 22:07:49,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:07:49,360 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:07:49,361 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:07:49,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:07:49,361 INFO L82 PathProgramCache]: Analyzing trace with hash 951113820, now seen corresponding path program 1 times [2019-09-07 22:07:49,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:07:49,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:07:49,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:07:49,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:07:49,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:07:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:07:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2019-09-07 22:07:53,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:07:53,158 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 22:07:53,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:07:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:07:53,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 22:07:53,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:07:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2019-09-07 22:07:53,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:07:53,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 22:07:53,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:07:53,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:07:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:07:53,538 INFO L87 Difference]: Start difference. First operand 216107 states and 265319 transitions. Second operand 8 states. [2019-09-07 22:08:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:08:03,499 INFO L93 Difference]: Finished difference Result 457682 states and 560479 transitions. [2019-09-07 22:08:03,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 22:08:03,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 549 [2019-09-07 22:08:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:08:04,103 INFO L225 Difference]: With dead ends: 457682 [2019-09-07 22:08:04,103 INFO L226 Difference]: Without dead ends: 236135 [2019-09-07 22:08:04,344 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:08:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236135 states. [2019-09-07 22:08:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236135 to 220374. [2019-09-07 22:08:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220374 states. [2019-09-07 22:08:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220374 states to 220374 states and 263763 transitions. [2019-09-07 22:08:12,785 INFO L78 Accepts]: Start accepts. Automaton has 220374 states and 263763 transitions. Word has length 549 [2019-09-07 22:08:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:08:12,786 INFO L475 AbstractCegarLoop]: Abstraction has 220374 states and 263763 transitions. [2019-09-07 22:08:12,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:08:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 220374 states and 263763 transitions. [2019-09-07 22:08:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2019-09-07 22:08:12,811 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:08:12,811 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:08:12,812 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:08:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:08:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash -694000031, now seen corresponding path program 1 times [2019-09-07 22:08:12,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:08:12,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:08:12,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:08:12,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:08:12,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:08:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:08:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2019-09-07 22:08:13,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:08:13,196 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 22:08:13,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:08:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:08:13,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 22:08:13,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:08:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2019-09-07 22:08:13,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:08:13,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 22:08:13,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 22:08:13,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 22:08:13,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:08:13,531 INFO L87 Difference]: Start difference. First operand 220374 states and 263763 transitions. Second operand 10 states. [2019-09-07 22:08:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:08:33,644 INFO L93 Difference]: Finished difference Result 489896 states and 597229 transitions. [2019-09-07 22:08:33,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-07 22:08:33,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 567 [2019-09-07 22:08:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:08:34,847 INFO L225 Difference]: With dead ends: 489896 [2019-09-07 22:08:34,848 INFO L226 Difference]: Without dead ends: 260624 [2019-09-07 22:08:35,055 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=674, Invalid=3358, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 22:08:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260624 states. [2019-09-07 22:08:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260624 to 250523. [2019-09-07 22:08:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250523 states. [2019-09-07 22:08:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250523 states to 250523 states and 286103 transitions. [2019-09-07 22:08:38,371 INFO L78 Accepts]: Start accepts. Automaton has 250523 states and 286103 transitions. Word has length 567 [2019-09-07 22:08:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:08:38,371 INFO L475 AbstractCegarLoop]: Abstraction has 250523 states and 286103 transitions. [2019-09-07 22:08:38,371 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 22:08:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 250523 states and 286103 transitions. [2019-09-07 22:08:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2019-09-07 22:08:38,403 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:08:38,403 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-09-07 22:08:38,403 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:08:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:08:38,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1713214300, now seen corresponding path program 1 times [2019-09-07 22:08:38,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:08:38,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:08:38,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:08:38,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:08:38,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:08:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:08:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2019-09-07 22:08:43,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:08:43,099 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:08:43,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:08:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:08:43,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:08:43,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:08:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:08:43,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:08:43,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-09-07 22:08:43,696 