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/Problem03_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:25:21,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:25:21,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:25:22,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 13:25:22,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 13:25:22,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 13:25:22,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 13:25:22,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 13:25:22,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 13:25:22,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 13:25:22,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 13:25:22,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 13:25:22,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:25:22,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:25:22,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:25:22,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:25:22,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:25:22,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:25:22,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:25:22,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:25:22,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:25:22,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:25:22,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:25:22,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:25:22,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 13:25:22,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 13:25:22,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 13:25:22,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 13:25:22,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 13:25:22,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 13:25:22,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 13:25:22,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 13:25:22,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 13:25:22,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 13:25:22,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 13:25:22,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 13:25:22,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 13:25:22,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 13:25:22,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:25:22,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:25:22,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:25:22,064 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 13:25:22,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:25:22,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:25:22,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:25:22,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:25:22,087 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:25:22,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:25:22,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:25:22,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:25:22,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:25:22,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:25:22,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:25:22,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:25:22,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:25:22,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:25:22,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:25:22,089 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:25:22,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:25:22,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:25:22,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:25:22,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:25:22,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:25:22,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:25:22,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:25:22,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:25:22,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:25:22,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:25:22,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:25:22,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:25:22,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:25:22,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:25:22,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:25:22,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:25:22,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:25:22,157 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:25:22,158 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label35.c [2019-09-07 13:25:22,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae88478cd/d3e66e679f33473489a5d3536cdb73d1/FLAG5afb8ba0f [2019-09-07 13:25:22,875 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:25:22,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label35.c [2019-09-07 13:25:22,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae88478cd/d3e66e679f33473489a5d3536cdb73d1/FLAG5afb8ba0f [2019-09-07 13:25:23,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae88478cd/d3e66e679f33473489a5d3536cdb73d1 [2019-09-07 13:25:23,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:25:23,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:25:23,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:25:23,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:25:23,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:25:23,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:25:23" (1/1) ... [2019-09-07 13:25:23,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350e246b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:23, skipping insertion in model container [2019-09-07 13:25:23,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:25:23" (1/1) ... [2019-09-07 13:25:23,109 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:25:23,196 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:25:24,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:25:24,046 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:25:24,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:25:24,351 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:25:24,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24 WrapperNode [2019-09-07 13:25:24,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:25:24,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:25:24,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:25:24,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:25:24,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (1/1) ... [2019-09-07 13:25:24,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:25:24,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:25:24,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:25:24,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:25:24,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (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 13:25:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:25:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:25:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:25:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:25:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:25:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:25:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:25:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:25:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:25:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:25:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:25:26,551 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:25:26,552 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:25:26,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:25:26 BoogieIcfgContainer [2019-09-07 13:25:26,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:25:26,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:25:26,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:25:26,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:25:26,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:25:23" (1/3) ... [2019-09-07 13:25:26,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598fe344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:25:26, skipping insertion