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/bitvector/s3_srvr_1_alt.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 12:52:48,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 12:52:48,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 12:52:48,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 12:52:48,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 12:52:48,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 12:52:48,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 12:52:48,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 12:52:48,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 12:52:48,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 12:52:48,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 12:52:48,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 12:52:48,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 12:52:48,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 12:52:48,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 12:52:48,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 12:52:48,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 12:52:48,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 12:52:48,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 12:52:48,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 12:52:48,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 12:52:48,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 12:52:48,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 12:52:48,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 12:52:48,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 12:52:48,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 12:52:48,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 12:52:48,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 12:52:48,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 12:52:48,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 12:52:48,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 12:52:48,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 12:52:48,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 12:52:48,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 12:52:48,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 12:52:48,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 12:52:48,525 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 12:52:48,539 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 12:52:48,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 12:52:48,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 12:52:48,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 12:52:48,541 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 12:52:48,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 12:52:48,542 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 12:52:48,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 12:52:48,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 12:52:48,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 12:52:48,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 12:52:48,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 12:52:48,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 12:52:48,543 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 12:52:48,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 12:52:48,543 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 12:52:48,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 12:52:48,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 12:52:48,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 12:52:48,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 12:52:48,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 12:52:48,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:52:48,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 12:52:48,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 12:52:48,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 12:52:48,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 12:52:48,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 12:52:48,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 12:52:48,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 12:52:48,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 12:52:48,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 12:52:48,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 12:52:48,591 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 12:52:48,591 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 12:52:48,592 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_1_alt.BV.c.cil.c [2019-09-07 12:52:48,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1ee19b8/438f2f541f4044199e6b12b0e302774b/FLAGe95da5da2 [2019-09-07 12:52:49,189 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 12:52:49,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_1_alt.BV.c.cil.c [2019-09-07 12:52:49,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1ee19b8/438f2f541f4044199e6b12b0e302774b/FLAGe95da5da2 [2019-09-07 12:52:49,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1ee19b8/438f2f541f4044199e6b12b0e302774b [2019-09-07 12:52:49,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 12:52:49,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 12:52:49,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 12:52:49,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 12:52:49,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 12:52:49,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:52:49" (1/1) ... [2019-09-07 12:52:49,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c23008b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:49, skipping insertion in model container [2019-09-07 12:52:49,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:52:49" (1/1) ... [2019-09-07 12:52:49,514 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 12:52:49,573 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 12:52:49,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:52:49,960 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 12:52:50,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:52:50,065 INFO L192 MainTranslator]: Completed translation [2019-09-07 12:52:50,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50 WrapperNode [2019-09-07 12:52:50,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 12:52:50,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 12:52:50,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 12:52:50,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 12:52:50,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (1/1) ... [2019-09-07 12:52:50,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 12:52:50,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 12:52:50,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 12:52:50,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 12:52:50,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (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 12:52:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 12:52:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 12:52:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2019-09-07 12:52:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 12:52:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-07 12:52:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 12:52:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-09-07 12:52:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-09-07 12:52:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 12:52:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2019-09-07 12:52:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 12:52:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 12:52:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 12:52:50,382 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-09-07 12:52:50,912 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-09-07 12:52:50,913 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-09-07 12:52:50,915 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 12:52:50,916 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 12:52:50,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:52:50 BoogieIcfgContainer [2019-09-07 12:52:50,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 12:52:50,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 12:52:50,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 12:52:50,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 12:52:50,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:52:49" (1/3) ... [2019-09-07 12:52:50,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac8b9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:52:50, skipping insertion in model container [2019-09-07 12:52:50,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:50" (2/3) ... [2019-09-07 12:52:50,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac8b9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:52:50, skipping insertion in model container [2019-09-07 12:52:50,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:52:50" (3/3) ... [2019-09-07 12:52:50,927 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1_alt.BV.c.cil.c [2019-09-07 12:52:50,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 12:52:50,945 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 12:52:50,962 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 12:52:50,994 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 12:52:50,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 12:52:50,996 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 12:52:50,996 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 12:52:50,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 12:52:50,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 12:52:50,996 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 12:52:50,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 12:52:50,997 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 12:52:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2019-09-07 12:52:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-07 12:52:51,029 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:51,030 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] [2019-09-07 12:52:51,033 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:51,037 INFO L82 PathProgramCache]: Analyzing trace with hash -948982516, now seen corresponding path program 1 times [2019-09-07 12:52:51,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:51,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:51,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:51,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:51,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:51,304 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 12:52:51,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:51,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 12:52:51,312 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 12:52:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 12:52:51,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 12:52:51,333 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 5 states. [2019-09-07 12:52:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:51,835 INFO L93 Difference]: Finished difference Result 337 states and 575 transitions. [2019-09-07 12:52:51,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:52:51,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2019-09-07 12:52:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:51,852 INFO L225 Difference]: With dead ends: 337 [2019-09-07 12:52:51,853 INFO L226 Difference]: Without dead ends: 179 [2019-09-07 12:52:51,857 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:52:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-09-07 12:52:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2019-09-07 12:52:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-09-07 12:52:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 279 transitions. [2019-09-07 12:52:51,917 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 279 transitions. Word has length 49 [2019-09-07 12:52:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:51,918 INFO L475 AbstractCegarLoop]: Abstraction has 173 states and 279 transitions. [2019-09-07 12:52:51,918 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 12:52:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 279 transitions. [2019-09-07 12:52:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-07 12:52:51,921 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:51,921 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] [2019-09-07 12:52:51,922 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash 639336974, now seen corresponding path program 1 times [2019-09-07 12:52:51,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:51,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:51,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:51,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:51,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:52,071 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 12:52:52,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:52,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 12:52:52,073 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 12:52:52,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 12:52:52,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 12:52:52,074 INFO L87 Difference]: Start difference. First operand 173 states and 279 transitions. Second operand 5 states. [2019-09-07 12:52:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:52,428 INFO L93 Difference]: Finished difference Result 340 states and 549 transitions. [2019-09-07 12:52:52,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:52:52,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2019-09-07 12:52:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:52,430 INFO L225 Difference]: With dead ends: 340 [2019-09-07 12:52:52,431 INFO L226 Difference]: Without dead ends: 178 [2019-09-07 12:52:52,436 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:52:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-09-07 12:52:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2019-09-07 12:52:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-09-07 12:52:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 277 transitions. [2019-09-07 12:52:52,470 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 277 transitions. Word has length 50 [2019-09-07 12:52:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:52,471 INFO L475 AbstractCegarLoop]: Abstraction has 172 states and 277 transitions. [2019-09-07 12:52:52,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 12:52:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 277 transitions. [2019-09-07 12:52:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-07 12:52:52,477 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:52,477 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] [2019-09-07 12:52:52,478 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:52,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1713661290, now seen corresponding path program 1 times [2019-09-07 12:52:52,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:52,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:52,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:52,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:52,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:52,605 