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:08:43,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:08:43,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:08:43,697 INFO L87 Difference]: Start difference. First operand 250523 states and 286103 transitions. Second operand 6 states. [2019-09-07 22:08:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:08:49,036 INFO L93 Difference]: Finished difference Result 502674 states and 572698 transitions. [2019-09-07 22:08:49,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 22:08:49,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 732 [2019-09-07 22:08:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:08:49,615 INFO L225 Difference]: With dead ends: 502674 [2019-09-07 22:08:49,616 INFO L226 Difference]: Without dead ends: 252157 [2019-09-07 22:08:49,878 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 736 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-09-07 22:08:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252157 states. [2019-09-07 22:08:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252157 to 239330. [2019-09-07 22:08:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239330 states. [2019-09-07 22:08:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239330 states to 239330 states and 267699 transitions. [2019-09-07 22:08:58,227 INFO L78 Accepts]: Start accepts. Automaton has 239330 states and 267699 transitions. Word has length 732 [2019-09-07 22:08:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:08:58,228 INFO L475 AbstractCegarLoop]: Abstraction has 239330 states and 267699 transitions. [2019-09-07 22:08:58,228 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:08:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 239330 states and 267699 transitions. [2019-09-07 22:08:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2019-09-07 22:08:58,300 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:08:58,300 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:08:58,301 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:08:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:08:58,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2053208444, now seen corresponding path program 1 times [2019-09-07 22:08:58,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:08:58,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:08:58,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:08:58,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:08:58,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:08:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:09:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 291 proven. 307 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-07 22:09:00,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:09:00,548 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:09:00,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:09:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:09:00,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-07 22:09:00,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:09:00,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 22:09:00,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:00,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:01,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:01,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:09:01,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:09:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 527 proven. 118 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-09-07 22:09:08,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:09:08,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2019-09-07 22:09:08,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 22:09:08,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 22:09:08,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=437, Unknown=1, NotChecked=0, Total=506 [2019-09-07 22:09:08,660 INFO L87 Difference]: Start difference. First operand 239330 states and 267699 transitions. Second operand 23 states. [2019-09-07 22:09:18,130 WARN L188 SmtUtils]: Spent 6.86 s on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2019-09-07 22:09:27,543 WARN L188 SmtUtils]: Spent 9.25 s on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2019-09-07 22:09:59,763 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2019-09-07 22:10:01,340 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2019-09-07 22:10:25,857 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2019-09-07 22:10:52,155 WARN L188 SmtUtils]: Spent 7.61 s on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2019-09-07 22:11:20,875 WARN L188 SmtUtils]: Spent 7.06 s on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2019-09-07 22:11:21,257 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2019-09-07 22:11:27,574 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2019-09-07 22:11:28,796 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2019-09-07 22:11:56,842 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2019-09-07 22:12:02,497 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 59 [2019-09-07 22:12:27,390 WARN L188 SmtUtils]: Spent 7.79 s on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2019-09-07 22:12:44,144 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2019-09-07 22:13:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:13:17,502 INFO L93 Difference]: Finished difference Result 495058 states and 553819 transitions. [2019-09-07 22:13:17,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-09-07 22:13:17,502 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 814 [2019-09-07 22:13:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:13:18,063 INFO L225 Difference]: With dead ends: 495058 [2019-09-07 22:13:18,064 INFO L226 Difference]: Without dead ends: 255734 [2019-09-07 22:13:18,262 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 889 SyntacticMatches, 7 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6100 ImplicationChecksByTransitivity, 88.2s TimeCoverageRelationStatistics Valid=2244, Invalid=13994, Unknown=18, NotChecked=0, Total=16256 [2019-09-07 22:13:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255734 states. [2019-09-07 22:13:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255734 to 243806. [2019-09-07 22:13:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243806 states. [2019-09-07 22:13:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243806 states to 243806 states and 271116 transitions. [2019-09-07 22:13:22,742 INFO L78 Accepts]: Start accepts. Automaton has 243806 states and 271116 transitions. Word has length 814 [2019-09-07 22:13:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:13:22,742 INFO L475 AbstractCegarLoop]: Abstraction has 243806 states and 271116 transitions. [2019-09-07 22:13:22,742 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-07 22:13:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 243806 states and 271116 transitions. [2019-09-07 22:13:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2019-09-07 22:13:22,888 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:13:22,889 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2019-09-07 22:13:22,889 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:13:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:13:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1736927069, now seen corresponding path program 1 times [2019-09-07 22:13:22,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:13:22,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:13:22,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:13:22,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:13:22,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:13:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:13:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 332 proven. 