in model container [2019-09-07 13:25:26,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:25:24" (2/3) ... [2019-09-07 13:25:26,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598fe344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:25:26, skipping insertion in model container [2019-09-07 13:25:26,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:25:26" (3/3) ... [2019-09-07 13:25:26,563 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label35.c [2019-09-07 13:25:26,574 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:25:26,584 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:25:26,605 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:25:26,662 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:25:26,663 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:25:26,665 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:25:26,666 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:25:26,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:25:26,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:25:26,666 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:25:26,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:25:26,667 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:25:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:25:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-07 13:25:26,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:26,731 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:26,733 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:26,740 INFO L82 PathProgramCache]: Analyzing trace with hash -300467840, now seen corresponding path program 1 times [2019-09-07 13:25:26,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:26,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:26,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:26,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:26,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:27,646 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 13:25:27,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:25:27,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 13:25:27,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 13:25:27,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 13:25:27,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:25:27,671 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-07 13:25:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:29,908 INFO L93 Difference]: Finished difference Result 1073 states and 1923 transitions. [2019-09-07 13:25:29,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 13:25:29,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-09-07 13:25:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:29,936 INFO L225 Difference]: With dead ends: 1073 [2019-09-07 13:25:29,936 INFO L226 Difference]: Without dead ends: 680 [2019-09-07 13:25:29,945 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 13:25:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-09-07 13:25:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 457. [2019-09-07 13:25:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2019-09-07 13:25:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 751 transitions. [2019-09-07 13:25:30,050 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 751 transitions. Word has length 151 [2019-09-07 13:25:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:30,054 INFO L475 AbstractCegarLoop]: Abstraction has 457 states and 751 transitions. [2019-09-07 13:25:30,054 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 13:25:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 751 transitions. [2019-09-07 13:25:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-09-07 13:25:30,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:30,070 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:30,070 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:30,071 INFO L82 PathProgramCache]: Analyzing trace with hash -481893145, now seen corresponding path program 1 times [2019-09-07 13:25:30,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:30,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:30,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:30,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:30,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:25:30,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:25:30,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:25:30,357 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:25:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:25:30,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:25:30,358 INFO L87 Difference]: Start difference. First operand 457 states and 751 transitions. Second operand 6 states. [2019-09-07 13:25:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:31,987 INFO L93 Difference]: Finished difference Result 1352 states and 2254 transitions. [2019-09-07 13:25:31,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:25:31,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2019-09-07 13:25:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:31,996 INFO L225 Difference]: With dead ends: 1352 [2019-09-07 13:25:31,997 INFO L226 Difference]: Without dead ends: 901 [2019-09-07 13:25:31,999 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:25:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2019-09-07 13:25:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 885. [2019-09-07 13:25:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-09-07 13:25:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1304 transitions. [2019-09-07 13:25:32,063 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1304 transitions. Word has length 178 [2019-09-07 13:25:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:32,063 INFO L475 AbstractCegarLoop]: Abstraction has 885 states and 1304 transitions. [2019-09-07 13:25:32,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:25:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1304 transitions. [2019-09-07 13:25:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-09-07 13:25:32,071 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:32,072 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:32,072 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -88394329, now seen corresponding path program 1 times [2019-09-07 13:25:32,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:32,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:32,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:25:32,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:25:32,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:25:32,273 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:25:32,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:25:32,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:25:32,274 INFO L87 Difference]: Start difference. First operand 885 states and 1304 transitions. Second operand 6 states. [2019-09-07 13:25:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:33,864 INFO L93 Difference]: Finished difference Result 2662 states and 4066 transitions. [2019-09-07 13:25:33,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:25:33,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2019-09-07 13:25:33,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:33,878 INFO L225 Difference]: With dead ends: 2662 [2019-09-07 13:25:33,878 INFO L226 Difference]: Without dead ends: 1783 [2019-09-07 13:25:33,882 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 13:25:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2019-09-07 13:25:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1748. [2019-09-07 13:25:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-09-07 13:25:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2577 transitions. [2019-09-07 13:25:33,959 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2577 transitions. Word has length 185 [2019-09-07 13:25:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:33,960 INFO L475 AbstractCegarLoop]: Abstraction has 1748 states and 2577 transitions. [2019-09-07 13:25:33,960 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:25:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2577 transitions. [2019-09-07 13:25:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-07 13:25:33,967 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:33,968 