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/Problem11_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 18:31:08,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 18:31:08,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 18:31:08,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 18:31:08,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 18:31:08,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 18:31:08,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 18:31:08,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 18:31:08,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 18:31:08,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 18:31:08,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 18:31:08,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 18:31:08,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 18:31:08,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 18:31:08,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 18:31:08,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 18:31:08,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 18:31:08,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 18:31:08,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 18:31:08,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 18:31:08,991 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 18:31:09,022 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 18:31:09,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 18:31:09,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 18:31:09,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 18:31:09,024 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 18:31:09,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 18:31:09,024 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 18:31:09,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 18:31:09,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 18:31:09,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 18:31:09,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 18:31:09,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 18:31:09,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 18:31:09,025 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 18:31:09,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 18:31:09,026 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 18:31:09,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 18:31:09,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 18:31:09,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 18:31:09,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 18:31:09,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 18:31:09,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:31:09,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 18:31:09,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 18:31:09,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 18:31:09,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 18:31:09,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 18:31:09,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 18:31:09,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 18:31:09,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 18:31:09,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 18:31:09,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 18:31:09,087 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 18:31:09,087 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 18:31:09,088 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2019-09-07 18:31:09,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6aaa7ea1/843260e63e5f4a089746fc76ffdf96cb/FLAG674ec3f1c [2019-09-07 18:31:09,774 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 18:31:09,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2019-09-07 18:31:09,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6aaa7ea1/843260e63e5f4a089746fc76ffdf96cb/FLAG674ec3f1c [2019-09-07 18:31:09,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6aaa7ea1/843260e63e5f4a089746fc76ffdf96cb [2019-09-07 18:31:09,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 18:31:09,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 18:31:09,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 18:31:09,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 18:31:09,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 18:31:09,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:31:09" (1/1) ... [2019-09-07 18:31:10,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc6461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:09, skipping insertion in model container [2019-09-07 18:31:10,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:31:09" (1/1) ... [2019-09-07 18:31:10,009 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 18:31:10,083 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 18:31:10,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:31:10,738 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 18:31:11,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:31:11,055 INFO L192 MainTranslator]: Completed translation [2019-09-07 18:31:11,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11 WrapperNode [2019-09-07 18:31:11,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 18:31:11,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 18:31:11,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 18:31:11,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 18:31:11,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (1/1) ... [2019-09-07 18:31:11,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 18:31:11,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 18:31:11,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 18:31:11,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 18:31:11,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (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 18:31:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 18:31:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 18:31:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 18:31:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 18:31:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 18:31:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 18:31:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 18:31:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 18:31:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 18:31:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 18:31:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 18:31:13,340 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 18:31:13,340 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 18:31:13,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:31:13 BoogieIcfgContainer [2019-09-07 18:31:13,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 18:31:13,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 18:31:13,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 18:31:13,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 18:31:13,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 06:31:09" (1/3) ... [2019-09-07 18:31:13,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae8d0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:31:13, skipping insertion in model container [2019-09-07 18:31:13,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:31:11" (2/3) ... [2019-09-07 18:31:13,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae8d0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:31:13, skipping insertion in model container [2019-09-07 18:31:13,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:31:13" (3/3) ... [2019-09-07 18:31:13,361 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label52.c [2019-09-07 18:31:13,374 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 18:31:13,386 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 18:31:13,405 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 18:31:13,454 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 18:31:13,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 18:31:13,456 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 18:31:13,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 18:31:13,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 18:31:13,456 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 18:31:13,456 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 18:31:13,456 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 18:31:13,457 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 