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 12:52:52,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:52,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 12:52:52,606 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 12:52:52,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 12:52:52,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 12:52:52,607 INFO L87 Difference]: Start difference. First operand 172 states and 277 transitions. Second operand 5 states. [2019-09-07 12:52:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:52,868 INFO L93 Difference]: Finished difference Result 362 states and 595 transitions. [2019-09-07 12:52:52,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:52:52,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-07 12:52:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:52,870 INFO L225 Difference]: With dead ends: 362 [2019-09-07 12:52:52,871 INFO L226 Difference]: Without dead ends: 203 [2019-09-07 12:52:52,872 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:52:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-09-07 12:52:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2019-09-07 12:52:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2019-09-07 12:52:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 334 transitions. [2019-09-07 12:52:52,897 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 334 transitions. Word has length 78 [2019-09-07 12:52:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:52,898 INFO L475 AbstractCegarLoop]: Abstraction has 203 states and 334 transitions. [2019-09-07 12:52:52,898 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 12:52:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 334 transitions. [2019-09-07 12:52:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-07 12:52:52,904 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:52,904 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, 1, 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 12:52:52,904 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:52,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1660004957, now seen corresponding path program 1 times [2019-09-07 12:52:52,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:52,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:52,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:52,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:52,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:52,927 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:52,927 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:52,927 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:52,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:53,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 12:52:53,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:52:53,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:53,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:53,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:53,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:53,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,068 INFO L87 Difference]: Start difference. First operand 203 states and 334 transitions. Second operand 3 states. [2019-09-07 12:52:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:53,112 INFO L93 Difference]: Finished difference Result 581 states and 967 transitions. [2019-09-07 12:52:53,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:53,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-09-07 12:52:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:53,115 INFO L225 Difference]: With dead ends: 581 [2019-09-07 12:52:53,115 INFO L226 Difference]: Without dead ends: 391 [2019-09-07 12:52:53,117 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-09-07 12:52:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2019-09-07 12:52:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2019-09-07 12:52:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 645 transitions. [2019-09-07 12:52:53,137 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 645 transitions. Word has length 89 [2019-09-07 12:52:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:53,138 INFO L475 AbstractCegarLoop]: Abstraction has 391 states and 645 transitions. [2019-09-07 12:52:53,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 645 transitions. [2019-09-07 12:52:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-07 12:52:53,141 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:53,141 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 12:52:53,142 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:53,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1855692930, now seen corresponding path program 1 times [2019-09-07 12:52:53,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:53,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:53,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:53,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:53,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 12:52:53,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:53,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:53,219 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,220 INFO L87 Difference]: Start difference. First operand 391 states and 645 transitions. Second operand 3 states. [2019-09-07 12:52:53,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:53,376 INFO L93 Difference]: Finished difference Result 819 states and 1360 transitions. [2019-09-07 12:52:53,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:53,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-09-07 12:52:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:53,382 INFO L225 Difference]: With dead ends: 819 [2019-09-07 12:52:53,382 INFO L226 Difference]: Without dead ends: 441 [2019-09-07 12:52:53,383 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2019-09-07 12:52:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 433. [2019-09-07 12:52:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-09-07 12:52:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 697 transitions. [2019-09-07 12:52:53,409 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 697 transitions. Word has length 105 [2019-09-07 12:52:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:53,409 INFO L475 AbstractCegarLoop]: Abstraction has 433 states and 697 transitions. [2019-09-07 12:52:53,410 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 697 transitions. [2019-09-07 12:52:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-07 12:52:53,413 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:53,413 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2019-09-07 12:52:53,413 INFO L418 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash 320501393, now seen corresponding path program 1 times [2019-09-07 12:52:53,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:53,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:53,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:53,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:53,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:53,446 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:53,447 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:53,447 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:53,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:53,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 12:52:53,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Exception during sending of exit command (exit): Stream closed [2019-09-07 12:52:53,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:53,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:53,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,576 INFO L87 Difference]: Start difference. First operand 433 states and 697 transitions. Second operand 3 states. [2019-09-07 12:52:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:53,628 INFO L93 Difference]: Finished difference Result 644 states and 1040 transitions. [2019-09-07 12:52:53,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:53,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-09-07 12:52:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:53,635 INFO L225 Difference]: With dead ends: 644 [2019-09-07 12:52:53,636 INFO L226 Difference]: Without dead ends: 642 [2019-09-07 12:52:53,636 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-09-07 12:52:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-09-07 12:52:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-09-07 12:52:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1037 transitions. [2019-09-07 12:52:53,673 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1037 transitions. Word has length 126 [2019-09-07 12:52:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:53,674 INFO L475 AbstractCegarLoop]: Abstraction has 642 states and 1037 transitions. [2019-09-07 12:52:53,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1037 transitions. [2019-09-07 12:52:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-07 12:52:53,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:53,688 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 12:52:53,688 INFO L418 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:53,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:53,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1193699073, now seen corresponding path program 1 times [2019-09-07 12:52:53,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:53,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:53,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:53,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:53,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-09-07 12:52:53,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:53,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:53,804 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:53,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,805 INFO L87 Difference]: Start difference. First operand 642 states and 1037 transitions. Second operand 3 states. [2019-09-07 12:52:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:53,988 INFO L93 Difference]: Finished difference Result 1427 states and 2327 transitions. [2019-09-07 12:52:53,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:53,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-09-07 12:52:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:53,995 INFO L225 Difference]: With dead ends: 1427 [2019-09-07 12:52:53,995 INFO L226 Difference]: Without dead ends: 798 [2019-09-07 12:52:53,997 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-09-07 12:52:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 765. [2019-09-07 12:52:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-09-07 12:52:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1184 transitions. [2019-09-07 12:52:54,030 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1184 transitions. Word has length 164 [2019-09-07 12:52:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:54,031 INFO L475 AbstractCegarLoop]: Abstraction has 765 states and 1184 transitions. [2019-09-07 12:52:54,031 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1184 transitions. [2019-09-07 12:52:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-07 12:52:54,034 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:54,034 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 12:52:54,035 INFO L418 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:54,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2008633021, now seen corresponding path program 1 times [2019-09-07 12:52:54,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:54,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:54,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:54,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-07 12:52:54,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:54,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:54,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:54,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:54,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:54,129 INFO L87 Difference]: Start difference. First operand 765 states and 1184 transitions. Second operand 3 states. [2019-09-07 12:52:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:54,273 INFO L93 Difference]: Finished difference Result 1595 states and 2489 transitions. [2019-09-07 12:52:54,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:54,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-09-07 12:52:54,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:54,279 INFO L225 Difference]: With dead ends: 1595 [2019-09-07 12:52:54,279 INFO L226 Difference]: Without dead ends: 843 [2019-09-07 12:52:54,281 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2019-09-07 12:52:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 834. [2019-09-07 12:52:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2019-09-07 12:52:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1268 transitions. [2019-09-07 12:52:54,307 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1268 transitions. Word has length 164 [2019-09-07 12:52:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:54,308 INFO L475 AbstractCegarLoop]: Abstraction has 834 states and 1268 transitions. [2019-09-07 12:52:54,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1268 transitions. [2019-09-07 12:52:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-09-07 12:52:54,311 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:54,312 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:54,312 INFO L418 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1598734818, now seen corresponding path program 1 times [2019-09-07 12:52:54,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:54,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:54,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 12:52:54,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:54,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:54,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:54,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:54,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:54,364 INFO L87 Difference]: Start difference. First operand 834 states and 1268 transitions. Second operand 3 states. [2019-09-07 12:52:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:54,540 INFO L93 Difference]: Finished difference Result 1728 states and 2633 transitions. [2019-09-07 12:52:54,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:54,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-09-07 12:52:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:54,545 INFO L225 Difference]: With dead ends: 1728 [2019-09-07 12:52:54,546 INFO L226 Difference]: Without dead ends: 904 [2019-09-07 12:52:54,548 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2019-09-07 12:52:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 889. [2019-09-07 12:52:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2019-09-07 12:52:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1329 transitions. [2019-09-07 12:52:54,578 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1329 transitions. Word has length 177 [2019-09-07 12:52:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:54,578 INFO L475 AbstractCegarLoop]: Abstraction has 889 states and 1329 transitions. [2019-09-07 12:52:54,578 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1329 transitions. [2019-09-07 12:52:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-07 12:52:54,582 