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:25:33,968 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:33,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1924314542, now seen corresponding path program 1 times [2019-09-07 13:25:33,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:33,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:33,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:33,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:33,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:25:34,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:25:34,331 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) [2019-09-07 13:25:34,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:25:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:34,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:25:34,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:25:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:25:34,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:25:34,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 13:25:34,776 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:25:34,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:25:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:25:34,780 INFO L87 Difference]: Start difference. First operand 1748 states and 2577 transitions. Second operand 8 states. [2019-09-07 13:25:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:39,179 INFO L93 Difference]: Finished difference Result 12955 states and 23006 transitions. [2019-09-07 13:25:39,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 13:25:39,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-09-07 13:25:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:39,292 INFO L225 Difference]: With dead ends: 12955 [2019-09-07 13:25:39,292 INFO L226 Difference]: Without dead ends: 11213 [2019-09-07 13:25:39,304 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2019-09-07 13:25:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2019-09-07 13:25:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 11064. [2019-09-07 13:25:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11064 states. [2019-09-07 13:25:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11064 states to 11064 states and 18637 transitions. [2019-09-07 13:25:39,778 INFO L78 Accepts]: Start accepts. Automaton has 11064 states and 18637 transitions. Word has length 196 [2019-09-07 13:25:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:39,780 INFO L475 AbstractCegarLoop]: Abstraction has 11064 states and 18637 transitions. [2019-09-07 13:25:39,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:25:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11064 states and 18637 transitions. [2019-09-07 13:25:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-09-07 13:25:39,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:39,833 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:39,834 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:39,834 INFO L82 PathProgramCache]: Analyzing trace with hash 603932535, now seen corresponding path program 1 times [2019-09-07 13:25:39,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:39,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:39,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:39,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:39,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 66 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:25:40,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:25:40,013 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 13:25:40,027 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 13:25:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:40,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:25:40,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:25:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:25:40,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:25:40,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:25:40,336 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:25:40,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:25:40,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:25:40,337 INFO L87 Difference]: Start difference. First operand 11064 states and 18637 transitions. Second operand 9 states. [2019-09-07 13:25:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:42,276 INFO L93 Difference]: Finished difference Result 27638 states and 50482 transitions. [2019-09-07 13:25:42,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:25:42,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2019-09-07 13:25:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:42,439 INFO L225 Difference]: With dead ends: 27638 [2019-09-07 13:25:42,439 INFO L226 Difference]: Without dead ends: 16580 [2019-09-07 13:25:42,512 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:25:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16580 states. [2019-09-07 13:25:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16580 to 16236. [2019-09-07 13:25:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16236 states. [2019-09-07 13:25:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16236 states to 16236 states and 25649 transitions. [2019-09-07 13:25:43,752 INFO L78 Accepts]: Start accepts. Automaton has 16236 states and 25649 transitions. Word has length 227 [2019-09-07 13:25:43,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:43,753 INFO L475 AbstractCegarLoop]: Abstraction has 16236 states and 25649 transitions. [2019-09-07 13:25:43,753 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:25:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16236 states and 25649 transitions. [2019-09-07 13:25:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-09-07 13:25:43,809 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:43,810 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, 2, 2, 2, 2, 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] [2019-09-07 13:25:43,810 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash 122875531, now seen corresponding path program 1 times [2019-09-07 13:25:43,811 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:43,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:43,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 13:25:43,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:25:43,956 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 13:25:43,970 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 13:25:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:44,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:25:44,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:25:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:25:44,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:25:44,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:25:44,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:25:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:25:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:25:44,292 INFO L87 Difference]: Start difference. First operand 16236 states and 25649 transitions. Second operand 9 states. [2019-09-07 13:25:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:48,572 INFO L93 Difference]: Finished difference Result 60388 states and 107143 transitions. [2019-09-07 13:25:48,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:25:48,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-09-07 13:25:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:48,844 INFO L225 Difference]: With dead ends: 60388 [2019-09-07 13:25:48,845 INFO L226 Difference]: Without dead ends: 44158 [2019-09-07 13:25:48,923 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:25:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44158 states. [2019-09-07 13:25:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44158 to 39530. [2019-09-07 13:25:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39530 states. [2019-09-07 13:25:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39530 states to 39530 states and 63426 transitions. [2019-09-07 13:25:50,745 INFO L78 Accepts]: Start accepts. Automaton has 39530 states and 63426 transitions. Word has length 239 [2019-09-07 13:25:50,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:50,746 INFO L475 AbstractCegarLoop]: Abstraction has 39530 states and 63426 transitions. [2019-09-07 