18:31:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-09-07 18:31:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-07 18:31:13,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:13,511 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:31:13,513 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:13,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1581984787, now seen corresponding path program 1 times [2019-09-07 18:31:13,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:13,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:13,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:13,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:13,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:14,017 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 18:31:14,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:31:14,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:31:14,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:31:14,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:31:14,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:31:14,043 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2019-09-07 18:31:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:15,582 INFO L93 Difference]: Finished difference Result 787 states and 1379 transitions. [2019-09-07 18:31:15,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:31:15,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-09-07 18:31:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:15,603 INFO L225 Difference]: With dead ends: 787 [2019-09-07 18:31:15,603 INFO L226 Difference]: Without dead ends: 433 [2019-09-07 18:31:15,611 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 18:31:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-09-07 18:31:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 426. [2019-09-07 18:31:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-09-07 18:31:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 678 transitions. [2019-09-07 18:31:15,700 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 678 transitions. Word has length 58 [2019-09-07 18:31:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:15,701 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 678 transitions. [2019-09-07 18:31:15,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:31:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 678 transitions. [2019-09-07 18:31:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-07 18:31:15,713 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:15,713 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:31:15,714 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:15,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1626208929, now seen corresponding path program 1 times [2019-09-07 18:31:15,714 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:15,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:15,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:15,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:15,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:15,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:31:15,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:31:15,890 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:31:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:31:15,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:31:15,891 INFO L87 Difference]: Start difference. First operand 426 states and 678 transitions. Second operand 5 states. [2019-09-07 18:31:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:17,485 INFO L93 Difference]: Finished difference Result 1259 states and 2034 transitions. [2019-09-07 18:31:17,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 18:31:17,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-09-07 18:31:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:17,492 INFO L225 Difference]: With dead ends: 1259 [2019-09-07 18:31:17,493 INFO L226 Difference]: Without dead ends: 839 [2019-09-07 18:31:17,495 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 18:31:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-07 18:31:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 627. [2019-09-07 18:31:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2019-09-07 18:31:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 934 transitions. [2019-09-07 18:31:17,544 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 934 transitions. Word has length 133 [2019-09-07 18:31:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:17,545 INFO L475 AbstractCegarLoop]: Abstraction has 627 states and 934 transitions. [2019-09-07 18:31:17,545 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:31:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 934 transitions. [2019-09-07 18:31:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-07 18:31:17,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:17,549 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:31:17,550 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:17,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1025717770, now seen corresponding path program 1 times [2019-09-07 18:31:17,550 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:17,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:17,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:17,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:17,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:31:17,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:31:17,765 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:31:17,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:31:17,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:31:17,766 INFO L87 Difference]: Start difference. First operand 627 states and 934 transitions. Second operand 5 states. [2019-09-07 18:31:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:19,585 INFO L93 Difference]: Finished difference Result 1872 states and 2846 transitions. [2019-09-07 18:31:19,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 18:31:19,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-09-07 18:31:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:19,593 INFO L225 Difference]: With dead ends: 1872 [2019-09-07 18:31:19,594 INFO L226 Difference]: Without dead ends: 1251 [2019-09-07 18:31:19,597 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 18:31:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-09-07 18:31:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1032. [2019-09-07 18:31:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2019-09-07 18:31:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1433 transitions. [2019-09-07 18:31:19,646 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1433 transitions. Word has length 144 [2019-09-07 18:31:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:19,647 INFO L475 AbstractCegarLoop]: Abstraction has 1032 states and 1433 transitions. [2019-09-07 18:31:19,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:31:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1433 transitions. [2019-09-07 18:31:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-07 18:31:19,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:19,654 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:31:19,655 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash 485557948, now seen corresponding path program 1 times [2019-09-07 18:31:19,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:19,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:19,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:19,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:19,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:20,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:31:20,021 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 18:31:20,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:20,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:31:20,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:31:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 18:31:20,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:31:20,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 18:31:20,237 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:31:20,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:31:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:31:20,240 INFO L87 Difference]: Start difference. First operand 1032 states and 1433 transitions. Second operand 9 states. [2019-09-07 18:31:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:24,563 INFO L93 Difference]: Finished difference Result 4235 states and 6413 transitions. [2019-09-07 