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:54,583 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:54,583 INFO L418 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1271500523, now seen corresponding path program 1 times [2019-09-07 12:52:54,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:54,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:54,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:54,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-09-07 12:52:54,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:54,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:54,698 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:54,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:54,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:54,699 INFO L87 Difference]: Start difference. First operand 889 states and 1329 transitions. Second operand 3 states. [2019-09-07 12:52:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:54,874 INFO L93 Difference]: Finished difference Result 1842 states and 2766 transitions. [2019-09-07 12:52:54,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:54,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-09-07 12:52:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:54,882 INFO L225 Difference]: With dead ends: 1842 [2019-09-07 12:52:54,882 INFO L226 Difference]: Without dead ends: 1000 [2019-09-07 12:52:54,885 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2019-09-07 12:52:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 964. [2019-09-07 12:52:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-09-07 12:52:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1419 transitions. [2019-09-07 12:52:54,916 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1419 transitions. Word has length 184 [2019-09-07 12:52:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:54,916 INFO L475 AbstractCegarLoop]: Abstraction has 964 states and 1419 transitions. [2019-09-07 12:52:54,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1419 transitions. [2019-09-07 12:52:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-09-07 12:52:54,921 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:54,921 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2019-09-07 12:52:54,921 INFO L418 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:54,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1242312534, now seen corresponding path program 1 times [2019-09-07 12:52:54,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:54,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:54,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:54,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:54,935 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:54,936 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:54,936 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:54,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:55,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 12:52:55,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 12:52:55,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:55,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:55,069 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:55,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:55,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:55,070 INFO L87 Difference]: Start difference. First operand 964 states and 1419 transitions. Second operand 3 states. [2019-09-07 12:52:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:55,264 INFO L93 Difference]: Finished difference Result 2001 states and 2970 transitions. [2019-09-07 12:52:55,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:55,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-09-07 12:52:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:55,270 INFO L225 Difference]: With dead ends: 2001 [2019-09-07 12:52:55,270 INFO L226 Difference]: Without dead ends: 958 [2019-09-07 12:52:55,273 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2019-09-07 12:52:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2019-09-07 12:52:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2019-09-07 12:52:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1400 transitions. [2019-09-07 12:52:55,302 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1400 transitions. Word has length 204 [2019-09-07 12:52:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:55,302 INFO L475 AbstractCegarLoop]: Abstraction has 958 states and 1400 transitions. [2019-09-07 12:52:55,303 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1400 transitions. [2019-09-07 12:52:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-09-07 12:52:55,307 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:55,307 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2019-09-07 12:52:55,307 INFO L418 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1485896812, now seen corresponding path program 1 times [2019-09-07 12:52:55,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:55,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:55,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:55,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:55,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:55,319 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:55,319 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:55,319 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 (exit command is (exit), workingDir is null) [2019-09-07 12:52:55,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:55,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 12:52:55,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:52:55,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:55,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:55,488 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:55,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:55,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:55,488 INFO L87 Difference]: Start difference. First operand 958 states and 1400 transitions. Second operand 3 states. [2019-09-07 12:52:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:55,559 INFO L93 Difference]: Finished difference Result 2702 states and 3947 transitions. [2019-09-07 12:52:55,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:55,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-09-07 12:52:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:55,567 INFO L225 Difference]: With dead ends: 2702 [2019-09-07 12:52:55,567 INFO L226 Difference]: Without dead ends: 1231 [2019-09-07 12:52:55,571 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2019-09-07 12:52:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1227. [2019-09-07 12:52:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2019-09-07 12:52:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1789 transitions. [2019-09-07 12:52:55,611 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1789 transitions. Word has length 204 [2019-09-07 12:52:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:55,612 INFO L475 AbstractCegarLoop]: Abstraction has 1227 states and 1789 transitions. [2019-09-07 12:52:55,612 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1789 transitions. [2019-09-07 12:52:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-09-07 12:52:55,616 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:55,616 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 12:52:55,617 INFO L418 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash -886579779, now seen corresponding path program 1 times [2019-09-07 12:52:55,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:55,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:55,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:55,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:55,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-09-07 12:52:55,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:55,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:55,697 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:55,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:55,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:55,698 INFO L87 Difference]: Start difference. First operand 1227 states and 1789 transitions. Second operand 3 states. [2019-09-07 12:52:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:55,877 INFO L93 Difference]: Finished difference Result 2543 states and 3730 transitions. [2019-09-07 12:52:55,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:55,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2019-09-07 12:52:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:55,885 INFO L225 Difference]: With dead ends: 2543 [2019-09-07 12:52:55,885 INFO L226 Difference]: Without dead ends: 1363 [2019-09-07 12:52:55,888 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-09-07 12:52:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1335. [2019-09-07 12:52:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2019-09-07 12:52:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1917 transitions. [2019-09-07 12:52:55,926 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1917 transitions. Word has length 210 [2019-09-07 12:52:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:55,927 INFO L475 AbstractCegarLoop]: Abstraction has 1335 states and 1917 transitions. [2019-09-07 12:52:55,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1917 transitions. [2019-09-07 12:52:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-09-07 12:52:55,932 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:55,932 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:55,932 INFO L418 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:55,933 INFO L82 PathProgramCache]: Analyzing trace with hash -251384119, now seen corresponding path program 1 times [2019-09-07 12:52:55,933 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:55,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:55,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:55,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:55,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:55,948 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:55,949 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:55,949 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 (exit command is (exit), workingDir is null) [2019-09-07 12:52:55,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:56,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 12:52:56,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-09-07 12:52:56,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:56,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:56,130 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:56,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:56,131 INFO L87 Difference]: Start difference. First operand 1335 states and 1917 transitions. Second operand 3 states. [2019-09-07 12:52:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:56,195 INFO L93 Difference]: Finished difference Result 2623 states and 3757 transitions. [2019-09-07 12:52:56,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:56,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-09-07 12:52:56,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:56,204 INFO L225 Difference]: With dead ends: 2623 [2019-09-07 12:52:56,204 INFO L226 Difference]: Without dead ends: 1664 [2019-09-07 12:52:56,208 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2019-09-07 12:52:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2019-09-07 12:52:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2019-09-07 12:52:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2385 transitions. [2019-09-07 12:52:56,259 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2385 transitions. Word has length 233 [2019-09-07 12:52:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:56,260 INFO L475 AbstractCegarLoop]: Abstraction has 1664 states and 2385 transitions. [2019-09-07 12:52:56,260 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2385 transitions. [2019-09-07 12:52:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-09-07 12:52:56,264 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:56,264 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:56,265 INFO L418 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1757853408, now seen corresponding path program 1 times [2019-09-07 12:52:56,265 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:56,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:56,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:56,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:56,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:56,283 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:56,284 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:56,284 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:56,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:56,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 12:52:56,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2019-09-07 12:52:56,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:56,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:56,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:56,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:56,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:56,436 INFO L87 Difference]: Start difference. First operand 1664 states and 2385 transitions. Second operand 3 states. [2019-09-07 12:52:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:56,610 INFO L93 Difference]: Finished difference Result 3436 states and 4950 transitions. [2019-09-07 12:52:56,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:56,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2019-09-07 12:52:56,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:56,619 INFO L225 Difference]: With dead ends: 3436 [2019-09-07 12:52:56,620 INFO L226 Difference]: Without dead ends: 1819 [2019-09-07 12:52:56,625 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2019-09-07 12:52:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1809. [2019-09-07 12:52:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2019-09-07 12:52:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2555 transitions. [2019-09-07 12:52:56,672 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2555 transitions. Word has length 273 [2019-09-07 12:52:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:56,673 INFO L475 AbstractCegarLoop]: Abstraction has 1809 states and 2555 transitions. [2019-09-07 12:52:56,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2555 transitions. [2019-09-07 12:52:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2019-09-07 12:52:56,701 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:56,701 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:56,701 INFO L418 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1996735632, now seen corresponding path program 1 times [2019-09-07 12:52:56,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:56,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:56,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:56,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:56,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:56,717 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:56,717 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:56,717 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:56,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:56,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 