414 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2019-09-07 22:13:25,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:13:25,259 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:13:25,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:13:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:13:25,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-07 22:13:25,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:13:25,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 22:13:25,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:25,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:28,553 WARN L188 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 22:13:28,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:13:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 986 proven. 324 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2019-09-07 22:13:35,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:13:35,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-09-07 22:13:35,261 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 22:13:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 22:13:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=143, Unknown=1, NotChecked=0, Total=182 [2019-09-07 22:13:35,262 INFO L87 Difference]: Start difference. First operand 243806 states and 271116 transitions. Second operand 14 states. [2019-09-07 22:13:39,029 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 23 [2019-09-07 22:13:40,464 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 41 DAG size of output: 17 [2019-09-07 22:15:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:15:18,669 INFO L93 Difference]: Finished difference Result 525610 states and 584329 transitions. [2019-09-07 22:15:18,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 22:15:18,670 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1075 [2019-09-07 22:15:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:15:19,298 INFO L225 Difference]: With dead ends: 525610 [2019-09-07 22:15:19,299 INFO L226 Difference]: Without dead ends: 281810 [2019-09-07 22:15:19,480 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1081 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=189, Invalid=738, Unknown=3, NotChecked=0, Total=930 [2019-09-07 22:15:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281810 states. [2019-09-07 22:15:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281810 to 273607. [2019-09-07 22:15:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273607 states. [2019-09-07 22:15:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273607 states to 273607 states and 302134 transitions. [2019-09-07 22:15:23,514 INFO L78 Accepts]: Start accepts. Automaton has 273607 states and 302134 transitions. Word has length 1075 [2019-09-07 22:15:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:15:23,515 INFO L475 AbstractCegarLoop]: Abstraction has 273607 states and 302134 transitions. [2019-09-07 22:15:23,515 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 22:15:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 273607 states and 302134 transitions. [2019-09-07 22:15:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2019-09-07 22:15:23,671 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:15:23,672 INFO L399 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 22:15:23,672 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:15:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:15:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1568691332, now seen corresponding path program 1 times [2019-09-07 22:15:23,673 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:15:23,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:15:23,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:15:23,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:15:23,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:15:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:15:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 946 proven. 13 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2019-09-07 22:15:26,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:15:26,281 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:15:26,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:15:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:15:26,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 22:15:26,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:15:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 1250 proven. 9 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2019-09-07 22:15:27,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:15:27,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-09-07 22:15:27,609 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:15:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:15:27,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:15:27,610 INFO L87 Difference]: Start difference. First operand 273607 states and 302134 transitions. Second operand 9 states. [2019-09-07 22:15:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:15:38,386 INFO L93 Difference]: Finished difference Result 550531 states and 607185 transitions. [2019-09-07 22:15:38,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:15:38,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1100 [2019-09-07 22:15:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:15:38,997 INFO L225 Difference]: With dead ends: 550531 [2019-09-07 22:15:38,997 INFO L226 Difference]: Without dead ends: 295004 [2019-09-07 22:15:39,206 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1127 GetRequests, 1113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-09-07 22:15:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295004 states. [2019-09-07 22:15:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295004 to 288295. [2019-09-07 22:15:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288295 states. [2019-09-07 22:15:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288295 states to 288295 states and 316591 transitions. [2019-09-07 22:15:46,657 INFO L78 Accepts]: Start accepts. Automaton has 288295 states and 316591 transitions. Word has length 1100 [2019-09-07 22:15:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:15:46,658 INFO L475 AbstractCegarLoop]: Abstraction has 288295 states and 316591 transitions. [2019-09-07 22:15:46,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:15:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 288295 states and 316591 transitions. [2019-09-07 22:15:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2019-09-07 22:15:47,418 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:15:47,419 INFO L399 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:47,419 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:15:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:15:47,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1016934747, now seen corresponding path program 1 times [2019-09-07 22:15:47,420 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:15:47,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:15:47,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:15:47,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:15:47,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:15:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:15:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 73 proven. 