java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 20:47:55,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 20:47:55,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 20:47:55,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 20:47:55,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 20:47:55,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 20:47:55,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 20:47:55,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 20:47:55,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 20:47:55,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 20:47:55,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 20:47:55,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 20:47:55,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 20:47:55,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 20:47:55,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 20:47:55,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 20:47:55,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 20:47:55,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 20:47:55,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 20:47:55,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 20:47:55,292 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 20:47:55,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 20:47:55,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 20:47:55,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 20:47:55,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 20:47:55,309 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 20:47:55,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 20:47:55,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 20:47:55,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 20:47:55,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 20:47:55,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 20:47:55,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 20:47:55,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 20:47:55,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 20:47:55,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 20:47:55,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 20:47:55,312 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 20:47:55,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 20:47:55,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 20:47:55,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 20:47:55,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 20:47:55,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 20:47:55,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 20:47:55,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 20:47:55,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 20:47:55,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 20:47:55,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 20:47:55,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 20:47:55,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 20:47:55,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 20:47:55,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 20:47:55,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 20:47:55,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 20:47:55,361 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 20:47:55,361 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 20:47:55,362 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2019-09-07 20:47:55,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0408520d2/d3aeda31325c43fb90acebc3d1fb855b/FLAG69f168a34 [2019-09-07 20:47:56,161 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 20:47:56,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2019-09-07 20:47:56,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0408520d2/d3aeda31325c43fb90acebc3d1fb855b/FLAG69f168a34 [2019-09-07 20:47:56,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0408520d2/d3aeda31325c43fb90acebc3d1fb855b [2019-09-07 20:47:56,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 20:47:56,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 20:47:56,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 20:47:56,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 20:47:56,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 20:47:56,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:47:56" (1/1) ... [2019-09-07 20:47:56,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b05b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:56, skipping insertion in model container [2019-09-07 20:47:56,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:47:56" (1/1) ... [2019-09-07 20:47:56,382 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 20:47:56,471 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 20:47:57,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:47:57,315 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 20:47:57,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:47:57,594 INFO L192 MainTranslator]: Completed translation [2019-09-07 20:47:57,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57 WrapperNode [2019-09-07 20:47:57,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 20:47:57,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 20:47:57,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 20:47:57,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 20:47:57,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... [2019-09-07 20:47:57,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 20:47:57,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 20:47:57,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 20:47:57,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 20:47:57,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 20:47:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 20:47:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 20:47:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 20:47:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 20:47:57,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 20:47:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 20:47:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 20:47:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 20:47:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 20:47:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 20:47:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 20:47:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 20:47:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 20:48:00,840 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 20:48:00,840 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 20:48:00,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:48:00 BoogieIcfgContainer [2019-09-07 20:48:00,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 20:48:00,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 20:48:00,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 20:48:00,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 20:48:00,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 08:47:56" (1/3) ... [2019-09-07 20:48:00,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4355665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:48:00, skipping insertion in model container [2019-09-07 20:48:00,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:47:57" (2/3) ... [2019-09-07 20:48:00,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4355665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:48:00, skipping insertion in model container [2019-09-07 20:48:00,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:48:00" (3/3) ... [2019-09-07 20:48:00,851 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label51.c [2019-09-07 20:48:00,867 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 20:48:00,878 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 20:48:00,906 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 20:48:00,955 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 20:48:00,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 20:48:00,957 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 20:48:00,957 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 20:48:00,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 20:48:00,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 20:48:00,958 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 20:48:00,958 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 20:48:00,959 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 20:48:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-09-07 20:48:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-07 20:48:01,002 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:01,003 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] [2019-09-07 20:48:01,006 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:01,015 INFO L82 PathProgramCache]: Analyzing trace with hash -655623200, now seen corresponding path program 1 times [2019-09-07 