12:52:56,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2019-09-07 12:52:56,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:56,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:56,858 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:56,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:56,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:56,859 INFO L87 Difference]: Start difference. First operand 1809 states and 2555 transitions. Second operand 3 states. [2019-09-07 12:52:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:57,037 INFO L93 Difference]: Finished difference Result 3571 states and 5030 transitions. [2019-09-07 12:52:57,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:57,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 277 [2019-09-07 12:52:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:57,046 INFO L225 Difference]: With dead ends: 3571 [2019-09-07 12:52:57,046 INFO L226 Difference]: Without dead ends: 1809 [2019-09-07 12:52:57,050 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2019-09-07 12:52:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2019-09-07 12:52:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2019-09-07 12:52:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2465 transitions. [2019-09-07 12:52:57,096 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2465 transitions. Word has length 277 [2019-09-07 12:52:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:57,096 INFO L475 AbstractCegarLoop]: Abstraction has 1809 states and 2465 transitions. [2019-09-07 12:52:57,096 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2465 transitions. [2019-09-07 12:52:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-09-07 12:52:57,101 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:57,102 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2019-09-07 12:52:57,102 INFO L418 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1207257382, now seen corresponding path program 1 times [2019-09-07 12:52:57,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:57,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:57,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:57,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:57,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:57,118 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:57,119 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:57,119 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 (exit command is (exit), workingDir is null) [2019-09-07 12:52:57,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:57,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 12:52:57,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 616 proven. 26 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2019-09-07 12:52:57,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 12:52:57,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-09-07 12:52:57,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 12:52:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 12:52:57,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 12:52:57,315 INFO L87 Difference]: Start difference. First operand 1809 states and 2465 transitions. Second operand 4 states. [2019-09-07 12:52:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:57,693 INFO L93 Difference]: Finished difference Result 4911 states and 6860 transitions. [2019-09-07 12:52:57,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:52:57,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2019-09-07 12:52:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:57,708 INFO L225 Difference]: With dead ends: 4911 [2019-09-07 12:52:57,708 INFO L226 Difference]: Without dead ends: 3038 [2019-09-07 12:52:57,713 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-07 12:52:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2019-09-07 12:52:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2561. [2019-09-07 12:52:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2561 states. [2019-09-07 12:52:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3648 transitions. [2019-09-07 12:52:57,784 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3648 transitions. Word has length 306 [2019-09-07 12:52:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:57,785 INFO L475 AbstractCegarLoop]: Abstraction has 2561 states and 3648 transitions. [2019-09-07 12:52:57,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 12:52:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3648 transitions. [2019-09-07 12:52:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-09-07 12:52:57,791 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:57,791 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2019-09-07 12:52:57,792 INFO L418 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash 386048720, now seen corresponding path program 1 times [2019-09-07 12:52:57,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:57,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:57,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:57,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:57,812 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:57,812 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:57,812 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 (exit command is (exit), workingDir is null) [2019-09-07 12:52:57,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:57,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 12:52:57,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2019-09-07 12:52:58,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:58,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:58,020 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:58,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:58,022 INFO L87 Difference]: Start difference. First operand 2561 states and 3648 transitions. Second operand 3 states. [2019-09-07 12:52:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:58,209 INFO L93 Difference]: Finished difference Result 5327 states and 7643 transitions. [2019-09-07 12:52:58,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:58,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 337 [2019-09-07 12:52:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:58,223 INFO L225 Difference]: With dead ends: 5327 [2019-09-07 12:52:58,223 INFO L226 Difference]: Without dead ends: 2813 [2019-09-07 12:52:58,228 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2019-09-07 12:52:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2799. [2019-09-07 12:52:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2019-09-07 12:52:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3921 transitions. [2019-09-07 12:52:58,294 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3921 transitions. Word has length 337 [2019-09-07 12:52:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:58,295 INFO L475 AbstractCegarLoop]: Abstraction has 2799 states and 3921 transitions. [2019-09-07 12:52:58,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3921 transitions. [2019-09-07 12:52:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2019-09-07 12:52:58,301 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:58,301 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:58,302 INFO L418 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1208010042, now seen corresponding path program 1 times [2019-09-07 12:52:58,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:58,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:58,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:58,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:58,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 769 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2019-09-07 12:52:58,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:58,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:58,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:58,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:58,420 INFO L87 Difference]: Start difference. First operand 2799 states and 3921 transitions. Second operand 3 states. [2019-09-07 12:52:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:58,593 INFO L93 Difference]: Finished difference Result 5817 states and 8217 transitions. [2019-09-07 12:52:58,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:58,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 368 [2019-09-07 12:52:58,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:58,608 INFO L225 Difference]: With dead ends: 5817 [2019-09-07 12:52:58,608 INFO L226 Difference]: Without dead ends: 3065 [2019-09-07 12:52:58,614 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2019-09-07 12:52:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3051. [2019-09-07 12:52:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3051 states. [2019-09-07 12:52:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4208 transitions. [2019-09-07 12:52:58,705 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4208 transitions. Word has length 368 [2019-09-07 12:52:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:58,706 INFO L475 AbstractCegarLoop]: Abstraction has 3051 states and 4208 transitions. [2019-09-07 12:52:58,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4208 transitions. [2019-09-07 12:52:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2019-09-07 12:52:58,718 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:58,719 INFO L399 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 7, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2019-09-07 12:52:58,719 INFO L418 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:58,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:58,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1264834741, now seen corresponding path program 1 times [2019-09-07 12:52:58,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:58,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:58,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:58,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:58,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:58,747 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:58,747 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:58,747 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 (exit command is (exit), workingDir is null) [2019-09-07 12:52:58,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:58,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 12:52:58,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:52:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 899 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2019-09-07 12:52:59,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:59,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:52:59,029 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:52:59,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:52:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:59,030 INFO L87 Difference]: Start difference. First operand 3051 states and 4208 transitions. Second operand 3 states. [2019-09-07 12:52:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:59,206 INFO L93 Difference]: Finished difference Result 6072 states and 8350 transitions. [2019-09-07 12:52:59,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:52:59,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 401 [2019-09-07 12:52:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:59,219 INFO L225 Difference]: With dead ends: 6072 [2019-09-07 12:52:59,219 INFO L226 Difference]: Without dead ends: 2842 [2019-09-07 12:52:59,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:52:59,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2019-09-07 12:52:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2822. [2019-09-07 12:52:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2019-09-07 12:52:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3768 transitions. [2019-09-07 12:52:59,286 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3768 transitions. Word has length 401 [2019-09-07 12:52:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:59,286 INFO L475 AbstractCegarLoop]: Abstraction has 2822 states and 3768 transitions. [2019-09-07 12:52:59,287 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:52:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3768 transitions. [2019-09-07 12:52:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2019-09-07 12:52:59,293 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:59,294 INFO L399 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2019-09-07 12:52:59,294 INFO L418 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1986402269, now seen corresponding path program 1 times [2019-09-07 12:52:59,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:59,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:59,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:59,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:59,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:59,315 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:52:59,315 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:52:59,315 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:52:59,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:59,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 12:52:59,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:53:14,377 WARN L188 SmtUtils]: Spent 14.88 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 12:53:14,543 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 12:53:14,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,652 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:14,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:53:16,938 WARN L188 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2019-09-07 12:53:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 980 proven. 132 refuted. 34 times theorem prover too weak. 857 trivial. 