856 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2019-09-07 22:15:53,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:15:53,663 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:15:53,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:15:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:15:54,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-07 22:15:54,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:15:54,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 22:15:54,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:54,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:56,802 WARN L188 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 154 DAG size of output: 46 [2019-09-07 22:15:56,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:56,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 22:15:56,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:15:57,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:15:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 850 proven. 55 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2019-09-07 22:15:58,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:15:58,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2019-09-07 22:15:58,190 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 22:15:58,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 22:15:58,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2019-09-07 22:15:58,191 INFO L87 Difference]: Start difference. First operand 288295 states and 316591 transitions. Second operand 22 states. [2019-09-07 22:16:05,388 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-07 22:16:06,170 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-09-07 22:16:08,915 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-07 22:16:09,200 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-07 22:16:09,858 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 22:16:11,376 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-09-07 22:16:11,922 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-07 22:16:12,283 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-07 22:16:12,609 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 22:16:13,716 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-07 22:16:15,205 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-07 22:16:16,001 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-09-07 22:16:16,347 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-07 22:16:17,040 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-07 22:16:18,481 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-07 22:16:19,032 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 22:16:19,397 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-09-07 22:16:20,917 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 22:16:22,409 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-07 22:16:22,657 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-07 22:16:23,506 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-07 22:16:24,725 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-07 22:16:24,924 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-07 22:16:25,684 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-07 22:16:26,105 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-07 22:16:26,483 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-07 22:16:27,492 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-09-07 22:16:28,116 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-07 22:16:29,311 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-07 22:16:30,144 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-07 22:16:30,493 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 22:16:31,847 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-07 22:16:32,331 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-07 22:16:32,510 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-07 22:16:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:16:33,765 INFO L93 Difference]: Finished difference Result 599020 states and 656643 transitions. [2019-09-07 22:16:33,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-09-07 22:16:33,765 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1125 [2019-09-07 22:16:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:16:34,418 INFO L225 Difference]: With dead ends: 599020 [2019-09-07 22:16:34,419 INFO L226 Difference]: Without dead ends: 328805 [2019-09-07 22:16:34,580 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1200 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6209 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=2463, Invalid=14307, Unknown=0, NotChecked=0, Total=16770 [2019-09-07 22:16:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328805 states. [2019-09-07 22:16:39,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328805 to 321619. [2019-09-07 22:16:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321619 states. [2019-09-07 22:16:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321619 states to 321619 states and 352365 transitions. [2019-09-07 22:16:39,625 INFO L78 Accepts]: Start accepts. Automaton has 321619 states and 352365 transitions. Word has length 1125 [2019-09-07 22:16:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:16:39,626 INFO L475 AbstractCegarLoop]: Abstraction has 321619 states and 352365 transitions. [2019-09-07 22:16:39,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-07 22:16:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 321619 states and 352365 transitions. [2019-09-07 22:16:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2019-09-07 22:16:39,744 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:16:39,744 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:16:39,745 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:16:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:16:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1664863505, now seen corresponding path program 1 times [2019-09-07 22:16:39,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:16:39,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:16:39,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:16:39,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:16:39,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:16:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:16:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 343 proven. 1025 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2019-09-07 22:16:43,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:16:43,347 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:16:43,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:16:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:16:43,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 22:16:43,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:16:43,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:16:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 1297 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-09-07 22:16:49,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:16:49,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 22:16:49,463 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 22:16:49,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 22:16:49,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-07 22:16:49,463 INFO L87 Difference]: Start difference. First operand 321619 states and 352365 transitions. Second operand 11 states. [2019-09-07 22:17:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:06,519 INFO L93 Difference]: Finished difference Result 647354 states and 712777 transitions. [2019-09-07 22:17:06,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-07 22:17:06,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1144 [2019-09-07 22:17:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:07,946 INFO L225 Difference]: With dead ends: 647354 [2019-09-07 22:17:07,946 INFO L226 Difference]: Without dead ends: 371398 [2019-09-07 22:17:08,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=557, Invalid=2523, Unknown=0, NotChecked=0, Total=3080 [2019-09-07 22:17:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371398 states.