18:31:24,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 18:31:24,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 189 [2019-09-07 18:31:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:24,597 INFO L225 Difference]: With dead ends: 4235 [2019-09-07 18:31:24,597 INFO L226 Difference]: Without dead ends: 3209 [2019-09-07 18:31:24,605 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:31:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2019-09-07 18:31:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3198. [2019-09-07 18:31:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3198 states. [2019-09-07 18:31:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4444 transitions. [2019-09-07 18:31:24,807 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4444 transitions. Word has length 189 [2019-09-07 18:31:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:24,809 INFO L475 AbstractCegarLoop]: Abstraction has 3198 states and 4444 transitions. [2019-09-07 18:31:24,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:31:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4444 transitions. [2019-09-07 18:31:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-09-07 18:31:24,815 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:24,816 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:31:24,816 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash 970434186, now seen corresponding path program 1 times [2019-09-07 18:31:24,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:24,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:24,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:24,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:24,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 18:31:25,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:31:25,152 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 18:31:25,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:25,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:31:25,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:31:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-09-07 18:31:25,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:31:25,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:31:25,489 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:31:25,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:31:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:31:25,490 INFO L87 Difference]: Start difference. First operand 3198 states and 4444 transitions. Second operand 9 states. [2019-09-07 18:31:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:27,832 INFO L93 Difference]: Finished difference Result 10231 states and 15481 transitions. [2019-09-07 18:31:27,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:31:27,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2019-09-07 18:31:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:27,889 INFO L225 Difference]: With dead ends: 10231 [2019-09-07 18:31:27,890 INFO L226 Difference]: Without dead ends: 7043 [2019-09-07 18:31:27,904 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:31:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7043 states. [2019-09-07 18:31:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7043 to 6949. [2019-09-07 18:31:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6949 states. [2019-09-07 18:31:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6949 states to 6949 states and 9952 transitions. [2019-09-07 18:31:28,166 INFO L78 Accepts]: Start accepts. Automaton has 6949 states and 9952 transitions. Word has length 217 [2019-09-07 18:31:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:28,166 INFO L475 AbstractCegarLoop]: Abstraction has 6949 states and 9952 transitions. [2019-09-07 18:31:28,167 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:31:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6949 states and 9952 transitions. [2019-09-07 18:31:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-09-07 18:31:28,173 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:28,173 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:31:28,174 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:28,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1855111470, now seen corresponding path program 1 times [2019-09-07 18:31:28,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:28,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:28,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:28,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:28,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-09-07 18:31:28,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:31:28,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:31:28,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:31:28,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:31:28,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:31:28,328 INFO L87 Difference]: Start difference. First operand 6949 states and 9952 transitions. Second operand 3 states. [2019-09-07 18:31:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:29,628 INFO L93 Difference]: Finished difference Result 15615 states and 22866 transitions. [2019-09-07 18:31:29,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:31:29,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2019-09-07 18:31:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:29,683 INFO L225 Difference]: With dead ends: 15615 [2019-09-07 18:31:29,683 INFO L226 Difference]: Without dead ends: 8860 [2019-09-07 18:31:29,707 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 18:31:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2019-09-07 18:31:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8672. [2019-09-07 18:31:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2019-09-07 18:31:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12384 transitions. [2019-09-07 18:31:29,954 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12384 transitions. Word has length 219 [2019-09-07 18:31:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:29,955 INFO L475 AbstractCegarLoop]: Abstraction has 8672 states and 12384 transitions. [2019-09-07 18:31:29,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:31:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12384 transitions. [2019-09-07 18:31:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-09-07 18:31:29,978 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:29,978 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:31:29,979 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2070325812, now seen corresponding path program 1 times [2019-09-07 18:31:29,988 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:29,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:29,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:29,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:29,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:30,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:31:30,329 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 18:31:30,343 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 18:31:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:30,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 18:31:30,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:31:30,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:31:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-09-07 18:31:30,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:31:30,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:31:30,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:31:30,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:31:30,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:31:30,656 INFO L87 Difference]: Start difference. First operand 8672 states and 12384 transitions. Second operand 9 states. [2019-09-07 18:31:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:34,967 INFO L93 Difference]: Finished difference Result 20913 states and 30260 transitions. [2019-09-07 18:31:34,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 18:31:34,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2019-09-07 18:31:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:35,053 INFO L225 Difference]: With dead ends: 20913 [2019-09-07 18:31:35,054 INFO L226 Difference]: Without dead ends: 12435 [2019-09-07 18:31:35,100 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2019-09-07 18:31:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12435 states. [2019-09-07 18:31:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12435 to 11249. [2019-09-07 18:31:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11249 