0 not checked. [2019-09-07 12:53:17,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 12:53:17,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 12:53:17,727 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 12:53:17,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 12:53:17,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2019-09-07 12:53:17,728 INFO L87 Difference]: Start difference. First operand 2822 states and 3768 transitions. Second operand 7 states. [2019-09-07 12:54:22,798 WARN L188 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 12:54:23,694 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-07 12:54:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:25,754 INFO L93 Difference]: Finished difference Result 7556 states and 10109 transitions. [2019-09-07 12:54:25,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 12:54:25,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2019-09-07 12:54:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:25,774 INFO L225 Difference]: With dead ends: 7556 [2019-09-07 12:54:25,774 INFO L226 Difference]: Without dead ends: 4341 [2019-09-07 12:54:25,780 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=30, Invalid=57, Unknown=3, NotChecked=0, Total=90 [2019-09-07 12:54:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2019-09-07 12:54:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 2910. [2019-09-07 12:54:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2019-09-07 12:54:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 3921 transitions. [2019-09-07 12:54:25,882 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 3921 transitions. Word has length 439 [2019-09-07 12:54:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:25,883 INFO L475 AbstractCegarLoop]: Abstraction has 2910 states and 3921 transitions. [2019-09-07 12:54:25,883 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 12:54:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 3921 transitions. [2019-09-07 12:54:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2019-09-07 12:54:25,893 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:25,894 INFO L399 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:25,894 INFO L418 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:25,895 INFO L82 PathProgramCache]: Analyzing trace with hash -464293309, now seen corresponding path program 1 times [2019-09-07 12:54:25,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:25,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:25,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:25,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:25,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:25,920 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:54:25,921 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:54:25,921 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 (exit command is (exit), workingDir is null) [2019-09-07 12:54:25,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:54:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:26,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 12:54:26,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:54:42,501 WARN L188 SmtUtils]: Spent 16.44 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 12:54:42,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,652 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:42,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:54:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 978 proven. 136 refuted. 35 times theorem prover too weak. 857 trivial. 0 not checked. [2019-09-07 12:54:43,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 12:54:43,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 12:54:43,239 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 12:54:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 12:54:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2019-09-07 12:54:43,240 INFO L87 Difference]: Start difference. First operand 2910 states and 3921 transitions. Second operand 7 states. [2019-09-07 12:55:52,115 WARN L188 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 12:55:52,790 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-07 12:55:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:55:53,289 INFO L93 Difference]: Finished difference Result 7579 states and 10153 transitions. [2019-09-07 12:55:53,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 12:55:53,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2019-09-07 12:55:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:55:53,302 INFO L225 Difference]: With dead ends: 7579 [2019-09-07 12:55:53,302 INFO L226 Difference]: Without dead ends: 4321 [2019-09-07 12:55:53,308 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=30, Invalid=59, Unknown=1, NotChecked=0, Total=90 [2019-09-07 12:55:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2019-09-07 12:55:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 2911. [2019-09-07 12:55:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2911 states. [2019-09-07 12:55:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3918 transitions. [2019-09-07 12:55:53,382 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3918 transitions. Word has length 440 [2019-09-07 12:55:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:55:53,382 INFO L475 AbstractCegarLoop]: Abstraction has 2911 states and 3918 transitions. [2019-09-07 12:55:53,382 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 12:55:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3918 transitions. [2019-09-07 12:55:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2019-09-07 12:55:53,390 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:55:53,390 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 9, 8, 8, 7, 7, 5, 5, 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] [2019-09-07 12:55:53,391 INFO L418 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:55:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:55:53,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1954956208, now seen corresponding path program 2 times [2019-09-07 12:55:53,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:55:53,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:55:53,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:55:53,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:55:53,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:55:53,411 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:55:53,412 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:55:53,412 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:55:53,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 12:55:53,534 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:55:53,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:55:53,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 12:55:53,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:56:16,415 WARN L188 SmtUtils]: Spent 22.85 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 12:56:16,561 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 12:56:16,750 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-07 12:56:16,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,769 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,770 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:16,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:56:18,912 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2019-09-07 12:56:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 1252 proven. 219 refuted. 32 times theorem prover too weak. 857 trivial. 0 not checked. [2019-09-07 12:56:19,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 12:56:19,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 12:56:19,459 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 12:56:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 12:56:19,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2019-09-07 12:56:19,460 INFO L87 Difference]: Start difference. First operand 2911 states and 3918 transitions. Second operand 7 states. [2019-09-07 12:57:21,200 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 12:57:36,267 WARN L188 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-07 12:57:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:57:43,491 INFO L93 Difference]: Finished difference Result 7703 states and 10273 transitions. [2019-09-07 12:57:43,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 12:57:43,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 472 [2019-09-07 12:57:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:57:43,501 INFO L225 Difference]: With dead ends: 7703 [2019-09-07 12:57:43,501 INFO L226 Difference]: Without dead ends: 4259 [2019-09-07 12:57:43,507 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 468 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=30, Invalid=57, Unknown=3, NotChecked=0, Total=90 [2019-09-07 12:57:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2019-09-07 12:57:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 2911. [2019-09-07 12:57:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2911 states. [2019-09-07 12:57:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3913 transitions. [2019-09-07 12:57:43,594 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3913 transitions. Word has length 472 [2019-09-07 12:57:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:57:43,595 INFO L475 AbstractCegarLoop]: Abstraction has 2911 states and 3913 transitions. [2019-09-07 12:57:43,595 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 12:57:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3913 transitions. [2019-09-07 12:57:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2019-09-07 12:57:43,602 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:57:43,602 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 9, 8, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:57:43,602 INFO L418 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:57:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:57:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1615592086, now seen corresponding path program 1 times [2019-09-07 12:57:43,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:57:43,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:57:43,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:57:43,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:57:43,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:57:43,622 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:57:43,622 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:57:43,622 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:57:43,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:57:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:57:43,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 12:57:43,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:58:02,342 WARN L188 SmtUtils]: Spent 18.56 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 12:58:02,506 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 12:58:02,622 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-07 12:58:02,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:02,652 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:58:06,161 WARN L188 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 49 DAG size of output: 15 [2019-09-07 12:58:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2365 backedges. 1250 proven. 258 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2019-09-07 12:58:06,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 12:58:06,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 12:58:06,702 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 12:58:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 12:58:06,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 12:58:06,703 INFO L87 Difference]: Start difference. First operand 2911 states and 3913 transitions. Second operand 7 states. [2019-09-07 12:59:08,291 WARN L188 SmtUtils]: Spent 6.43 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 12:59:08,867 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-07 12:59:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:59:19,514 INFO L93 Difference]: Finished difference Result 7756 states and 10326 transitions. [2019-09-07 12:59:19,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 12:59:19,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 473 [2019-09-07 12:59:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:59:19,526 INFO L225 Difference]: With dead ends: 7756 [2019-09-07 12:59:19,526 INFO L226 Difference]: Without dead ends: 4307 [2019-09-07 12:59:19,532 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 469 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-07 12:59:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2019-09-07 12:59:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 2911. [2019-09-07 12:59:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2911 states. [2019-09-07 12:59:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3908 transitions. [2019-09-07 12:59:19,618 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3908 transitions. Word has length 473 [2019-09-07 12:59:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:59:19,618 INFO L475 AbstractCegarLoop]: Abstraction has 2911 states and 3908 transitions. [2019-09-07 12:59:19,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 12:59:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3908 transitions. [2019-09-07 12:59:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2019-09-07 12:59:19,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:59:19,627 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 10, 9, 9, 7, 7, 5, 5, 3, 3, 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] [2019-09-07 12:59:19,628 INFO L418 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:59:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:59:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash 904509122, now seen corresponding path program 3 times [2019-09-07 12:59:19,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:59:19,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:59:19,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:59:19,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:59:19,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:59:19,664 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 12:59:19,664 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 12:59:19,664 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-07 12:59:19,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 12:59:21,789 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-09-07 12:59:21,789 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:59:21,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 12:59:21,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:00:06,843 WARN L188 SmtUtils]: Spent 44.96 s on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-09-07 13:00:09,063 WARN L188 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2019-09-07 13:00:11,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:11,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:00:15,589 WARN L188 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2019-09-07 13:00:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2734 backedges. 1293 proven. 