13:25:50,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:25:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 39530 states and 63426 transitions. [2019-09-07 13:25:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-09-07 13:25:50,869 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:50,869 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:50,870 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:50,870 INFO L82 PathProgramCache]: Analyzing trace with hash 780905833, now seen corresponding path program 1 times [2019-09-07 13:25:50,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:50,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:50,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:50,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:50,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:25:51,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:25:51,097 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:25:51,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:51,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:25:51,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:25:51,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:25:51,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:25:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:25:51,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:25:51,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2019-09-07 13:25:51,428 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:25:51,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:25:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:25:51,429 INFO L87 Difference]: Start difference. First operand 39530 states and 63426 transitions. Second operand 11 states. [2019-09-07 13:25:53,035 WARN L188 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2019-09-07 13:25:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:57,896 INFO L93 Difference]: Finished difference Result 82215 states and 140514 transitions. [2019-09-07 13:25:57,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 13:25:57,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 280 [2019-09-07 13:25:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:58,201 INFO L225 Difference]: With dead ends: 82215 [2019-09-07 13:25:58,202 INFO L226 Difference]: Without dead ends: 42903 [2019-09-07 13:25:58,308 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2019-09-07 13:25:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42903 states. [2019-09-07 13:26:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42903 to 39604. [2019-09-07 13:26:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39604 states. [2019-09-07 13:26:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39604 states to 39604 states and 63589 transitions. [2019-09-07 13:26:00,625 INFO L78 Accepts]: Start accepts. Automaton has 39604 states and 63589 transitions. Word has length 280 [2019-09-07 13:26:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:26:00,626 INFO L475 AbstractCegarLoop]: Abstraction has 39604 states and 63589 transitions. [2019-09-07 13:26:00,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:26:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 39604 states and 63589 transitions. [2019-09-07 13:26:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-09-07 13:26:00,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:26:00,752 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:26:00,752 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:26:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:26:00,753 INFO L82 PathProgramCache]: Analyzing trace with hash -455191754, now seen corresponding path program 1 times [2019-09-07 13:26:00,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:26:00,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:26:00,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:00,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:26:00,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 123 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:26:01,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:26:01,051 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:26:01,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:26:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:01,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:26:01,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:26:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-07 13:26:01,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:26:01,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:26:01,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:26:01,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:26:01,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:26:01,351 INFO L87 Difference]: Start difference. First operand 39604 states and 63589 transitions. Second operand 9 states. [2019-09-07 13:26:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:26:05,479 INFO L93 Difference]: Finished difference Result 133240 states and 224500 transitions. [2019-09-07 13:26:05,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 13:26:05,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 282 [2019-09-07 13:26:05,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:26:06,186 INFO L225 Difference]: With dead ends: 133240 [2019-09-07 13:26:06,186 INFO L226 Difference]: Without dead ends: 95723 [2019-09-07 13:26:06,334 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:26:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95723 states. [2019-09-07 13:26:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95723 to 83833. [2019-09-07 13:26:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83833 states. [2019-09-07 13:26:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83833 states to 83833 states and 135817 transitions. [2019-09-07 13:26:11,826 INFO L78 Accepts]: Start accepts. Automaton has 83833 states and 135817 transitions. Word has length 282 [2019-09-07 13:26:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:26:11,827 INFO L475 AbstractCegarLoop]: Abstraction has 83833 states and 135817 transitions. [2019-09-07 13:26:11,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:26:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 83833 states and 135817 transitions. [2019-09-07 13:26:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-09-07 13:26:12,099 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:26:12,099 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:26:12,100 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:26:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:26:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash -447221064, now seen corresponding path program 1 times [2019-09-07 13:26:12,101 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:26:12,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:26:12,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:12,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:26:12,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:26:12,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:26:12,435 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) [2019-09-07 13:26:12,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:26:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:12,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:26:12,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:26:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-07 13:26:12,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:26:12,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:26:12,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:26:12,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:26:12,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:26:12,743 INFO L87 Difference]: Start difference. First operand 83833 states and 135817 transitions. Second operand 9 states. [2019-09-07 13:26:15,021 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-09-07 13:26:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:26:24,844 INFO L93 Difference]: Finished difference Result 204592 states and 441824 transitions. [2019-09-07 13:26:24,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-09-07 13:26:24,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2019-09-07 13:26:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:26:25,913 INFO L225 Difference]: With dead ends: 204592 [2019-09-07 13:26:25,913 INFO L226 Difference]: Without dead ends: 120781 [2019-09-07 13:26:26,179 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=288, Invalid=1352, Unknown=0, NotChecked=0, Total=1640 [2019-09-07 13:26:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120781 states. [2019-09-07 13:26:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120781 to 111611. [2019-09-07 13:26:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111611 states. [2019-09-07 13:26:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111611 states to 111611 states and 166798 transitions. [2019-09-07 13:26:33,422 INFO L78 Accepts]: Start accepts. Automaton has 111611 states and 166798 transitions. Word has length 297 [2019-09-07 13:26:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:26:33,423 INFO L475 AbstractCegarLoop]: Abstraction has 111611 states and 166798 transitions. [2019-09-07 13:26:33,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:26:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 111611 states and 166798 transitions. [2019-09-07 13:26:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2019-09-07 13:26:33,688 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:26:33,688 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:26:33,688 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:26:33,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:26:33,689 INFO L82 PathProgramCache]: Analyzing trace with hash 399606510, now seen corresponding path program 1 times [2019-09-07 13:26:33,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:26:33,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:26:33,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:33,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:26:33,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 207 proven. 38 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 13:26:33,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:26:33,926 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:26:33,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:26:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:34,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:26:34,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:26:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-07 13:26:34,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:26:34,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 13:26:34,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:26:34,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:26:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:26:34,726 INFO L87 Difference]: Start difference. First operand 111611 states and 166798 transitions. Second operand 7 states. [2019-09-07 13:26:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:26:43,778 INFO L93 Difference]: Finished difference Result 278978 states and 474249 transitions. [2019-09-07 13:26:43,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:26:43,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2019-09-07 13:26:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:26:44,681 INFO L225 Difference]: With dead ends: 278978 [2019-09-07 13:26:44,681 INFO L226 Difference]: Without dead ends: 167801 [2019-09-07 13:26:44,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:26:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167801 states. [2019-09-07 13:26:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167801 to 155331. [2019-09-07 13:26:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155331 states. [2019-09-07 13:26:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155331 states to 155331 states and 223413 transitions. [2019-09-07 13:26:49,527 INFO L78 Accepts]: Start accepts. Automaton has 155331 states and 223413 transitions. Word has length 344 [2019-09-07 13:26:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:26:49,527 INFO L475 AbstractCegarLoop]: Abstraction has 155331 states and 223413 transitions. [2019-09-07 13:26:49,527 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:26:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 155331 states and 223413 transitions. [2019-09-07 13:26:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2019-09-07 13:26:50,523 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:26:50,524 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:26:50,524 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:26:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:26:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2108030261, now seen corresponding path program 1 times [2019-09-07 13:26:50,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:26:50,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:26:50,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:50,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:26:50,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:26:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 211 proven. 95 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-09-07 13:26:50,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:26:50,881 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) [2019-09-07 13:26:50,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:26:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:26:51,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:26:51,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:26:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:26:51,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:26:51,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:26:51,259 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:26:51,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:26:51,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:26:51,260 INFO L87 Difference]: Start difference. First operand 155331 states and 223413 transitions. Second operand 9 states. [2019-09-07 13:27:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:27:19,643 INFO L93 Difference]: Finished difference Result 535417 states and 1119769 transitions. [2019-09-07 13:27:19,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-07 13:27:19,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 354 [2019-09-07 13:27:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:27:23,203 INFO L225 Difference]: With dead ends: 535417 [2019-09-07 13:27:23,203 INFO L226 Difference]: Without dead ends: 382523 [2019-09-07 13:27:23,708 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=400, Invalid=1762, Unknown=0, NotChecked=0, Total=2162 [2019-09-07 13:27:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382523 states. [2019-09-07 13:27:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382523 to 330586. [2019-09-07 13:27:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330586 states. [2019-09-07 13:27:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330586 states to 330586 states and 499504 transitions. [2019-09-07 13:27:47,649 INFO L78 Accepts]: Start accepts. Automaton has 330586 states and 499504 transitions. Word has length 354 [2019-09-07 13:27:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:27:47,650 INFO L475 AbstractCegarLoop]: Abstraction has 330586 states and 499504 transitions. [2019-09-07 13:27:47,650 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:27:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 330586 states and 499504 transitions. [2019-09-07 13:27:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2019-09-07 13:27:48,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:48,459 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:48,459 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:48,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1613073711, now seen corresponding path program 1 times [2019-09-07 13:27:48,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:48,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:48,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:48,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:48,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 193 proven. 