20:48:01,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:01,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:01,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:01,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:01,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:01,406 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 20:48:01,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:48:01,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:48:01,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:48:01,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:48:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:01,447 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-09-07 20:48:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:06,383 INFO L93 Difference]: Finished difference Result 1554 states and 2845 transitions. [2019-09-07 20:48:06,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:48:06,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-09-07 20:48:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:06,417 INFO L225 Difference]: With dead ends: 1554 [2019-09-07 20:48:06,417 INFO L226 Difference]: Without dead ends: 1036 [2019-09-07 20:48:06,426 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-09-07 20:48:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 697. [2019-09-07 20:48:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-09-07 20:48:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1188 transitions. [2019-09-07 20:48:06,529 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1188 transitions. Word has length 22 [2019-09-07 20:48:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:06,530 INFO L475 AbstractCegarLoop]: Abstraction has 697 states and 1188 transitions. [2019-09-07 20:48:06,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:48:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1188 transitions. [2019-09-07 20:48:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-07 20:48:06,535 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:06,536 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:06,536 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:06,536 INFO L82 PathProgramCache]: Analyzing trace with hash -849252508, now seen corresponding path program 1 times [2019-09-07 20:48:06,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:06,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:06,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:06,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:06,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:48:06,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:48:06,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:48:06,765 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:48:06,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:48:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:06,766 INFO L87 Difference]: Start difference. First operand 697 states and 1188 transitions. Second operand 4 states. [2019-09-07 20:48:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:10,467 INFO L93 Difference]: Finished difference Result 2627 states and 4583 transitions. [2019-09-07 20:48:10,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:48:10,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-09-07 20:48:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:10,487 INFO L225 Difference]: With dead ends: 2627 [2019-09-07 20:48:10,487 INFO L226 Difference]: Without dead ends: 1936 [2019-09-07 20:48:10,490 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2019-09-07 20:48:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1933. [2019-09-07 20:48:10,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2019-09-07 20:48:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2950 transitions. [2019-09-07 20:48:10,615 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2950 transitions. Word has length 91 [2019-09-07 20:48:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:10,616 INFO L475 AbstractCegarLoop]: Abstraction has 1933 states and 2950 transitions. [2019-09-07 20:48:10,616 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:48:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2950 transitions. [2019-09-07 20:48:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-07 20:48:10,628 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:10,630 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:10,630 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2108878396, now seen corresponding path program 1 times [2019-09-07 20:48:10,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:10,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:10,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:10,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:48:10,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:48:10,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 20:48:10,865 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 20:48:10,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 20:48:10,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 20:48:10,866 INFO L87 Difference]: Start difference. First operand 1933 states and 2950 transitions. Second operand 5 states. [2019-09-07 20:48:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:14,474 INFO L93 Difference]: Finished difference Result 5794 states and 9031 transitions. [2019-09-07 20:48:14,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 20:48:14,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-09-07 20:48:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:14,512 INFO L225 Difference]: With dead ends: 5794 [2019-09-07 20:48:14,512 INFO L226 Difference]: Without dead ends: 3867 [2019-09-07 20:48:14,524 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 20:48:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2019-09-07 20:48:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3830. [2019-09-07 20:48:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3830 states. [2019-09-07 20:48:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 5188 transitions. [2019-09-07 20:48:14,640 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 5188 transitions. Word has length 138 [2019-09-07 20:48:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:14,641 INFO L475 AbstractCegarLoop]: Abstraction has 3830 states and 5188 transitions. [2019-09-07 20:48:14,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 20:48:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 5188 transitions. [2019-09-07 20:48:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2019-09-07 20:48:14,647 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:14,648 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:14,648 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1686399431, now seen corresponding path program 1 times [2019-09-07 20:48:14,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:14,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:14,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:14,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:14,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 244 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 20:48:15,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:15,593 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:48:15,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:15,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:48:15,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:15,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:48:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 20:48:16,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:48:16,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-09-07 20:48:16,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 20:48:16,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 20:48:16,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-09-07 20:48:16,407 INFO L87 Difference]: Start difference. First operand 3830 states and 5188 transitions. Second operand 13 states. [2019-09-07 20:48:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:31,059 INFO L93 Difference]: Finished difference Result 11789 states and 18547 transitions. [2019-09-07 20:48:31,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-07 20:48:31,060 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 400 [2019-09-07 20:48:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:31,117 INFO L225 Difference]: With dead ends: 11789 [2019-09-07 20:48:31,118 INFO L226 Difference]: Without dead ends: 7965 [2019-09-07 20:48:31,132 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 418 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=851, Invalid=3055, Unknown=0, NotChecked=0, Total=3906 [2019-09-07 20:48:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2019-09-07 20:48:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 5846. [2019-09-07 20:48:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5846 states. [2019-09-07 20:48:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 7944 