553 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2019-09-07 13:00:16,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:00:16,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-07 13:00:16,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:00:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:00:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=35, Unknown=2, NotChecked=0, Total=56 [2019-09-07 13:00:16,275 INFO L87 Difference]: Start difference. First operand 2911 states and 3908 transitions. Second operand 8 states. [2019-09-07 13:00:27,720 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ssl3_accept_~ag_X~0 8672) (let ((.cse1 (* 8672 c_ssl3_accept_~ag_Y~0))) (let ((.cse0 (div .cse1 c_ssl3_accept_~ag_Z~0)) (.cse2 (= 0 (mod .cse1 c_ssl3_accept_~ag_Z~0)))) (or (and (= c_ssl3_accept_~s__state~0 .cse0) (or (<= 0 .cse1) .cse2)) (and (or (and (= .cse0 (+ c_ssl3_accept_~s__state~0 1)) (< c_ssl3_accept_~ag_Z~0 0)) (and (= (+ .cse0 1) c_ssl3_accept_~s__state~0) (<= 0 c_ssl3_accept_~ag_Z~0))) (not .cse2) (< .cse1 0))))) (not (= c_ssl3_accept_~ag_Z~0 0))) is different from false [2019-09-07 13:02:12,712 WARN L188 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2019-09-07 13:02:21,221 WARN L188 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-09-07 13:02:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:02:21,406 INFO L93 Difference]: Finished difference Result 7407 states and 9855 transitions. [2019-09-07 13:02:21,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 13:02:21,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 503 [2019-09-07 13:02:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:02:21,415 INFO L225 Difference]: With dead ends: 7407 [2019-09-07 13:02:21,415 INFO L226 Difference]: Without dead ends: 3373 [2019-09-07 13:02:21,422 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=4, NotChecked=18, Total=132 [2019-09-07 13:02:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2019-09-07 13:02:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3106. [2019-09-07 13:02:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2019-09-07 13:02:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4246 transitions. [2019-09-07 13:02:21,505 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4246 transitions. Word has length 503 [2019-09-07 13:02:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:02:21,506 INFO L475 AbstractCegarLoop]: Abstraction has 3106 states and 4246 transitions. [2019-09-07 13:02:21,506 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:02:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4246 transitions. [2019-09-07 13:02:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2019-09-07 13:02:21,514 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:02:21,515 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 10, 9, 9, 8, 7, 5, 5, 3, 3, 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] [2019-09-07 13:02:21,515 INFO L418 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:02:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:02:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash -277941656, now seen corresponding path program 1 times [2019-09-07 13:02:21,516 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:02:21,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:02:21,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:02:21,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 13:02:21,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:02:21,534 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:02:21,534 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:02:21,534 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:02:21,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:02:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:02:21,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 13:02:21,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:02:34,518 WARN L188 SmtUtils]: Spent 12.77 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 13:02:34,697 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-07 13:02:34,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:34,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:02:36,819 WARN L188 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2019-09-07 13:02:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2741 backedges. 1518 proven. 335 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2019-09-07 13:02:37,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:02:37,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 13:02:37,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:02:37,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:02:37,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:02:37,542 INFO L87 Difference]: Start difference. First operand 3106 states and 4246 transitions. Second operand 7 states. [2019-09-07 13:03:39,032 WARN L188 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 13:03:39,539 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-07 13:03:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:03:42,060 INFO L93 Difference]: Finished difference Result 8450 states and 11428 transitions. [2019-09-07 13:03:42,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:03:42,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2019-09-07 13:03:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:03:42,067 INFO L225 Difference]: With dead ends: 8450 [2019-09-07 13:03:42,067 INFO L226 Difference]: Without dead ends: 4486 [2019-09-07 13:03:42,074 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:03:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2019-09-07 13:03:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3106. [2019-09-07 13:03:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2019-09-07 13:03:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4241 transitions. [2019-09-07 13:03:42,163 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4241 transitions. Word has length 504 [2019-09-07 13:03:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:03:42,163 INFO L475 AbstractCegarLoop]: Abstraction has 3106 states and 4241 transitions. [2019-09-07 13:03:42,164 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:03:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4241 transitions. [2019-09-07 13:03:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2019-09-07 13:03:42,171 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:03:42,172 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 10, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:03:42,172 INFO L418 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:03:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:03:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash 747932244, now seen corresponding path program 1 times [2019-09-07 13:03:42,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:03:42,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:03:42,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:42,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:42,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:42,192 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:03:42,192 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:03:42,192 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:03:42,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:03:42,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:03:42,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:03:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2734 backedges. 1448 proven. 0 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2019-09-07 13:03:42,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:03:42,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:03:42,505 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:03:42,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:03:42,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:42,506 INFO L87 Difference]: Start difference. First operand 3106 states and 4241 transitions. Second operand 3 states. [2019-09-07 13:03:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:03:42,587 INFO L93 Difference]: Finished difference Result 8829 states and 11852 transitions. [2019-09-07 13:03:42,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:03:42,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 507 [2019-09-07 13:03:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:03:42,593 INFO L225 Difference]: With dead ends: 8829 [2019-09-07 13:03:42,594 INFO L226 Difference]: Without dead ends: 5770 [2019-09-07 13:03:42,599 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2019-09-07 13:03:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2019-09-07 13:03:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5768 states. [2019-09-07 13:03:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7611 transitions. [2019-09-07 13:03:42,743 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7611 transitions. Word has length 507 [2019-09-07 13:03:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:03:42,744 INFO L475 AbstractCegarLoop]: Abstraction has 5768 states and 7611 transitions. [2019-09-07 13:03:42,744 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:03:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7611 transitions. [2019-09-07 13:03:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2019-09-07 13:03:42,757 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:03:42,757 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 7, 7, 5, 5, 4, 3, 3, 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] [2019-09-07 13:03:42,757 INFO L418 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:03:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:03:42,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1406719942, now seen corresponding path program 1 times [2019-09-07 13:03:42,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:03:42,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:03:42,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:42,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:42,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:03:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2789 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 2600 trivial. 0 not checked. [2019-09-07 13:03:42,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:03:42,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:03:42,905 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:03:42,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:03:42,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:42,906 INFO L87 Difference]: Start difference. First operand 5768 states and 7611 transitions. Second operand 3 states. [2019-09-07 13:03:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:03:43,044 INFO L93 Difference]: Finished difference Result 11564 states and 15237 transitions. [2019-09-07 13:03:43,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:03:43,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 517 [2019-09-07 13:03:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:03:43,053 INFO L225 Difference]: With dead ends: 11564 [2019-09-07 13:03:43,053 INFO L226 Difference]: Without dead ends: 5843 [2019-09-07 13:03:43,064 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:43,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2019-09-07 13:03:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5798. [2019-09-07 13:03:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5798 states. [2019-09-07 13:03:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5798 states to 5798 states and 7587 transitions. [2019-09-07 13:03:43,316 INFO L78 Accepts]: Start accepts. Automaton has 5798 states and 7587 transitions. Word has length 517 [2019-09-07 13:03:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:03:43,317 INFO L475 AbstractCegarLoop]: Abstraction has 5798 states and 7587 transitions. [2019-09-07 13:03:43,317 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:03:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5798 states and 7587 transitions. [2019-09-07 13:03:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2019-09-07 13:03:43,336 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:03:43,337 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 8, 7, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:03:43,337 INFO L418 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:03:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:03:43,338 INFO L82 PathProgramCache]: Analyzing trace with hash 330429752, now seen corresponding path program 1 times [2019-09-07 13:03:43,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:03:43,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:03:43,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:43,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:43,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:03:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2861 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2019-09-07 13:03:43,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:03:43,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:03:43,543 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:03:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:03:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:43,544 INFO L87 Difference]: Start difference. First operand 5798 states and 7587 transitions. Second operand 3 states. [2019-09-07 13:03:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:03:43,745 INFO L93 Difference]: Finished difference Result 15759 states and 20382 transitions. [2019-09-07 13:03:43,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:03:43,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 533 [2019-09-07 13:03:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:03:43,755 INFO L225 Difference]: With dead ends: 15759 [2019-09-07 13:03:43,755 INFO L226 Difference]: Without dead ends: 10741 [2019-09-07 13:03:43,762 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2019-09-07 13:03:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 5808. [2019-09-07 13:03:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2019-09-07 13:03:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7597 transitions. [2019-09-07 13:03:43,955 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7597 transitions. Word has length 533 [2019-09-07 13:03:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:03:43,955 INFO L475 AbstractCegarLoop]: Abstraction has 5808 states and 7597 transitions. [2019-09-07 13:03:43,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:03:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7597 transitions. [2019-09-07 13:03:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2019-09-07 13:03:43,966 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:03:43,967 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 8, 7, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:03:43,967 INFO L418 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:03:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:03:43,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2091106374, now seen corresponding path program 1 times [2019-09-07 13:03:43,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:03:43,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:03:43,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:43,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:43,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:43,990 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:03:43,990 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:03:43,991 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:03:44,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:03:44,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:03:44,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:03:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2861 backedges. 1316 proven. 