36 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-09-07 13:27:50,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:27:50,089 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) [2019-09-07 13:27:50,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:27:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:50,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:27:50,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:27:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2019-09-07 13:27:50,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:27:50,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 13:27:50,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 13:27:50,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 13:27:50,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:27:50,597 INFO L87 Difference]: Start difference. First operand 330586 states and 499504 transitions. Second operand 10 states. [2019-09-07 13:28:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:25,380 INFO L93 Difference]: Finished difference Result 851720 states and 1438131 transitions. [2019-09-07 13:28:25,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 13:28:25,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 356 [2019-09-07 13:28:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:28,592 INFO L225 Difference]: With dead ends: 851720 [2019-09-07 13:28:28,592 INFO L226 Difference]: Without dead ends: 530947 [2019-09-07 13:28:29,536 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2019-09-07 13:28:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530947 states. [2019-09-07 13:28:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530947 to 506341. [2019-09-07 13:28:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506341 states. [2019-09-07 13:28:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506341 states to 506341 states and 720466 transitions. [2019-09-07 13:28:49,185 INFO L78 Accepts]: Start accepts. Automaton has 506341 states and 720466 transitions. Word has length 356 [2019-09-07 13:28:49,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:49,186 INFO L475 AbstractCegarLoop]: Abstraction has 506341 states and 720466 transitions. [2019-09-07 13:28:49,186 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 13:28:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 506341 states and 720466 transitions. [2019-09-07 13:28:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2019-09-07 13:28:59,639 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:59,640 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 13:28:59,640 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2092798148, now seen corresponding path program 1 times [2019-09-07 13:28:59,640 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:59,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:59,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:59,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:59,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 203 proven. 71 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:28:59,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:59,980 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) [2019-09-07 13:28:59,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:29:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:00,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:29:00,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:29:00,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:29:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (11)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:29:00,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:29:00,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2019-09-07 13:29:00,396 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:29:00,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:29:00,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:29:00,397 INFO L87 Difference]: Start difference. First operand 506341 states and 720466 transitions. Second operand 11 states. [2019-09-07 13:29:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:29:32,778 INFO L93 Difference]: Finished difference Result 1236159 states and 1815840 transitions. [2019-09-07 13:29:32,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-07 13:29:32,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 362 [2019-09-07 13:29:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:29:46,489 INFO L225 Difference]: With dead ends: 1236159 [2019-09-07 13:29:46,490 INFO L226 Difference]: Without dead ends: 743094 [2019-09-07 13:29:47,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=677, Invalid=2745, Unknown=0, NotChecked=0, Total=3422 [2019-09-07 13:29:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743094 states. [2019-09-07 13:30:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743094 to 728486. [2019-09-07 13:30:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728486 states. [2019-09-07 13:30:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728486 states to 728486 states and 1007033 transitions. [2019-09-07 13:30:29,149 INFO L78 Accepts]: Start accepts. Automaton has 728486 states and 1007033 transitions. Word has length 362 [2019-09-07 13:30:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:30:29,149 INFO L475 AbstractCegarLoop]: Abstraction has 728486 states and 1007033 transitions. [2019-09-07 13:30:29,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:30:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 728486 states and 1007033 transitions. [2019-09-07 13:30:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-09-07 13:30:30,084 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:30:30,085 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:30:30,085 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:30:30,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:30:30,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1095455267, now seen corresponding path program 1 times [2019-09-07 13:30:30,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:30:30,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:30:30,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:30:30,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:30:30,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:30:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:30:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 227 proven. 58 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 13:30:32,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:30:32,586 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) [2019-09-07 13:30:32,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:30:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:30:32,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-07 13:30:32,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:30:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-07 13:30:33,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:30:33,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 13:30:33,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:30:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:30:33,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:30:33,007 INFO L87 Difference]: Start difference. First operand 728486 states and 1007033 transitions. Second operand 12 states. [2019-09-07 13:31:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:25,435 INFO L93 Difference]: Finished difference Result 1409899 states and 2138967 transitions. [2019-09-07 13:31:25,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-09-07 13:31:25,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 364 [2019-09-07 13:31:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:30,158 INFO L225 Difference]: With dead ends: 1409899 [2019-09-07 13:31:30,158 INFO L226 Difference]: Without dead ends: 682621 [2019-09-07 13:31:32,404 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1148, Invalid=6684, Unknown=0, NotChecked=0, Total=7832 [2019-09-07 13:31:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682621 states. [2019-09-07 13:32:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682621 to 596037. [2019-09-07 13:32:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596037 states. [2019-09-07 13:32:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596037 states to 596037 states and 756966 transitions. [2019-09-07 13:32:06,391 INFO L78 Accepts]: Start accepts. Automaton has 596037 states and 756966 transitions. Word has length 364 [2019-09-07 13:32:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:06,392 INFO L475 AbstractCegarLoop]: Abstraction has 596037 states and 756966 transitions. [2019-09-07 13:32:06,392 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 13:32:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 596037 states and 756966 transitions. [2019-09-07 13:32:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-09-07 13:32:08,914 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:08,914 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:08,914 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:08,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1383254310, now seen corresponding path program 1 times [2019-09-07 13:32:08,915 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:08,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:08,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:08,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:08,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 229 proven. 