transitions. [2019-09-07 20:48:31,372 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 7944 transitions. Word has length 400 [2019-09-07 20:48:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:31,373 INFO L475 AbstractCegarLoop]: Abstraction has 5846 states and 7944 transitions. [2019-09-07 20:48:31,373 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 20:48:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 7944 transitions. [2019-09-07 20:48:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2019-09-07 20:48:31,384 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:31,385 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:31,385 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash 798101745, now seen corresponding path program 1 times [2019-09-07 20:48:31,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:31,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:31,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:31,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:31,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-07 20:48:31,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:31,934 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:48:31,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:32,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:48:32,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-07 20:48:32,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:48:32,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:48:32,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:48:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:48:32,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:48:32,309 INFO L87 Difference]: Start difference. First operand 5846 states and 7944 transitions. Second operand 9 states. [2019-09-07 20:48:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:42,187 INFO L93 Difference]: Finished difference Result 14431 states and 21023 transitions. [2019-09-07 20:48:42,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 20:48:42,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 477 [2019-09-07 20:48:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:42,246 INFO L225 Difference]: With dead ends: 14431 [2019-09-07 20:48:42,247 INFO L226 Difference]: Without dead ends: 8898 [2019-09-07 20:48:42,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 20:48:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2019-09-07 20:48:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 8517. [2019-09-07 20:48:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8517 states. [2019-09-07 20:48:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8517 states to 8517 states and 10960 transitions. [2019-09-07 20:48:42,539 INFO L78 Accepts]: Start accepts. Automaton has 8517 states and 10960 transitions. Word has length 477 [2019-09-07 20:48:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:42,541 INFO L475 AbstractCegarLoop]: Abstraction has 8517 states and 10960 transitions. [2019-09-07 20:48:42,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:48:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8517 states and 10960 transitions. [2019-09-07 20:48:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2019-09-07 20:48:42,557 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:42,558 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:42,558 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:42,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1689738949, now seen corresponding path program 1 times [2019-09-07 20:48:42,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:42,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:42,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:42,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:42,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 132 proven. 85 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-09-07 20:48:43,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:43,065 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 20:48:43,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:48:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:43,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:48:43,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-07 20:48:43,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:48:43,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:48:43,476 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:48:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:48:43,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:48:43,485 INFO L87 Difference]: Start difference. First operand 8517 states and 10960 transitions. Second operand 9 states. [2019-09-07 20:48:51,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:51,544 INFO L93 Difference]: Finished difference Result 15481 states and 19921 transitions. [2019-09-07 20:48:51,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 20:48:51,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2019-09-07 20:48:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:51,571 INFO L225 Difference]: With dead ends: 15481 [2019-09-07 20:48:51,571 INFO L226 Difference]: Without dead ends: 7584 [2019-09-07 20:48:51,600 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 20:48:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2019-09-07 20:48:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 6855. [2019-09-07 20:48:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6855 states. [2019-09-07 20:48:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6855 states to 6855 states and 7849 transitions. [2019-09-07 20:48:51,766 INFO L78 Accepts]: Start accepts. Automaton has 6855 states and 7849 transitions. Word has length 482 [2019-09-07 20:48:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:51,768 INFO L475 AbstractCegarLoop]: Abstraction has 6855 states and 7849 transitions. [2019-09-07 20:48:51,768 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:48:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6855 states and 7849 transitions. [2019-09-07 20:48:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2019-09-07 20:48:51,782 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:51,783 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:51,783 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -303553625, now seen corresponding path program 1 times [2019-09-07 20:48:51,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:51,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:51,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:51,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 20:48:52,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:52,288 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 20:48:52,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:48:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:52,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 20:48:52,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:52,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:48:52,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:49:06,858 WARN L188 SmtUtils]: Spent 14.21 s on a formula simplification that was a NOOP. DAG size: 39 [2019-09-07 20:49:06,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:09,052 WARN L188 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2019-09-07 20:49:09,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 232 proven. 110 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-07 20:49:09,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:49:09,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-09-07 20:49:09,453 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 20:49:09,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 20:49:09,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-09-07 20:49:09,454 INFO L87 Difference]: Start difference. First operand 6855 states and 7849 transitions. Second operand 11 states. [2019-09-07 20:49:42,424 WARN L188 SmtUtils]: Spent 30.26 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-07 20:49:46,642 WARN L188 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-07 20:50:11,551 WARN L188 SmtUtils]: Spent 16.37 s on a formula simplification that was a NOOP. DAG size: 46 [2019-09-07 20:50:43,861 WARN L188 SmtUtils]: Spent 32.23 s on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-07 20:50:48,044 WARN L188 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-07 20:51:32,367 WARN L188 SmtUtils]: Spent 24.70 s on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 20:52:15,978 WARN L188 SmtUtils]: Spent 10.70 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-07 20:52:59,233 WARN L188 SmtUtils]: Spent 28.28 s on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-07 20:53:03,550 WARN L188 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-09-07 20:56:27,033 WARN L188 SmtUtils]: Spent 32.28 s on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 20:58:14,243 WARN L188 SmtUtils]: Spent 26.47 s on a formula simplification. DAG size of input: 58 DAG size of output: 54