0 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2019-09-07 13:03:44,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:03:44,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:03:44,476 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:03:44,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:03:44,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:44,477 INFO L87 Difference]: Start difference. First operand 5808 states and 7597 transitions. Second operand 3 states. [2019-09-07 13:03:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:03:44,624 INFO L93 Difference]: Finished difference Result 8568 states and 11099 transitions. [2019-09-07 13:03:44,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:03:44,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 533 [2019-09-07 13:03:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:03:44,634 INFO L225 Difference]: With dead ends: 8568 [2019-09-07 13:03:44,634 INFO L226 Difference]: Without dead ends: 5899 [2019-09-07 13:03:44,641 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:03:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2019-09-07 13:03:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 5897. [2019-09-07 13:03:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5897 states. [2019-09-07 13:03:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 7633 transitions. [2019-09-07 13:03:44,821 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 7633 transitions. Word has length 533 [2019-09-07 13:03:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:03:44,821 INFO L475 AbstractCegarLoop]: Abstraction has 5897 states and 7633 transitions. [2019-09-07 13:03:44,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:03:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 7633 transitions. [2019-09-07 13:03:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2019-09-07 13:03:44,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:03:44,833 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:03:44,834 INFO L418 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:03:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:03:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1902093680, now seen corresponding path program 4 times [2019-09-07 13:03:44,834 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:03:44,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:03:44,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:44,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:03:44,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:03:44,858 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:03:44,858 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:03:44,858 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-07 13:03:44,880 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:03:44,997 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 13:03:44,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 13:03:45,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 13:03:45,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:03:57,523 WARN L188 SmtUtils]: Spent 12.50 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 13:03:57,694 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-07 13:03:57,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:57,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:03:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 1784 proven. 363 refuted. 28 times theorem prover too weak. 946 trivial. 0 not checked. [2019-09-07 13:03:58,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:03:58,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 13:03:58,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:03:58,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:03:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2019-09-07 13:03:58,781 INFO L87 Difference]: Start difference. First operand 5897 states and 7633 transitions. Second operand 7 states. [2019-09-07 13:04:46,656 WARN L188 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 13:04:49,924 WARN L188 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-07 13:04:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:04:58,480 INFO L93 Difference]: Finished difference Result 19191 states and 24474 transitions. [2019-09-07 13:04:58,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:04:58,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2019-09-07 13:04:58,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:04:58,489 INFO L225 Difference]: With dead ends: 19191 [2019-09-07 13:04:58,490 INFO L226 Difference]: Without dead ends: 8574 [2019-09-07 13:04:58,499 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 529 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=30, Invalid=57, Unknown=3, NotChecked=0, Total=90 [2019-09-07 13:04:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2019-09-07 13:04:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 5956. [2019-09-07 13:04:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5956 states. [2019-09-07 13:04:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 7715 transitions. [2019-09-07 13:04:58,630 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 7715 transitions. Word has length 534 [2019-09-07 13:04:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:04:58,630 INFO L475 AbstractCegarLoop]: Abstraction has 5956 states and 7715 transitions. [2019-09-07 13:04:58,631 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:04:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 7715 transitions. [2019-09-07 13:04:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2019-09-07 13:04:58,640 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:04:58,640 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:04:58,640 INFO L418 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:04:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:04:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2023852426, now seen corresponding path program 1 times [2019-09-07 13:04:58,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:04:58,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:04:58,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:04:58,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 13:04:58,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:04:58,660 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:04:58,660 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:04:58,660 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:04:58,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:04:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:04:58,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 13:04:58,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:05:11,680 WARN L188 SmtUtils]: Spent 12.77 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 13:05:11,796 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 13:05:11,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:11,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:05:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3130 backedges. 1782 proven. 373 refuted. 29 times theorem prover too weak. 946 trivial. 0 not checked. [2019-09-07 13:05:12,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:05:12,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 13:05:12,826 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:05:12,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:05:12,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2019-09-07 13:05:12,826 INFO L87 Difference]: Start difference. First operand 5956 states and 7715 transitions. Second operand 7 states. [2019-09-07 13:06:15,102 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-07 13:06:15,671 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-07 13:06:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:18,554 INFO L93 Difference]: Finished difference Result 19189 states and 24456 transitions. [2019-09-07 13:06:18,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:06:18,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2019-09-07 13:06:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:18,565 INFO L225 Difference]: With dead ends: 19189 [2019-09-07 13:06:18,565 INFO L226 Difference]: Without dead ends: 8442 [2019-09-07 13:06:18,575 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=30, Invalid=57, Unknown=3, NotChecked=0, Total=90 [2019-09-07 13:06:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2019-09-07 13:06:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 5958. [2019-09-07 13:06:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5958 states. [2019-09-07 13:06:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 7695 transitions. [2019-09-07 13:06:18,703 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 7695 transitions. Word has length 535 [2019-09-07 13:06:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:18,704 INFO L475 AbstractCegarLoop]: Abstraction has 5958 states and 7695 transitions. [2019-09-07 13:06:18,704 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:06:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 7695 transitions. [2019-09-07 13:06:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2019-09-07 13:06:18,712 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:18,713 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2019-09-07 13:06:18,713 INFO L418 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1076294937, now seen corresponding path program 5 times [2019-09-07 13:06:18,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:18,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:18,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:18,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:18,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:18,734 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:18,734 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:18,734 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:18,763 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 13:06:18,878 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-09-07 13:06:18,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 13:06:18,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 13:06:18,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 1773 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:06:19,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:06:19,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:06:19,166 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:06:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:06:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:19,167 INFO L87 Difference]: Start difference. First operand 5958 states and 7695 transitions. Second operand 3 states. [2019-09-07 13:06:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:19,383 INFO L93 Difference]: Finished difference Result 10051 states and 12918 transitions. [2019-09-07 13:06:19,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:06:19,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 543 [2019-09-07 13:06:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:19,390 INFO L225 Difference]: With dead ends: 10051 [2019-09-07 13:06:19,391 INFO L226 Difference]: Without dead ends: 5958 [2019-09-07 13:06:19,397 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2019-09-07 13:06:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5958. [2019-09-07 13:06:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5958 states. [2019-09-07 13:06:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 7679 transitions. [2019-09-07 13:06:19,641 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 7679 transitions. Word has length 543 [2019-09-07 13:06:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:19,642 INFO L475 AbstractCegarLoop]: Abstraction has 5958 states and 7679 transitions. [2019-09-07 13:06:19,642 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:06:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 7679 transitions. [2019-09-07 13:06:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2019-09-07 13:06:19,653 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:19,654 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2019-09-07 13:06:19,654 INFO L418 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1068295963, now seen corresponding path program 6 times [2019-09-07 13:06:19,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:19,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:19,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:19,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 13:06:19,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:19,689 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:19,690 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:19,690 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-07 13:06:19,713 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:20,725 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-09-07 13:06:20,725 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 13:06:20,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:06:20,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:20,889 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-09-07 13:06:20,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:20,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:06:30,535 WARN L188 SmtUtils]: Spent 9.55 s on a formula simplification. DAG size of input: 48 DAG size of output: 15 [2019-09-07 13:06:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 1861 proven. 30 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2019-09-07 13:06:30,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:06:30,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-09-07 13:06:30,866 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 13:06:30,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 13:06:30,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 13:06:30,867 INFO L87 Difference]: Start difference. First operand 5958 states and 7679 transitions. Second operand 5 states. [2019-09-07 13:06:33,413 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-09-07 13:06:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:43,377 INFO L93 Difference]: Finished difference Result 17367 states and 22270 transitions. [2019-09-07 13:06:43,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:06:43,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 543 [2019-09-07 13:06:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:43,388 INFO L225 Difference]: With dead ends: 17367 [2019-09-07 13:06:43,388 INFO L226 Difference]: Without dead ends: 11545 [2019-09-07 13:06:43,393 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:06:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2019-09-07 13:06:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 7787. [2019-09-07 13:06:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7787 states. [2019-09-07 13:06:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7787 states to 7787 states and 9931 transitions. [2019-09-07 13:06:43,643 INFO L78 Accepts]: Start accepts. Automaton has 7787 states and 9931 transitions. Word has length 543 [2019-09-07 13:06:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:43,643 INFO L475 AbstractCegarLoop]: Abstraction has 7787 states and 9931 transitions. [2019-09-07 13:06:43,643 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 13:06:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 7787 states and 9931 transitions. [2019-09-07 13:06:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2019-09-07 13:06:43,649 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:43,650 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:06:43,650 INFO L418 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1965388024, now seen corresponding path program 1 times [2019-09-07 13:06:43,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:43,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:43,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:43,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 13:06:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:43,669 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:43,669 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:43,669 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:43,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:06:43,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:06:43,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2995 backedges. 1590 proven. 