4 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2019-09-07 13:32:09,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:09,126 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) [2019-09-07 13:32:09,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:32:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:09,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:32:09,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-09-07 13:32:09,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:32:09,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-07 13:32:09,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 13:32:09,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 13:32:09,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:32:09,517 INFO L87 Difference]: Start difference. First operand 596037 states and 756966 transitions. Second operand 4 states. [2019-09-07 13:32:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:29,116 INFO L93 Difference]: Finished difference Result 1102877 states and 1398092 transitions. [2019-09-07 13:32:29,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:32:29,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 383 [2019-09-07 13:32:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:31,803 INFO L225 Difference]: With dead ends: 1102877 [2019-09-07 13:32:31,803 INFO L226 Difference]: Without dead ends: 595989 [2019-09-07 13:32:32,429 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:32:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595989 states. [2019-09-07 13:32:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595989 to 595986. [2019-09-07 13:32:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595986 states. [2019-09-07 13:32:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595986 states to 595986 states and 756730 transitions. [2019-09-07 13:32:56,079 INFO L78 Accepts]: Start accepts. Automaton has 595986 states and 756730 transitions. Word has length 383 [2019-09-07 13:32:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:56,080 INFO L475 AbstractCegarLoop]: Abstraction has 595986 states and 756730 transitions. [2019-09-07 13:32:56,080 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 13:32:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 595986 states and 756730 transitions. [2019-09-07 13:32:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-09-07 13:32:56,714 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:56,714 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:32:56,715 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash 129013513, now seen corresponding path program 1 times [2019-09-07 13:32:56,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:56,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:56,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:56,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:56,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 244 proven. 75 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 13:32:57,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:57,083 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 13:32:57,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:57,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 13:32:57,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:33:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-07 13:33:05,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:33:05,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 13:33:05,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 13:33:05,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 13:33:05,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:33:05,886 INFO L87 Difference]: Start difference. First operand 595986 states and 756730 transitions. Second operand 10 states. [2019-09-07 13:33:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:33:28,786 INFO L93 Difference]: Finished difference Result 1139741 states and 1553843 transitions. [2019-09-07 13:33:28,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 13:33:28,787 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 383 [2019-09-07 13:33:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:33:32,250 INFO L225 Difference]: With dead ends: 1139741 [2019-09-07 13:33:32,251 INFO L226 Difference]: Without dead ends: 592821 [2019-09-07 13:33:33,087 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2019-09-07 13:33:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592821 states. [2019-09-07 13:34:03,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592821 to 545019. [2019-09-07 13:34:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545019 states. [2019-09-07 13:34:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545019 states to 545019 states and 666312 transitions. [2019-09-07 13:34:05,716 INFO L78 Accepts]: Start accepts. Automaton has 545019 states and 666312 transitions. Word has length 383 [2019-09-07 13:34:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:34:05,716 INFO L475 AbstractCegarLoop]: Abstraction has 545019 states and 666312 transitions. [2019-09-07 13:34:05,716 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 13:34:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 545019 states and 666312 transitions. [2019-09-07 13:34:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2019-09-07 13:34:06,196 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:34:06,197 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:06,197 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:34:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:34:06,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2053139913, now seen corresponding path program 1 times [2019-09-07 13:34:06,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:34:06,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:34:06,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:06,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:06,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 239 proven. 157 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-07 13:34:06,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:34:06,494 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) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:34:06,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:06,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:34:06,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:34:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-09-07 13:34:07,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:34:07,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:34:07,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:34:07,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:34:07,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:34:07,534 INFO L87 Difference]: Start difference. First operand 545019 states and 666312 transitions. Second operand 9 states. [2019-09-07 13:34:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:34:55,653 INFO L93 Difference]: Finished difference Result 2000084 states and 2547827 transitions. [2019-09-07 13:34:55,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 13:34:55,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 393 [2019-09-07 13:34:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:35:03,077 INFO L225 Difference]: With dead ends: 2000084 [2019-09-07 13:35:03,078 INFO L226 Difference]: Without dead ends: 1489088 [2019-09-07 13:35:05,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2019-09-07 13:35:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489088 states.