0 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2019-09-07 13:06:44,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:06:44,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:06:44,082 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:06:44,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:06:44,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:44,084 INFO L87 Difference]: Start difference. First operand 7787 states and 9931 transitions. Second operand 3 states. [2019-09-07 13:06:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:44,894 INFO L93 Difference]: Finished difference Result 22934 states and 29045 transitions. [2019-09-07 13:06:44,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:06:44,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 545 [2019-09-07 13:06:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:44,915 INFO L225 Difference]: With dead ends: 22934 [2019-09-07 13:06:44,915 INFO L226 Difference]: Without dead ends: 15348 [2019-09-07 13:06:44,925 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15348 states. [2019-09-07 13:06:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15348 to 15346. [2019-09-07 13:06:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15346 states. [2019-09-07 13:06:45,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15346 states to 15346 states and 19293 transitions. [2019-09-07 13:06:45,414 INFO L78 Accepts]: Start accepts. Automaton has 15346 states and 19293 transitions. Word has length 545 [2019-09-07 13:06:45,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:45,415 INFO L475 AbstractCegarLoop]: Abstraction has 15346 states and 19293 transitions. [2019-09-07 13:06:45,415 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:06:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15346 states and 19293 transitions. [2019-09-07 13:06:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2019-09-07 13:06:45,423 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:45,424 INFO L399 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 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] [2019-09-07 13:06:45,424 INFO L418 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:45,424 INFO L82 PathProgramCache]: Analyzing trace with hash 519546509, now seen corresponding path program 1 times [2019-09-07 13:06:45,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:45,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:45,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:45,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:45,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:45,442 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:45,442 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:45,442 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:45,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:06:45,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:06:45,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 1666 proven. 0 refuted. 0 times theorem prover too weak. 1538 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Exception during sending of exit command (exit): Stream closed [2019-09-07 13:06:45,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:06:45,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:06:45,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:06:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:06:45,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:45,751 INFO L87 Difference]: Start difference. First operand 15346 states and 19293 transitions. Second operand 3 states. [2019-09-07 13:06:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:46,283 INFO L93 Difference]: Finished difference Result 30647 states and 38317 transitions. [2019-09-07 13:06:46,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:06:46,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 547 [2019-09-07 13:06:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:46,298 INFO L225 Difference]: With dead ends: 30647 [2019-09-07 13:06:46,298 INFO L226 Difference]: Without dead ends: 15898 [2019-09-07 13:06:46,312 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:46,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15898 states. [2019-09-07 13:06:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15898 to 15691. [2019-09-07 13:06:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15691 states. [2019-09-07 13:06:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15691 states to 15691 states and 19668 transitions. [2019-09-07 13:06:46,764 INFO L78 Accepts]: Start accepts. Automaton has 15691 states and 19668 transitions. Word has length 547 [2019-09-07 13:06:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:46,765 INFO L475 AbstractCegarLoop]: Abstraction has 15691 states and 19668 transitions. [2019-09-07 13:06:46,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:06:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15691 states and 19668 transitions. [2019-09-07 13:06:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2019-09-07 13:06:46,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:46,775 INFO L399 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:06:46,775 INFO L418 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:46,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:46,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1793784058, now seen corresponding path program 1 times [2019-09-07 13:06:46,775 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:46,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:46,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:46,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:46,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:46,793 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:46,794 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:46,794 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:46,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:06:46,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:06:46,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 1616 proven. 0 refuted. 0 times theorem prover too weak. 1588 trivial. 0 not checked. [2019-09-07 13:06:47,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:06:47,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:06:47,121 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:06:47,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:06:47,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:47,121 INFO L87 Difference]: Start difference. First operand 15691 states and 19668 transitions. Second operand 3 states. [2019-09-07 13:06:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:47,720 INFO L93 Difference]: Finished difference Result 30065 states and 37380 transitions. [2019-09-07 13:06:47,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:06:47,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 548 [2019-09-07 13:06:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:47,734 INFO L225 Difference]: With dead ends: 30065 [2019-09-07 13:06:47,734 INFO L226 Difference]: Without dead ends: 14969 [2019-09-07 13:06:47,747 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2019-09-07 13:06:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 14273. [2019-09-07 13:06:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14273 states. [2019-09-07 13:06:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 17835 transitions. [2019-09-07 13:06:48,112 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 17835 transitions. Word has length 548 [2019-09-07 13:06:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:48,113 INFO L475 AbstractCegarLoop]: Abstraction has 14273 states and 17835 transitions. [2019-09-07 13:06:48,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:06:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 17835 transitions. [2019-09-07 13:06:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2019-09-07 13:06:48,123 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:48,123 INFO L399 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 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] [2019-09-07 13:06:48,124 INFO L418 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:48,124 INFO L82 PathProgramCache]: Analyzing trace with hash 142901234, now seen corresponding path program 1 times [2019-09-07 13:06:48,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:48,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:48,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:48,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:48,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:48,141 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:48,142 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:48,142 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:48,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:06:48,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:06:48,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 1687 proven. 0 refuted. 0 times theorem prover too weak. 1534 trivial. 0 not checked. [2019-09-07 13:06:48,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:06:48,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:06:48,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:06:48,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:06:48,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:48,391 INFO L87 Difference]: Start difference. First operand 14273 states and 17835 transitions. Second operand 3 states. [2019-09-07 13:06:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:48,822 INFO L93 Difference]: Finished difference Result 28513 states and 35450 transitions. [2019-09-07 13:06:48,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:06:48,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 548 [2019-09-07 13:06:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:48,839 INFO L225 Difference]: With dead ends: 28513 [2019-09-07 13:06:48,839 INFO L226 Difference]: Without dead ends: 14855 [2019-09-07 13:06:48,946 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14855 states. [2019-09-07 13:06:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 14461. [2019-09-07 13:06:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14461 states. [2019-09-07 13:06:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14461 states to 14461 states and 18013 transitions. [2019-09-07 13:06:49,306 INFO L78 Accepts]: Start accepts. Automaton has 14461 states and 18013 transitions. Word has length 548 [2019-09-07 13:06:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:49,307 INFO L475 AbstractCegarLoop]: Abstraction has 14461 states and 18013 transitions. [2019-09-07 13:06:49,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:06:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14461 states and 18013 transitions. [2019-09-07 13:06:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2019-09-07 13:06:49,320 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:49,320 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 9, 7, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:06:49,321 INFO L418 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:49,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:49,321 INFO L82 PathProgramCache]: Analyzing trace with hash 951014912, now seen corresponding path program 2 times [2019-09-07 13:06:49,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:49,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:49,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:49,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:06:49,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:49,340 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:49,340 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:49,340 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:49,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 13:06:49,480 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 13:06:49,480 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 13:06:49,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:06:49,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:06:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 1441 proven. 0 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2019-09-07 13:06:49,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:06:49,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:06:49,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:06:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:06:49,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:49,701 INFO L87 Difference]: Start difference. First operand 14461 states and 18013 transitions. Second operand 3 states. [2019-09-07 13:06:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:06:50,002 INFO L93 Difference]: Finished difference Result 21112 states and 26051 transitions. [2019-09-07 13:06:50,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:06:50,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2019-09-07 13:06:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:06:50,017 INFO L225 Difference]: With dead ends: 21112 [2019-09-07 13:06:50,017 INFO L226 Difference]: Without dead ends: 14463 [2019-09-07 13:06:50,024 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:06:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14463 states. [2019-09-07 13:06:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14463 to 14461. [2019-09-07 13:06:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14461 states. [2019-09-07 13:06:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14461 states to 14461 states and 17868 transitions. [2019-09-07 13:06:50,480 INFO L78 Accepts]: Start accepts. Automaton has 14461 states and 17868 transitions. Word has length 553 [2019-09-07 13:06:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:06:50,480 INFO L475 AbstractCegarLoop]: Abstraction has 14461 states and 17868 transitions. [2019-09-07 13:06:50,480 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:06:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 14461 states and 17868 transitions. [2019-09-07 13:06:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2019-09-07 13:06:50,491 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:06:50,492 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:06:50,492 INFO L418 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:06:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:06:50,493 INFO L82 PathProgramCache]: Analyzing trace with hash -134807514, now seen corresponding path program 1 times [2019-09-07 13:06:50,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:06:50,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:06:50,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:50,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 13:06:50,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:06:50,511 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-07 13:06:50,511 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-07 13:06:50,511 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-07 13:06:50,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-07 13:06:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:06:50,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-07 13:06:50,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:07:05,150 WARN L188 SmtUtils]: Spent 14.45 s on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-07 13:07:05,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:05,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:07:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3073 backedges. 1712 proven. 370 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2019-09-07 13:07:06,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:07:06,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-07 13:07:06,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:07:06,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:07:06,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:07:06,294 INFO L87 Difference]: Start difference. First operand 14461 states and 17868 transitions. Second operand 7 states.