states. [2019-09-07 18:31:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11249 states to 11249 states and 15780 transitions. [2019-09-07 18:31:35,442 INFO L78 Accepts]: Start accepts. Automaton has 11249 states and 15780 transitions. Word has length 297 [2019-09-07 18:31:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:35,443 INFO L475 AbstractCegarLoop]: Abstraction has 11249 states and 15780 transitions. [2019-09-07 18:31:35,443 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:31:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 11249 states and 15780 transitions. [2019-09-07 18:31:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-09-07 18:31:35,471 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:35,472 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:31:35,472 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:35,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2053421523, now seen corresponding path program 1 times [2019-09-07 18:31:35,473 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:35,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:35,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:35,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:35,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:36,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:31:36,519 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:31:36,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:36,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-07 18:31:36,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:31:36,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:31:36,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:31:36,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:31:36,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:31:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:37,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:31:37,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 17 [2019-09-07 18:31:37,329 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 18:31:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 18:31:37,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-09-07 18:31:37,330 INFO L87 Difference]: Start difference. First operand 11249 states and 15780 transitions. Second operand 17 states. [2019-09-07 18:31:37,456 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-07 18:31:38,968 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-07 18:31:39,640 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-07 18:31:39,992 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 18:31:40,782 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 18:31:41,463 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-07 18:31:42,599 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-07 18:31:43,491 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-07 18:31:44,058 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-07 18:31:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:31:45,281 INFO L93 Difference]: Finished difference Result 23708 states and 35133 transitions. [2019-09-07 18:31:45,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-07 18:31:45,282 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 340 [2019-09-07 18:31:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:31:45,338 INFO L225 Difference]: With dead ends: 23708 [2019-09-07 18:31:45,338 INFO L226 Difference]: Without dead ends: 12657 [2019-09-07 18:31:45,376 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=822, Invalid=2484, Unknown=0, NotChecked=0, Total=3306 [2019-09-07 18:31:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states. [2019-09-07 18:31:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12657 to 12422. [2019-09-07 18:31:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12422 states. [2019-09-07 18:31:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12422 states to 12422 states and 17006 transitions. [2019-09-07 18:31:45,728 INFO L78 Accepts]: Start accepts. Automaton has 12422 states and 17006 transitions. Word has length 340 [2019-09-07 18:31:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:31:45,729 INFO L475 AbstractCegarLoop]: Abstraction has 12422 states and 17006 transitions. [2019-09-07 18:31:45,729 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 18:31:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 12422 states and 17006 transitions. [2019-09-07 18:31:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-09-07 18:31:45,753 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:31:45,753 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:31:45,754 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:31:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:31:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1595723634, now seen corresponding path program 1 times [2019-09-07 18:31:45,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:31:45,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:31:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:45,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:45,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:31:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 199 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:46,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:31:46,274 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:31:46,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:31:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:31:46,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 18:31:46,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:31:46,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:31:46,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:31:52,493 WARN L188 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2019-09-07 18:31:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 4 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:31:52,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:31:52,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2019-09-07 18:31:52,656 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 18:31:52,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 18:31:52,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2019-09-07 18:31:52,657 INFO L87 Difference]: Start difference. First operand 12422 states and 17006 transitions. Second operand 11 states. [2019-09-07 18:31:54,506 WARN L188 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-07 18:32:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:32:58,718 INFO L93 Difference]: Finished difference Result 41089 states and 61603 transitions. [2019-09-07 18:32:58,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 18:32:58,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 371 [2019-09-07 18:32:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:32:58,874 INFO L225 Difference]: With dead ends: 41089 [2019-09-07 18:32:58,875 INFO L226 Difference]: Without dead ends: 28865 [2019-09-07 18:32:58,910 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=241, Invalid=686, Unknown=3, NotChecked=0, Total=930 [2019-09-07 18:32:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28865 states. [2019-09-07 18:32:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28865 to 27826. [2019-09-07 18:32:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27826 states. [2019-09-07 18:32:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27826 states to 27826 states and 37722 transitions. [2019-09-07 18:32:59,715 INFO L78 Accepts]: Start accepts. Automaton has 27826 states and 37722 transitions. Word has length 371 [2019-09-07 18:32:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:32:59,716 INFO L475 AbstractCegarLoop]: Abstraction has 27826 states and 37722 transitions. [2019-09-07 18:32:59,716 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 18:32:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 27826 states and 37722 transitions. [2019-09-07 18:32:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2019-09-07 18:32:59,795 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:32:59,796 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:32:59,796 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:32:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:32:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash 915748287, now seen corresponding path program 1 times [2019-09-07 18:32:59,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:32:59,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:32:59,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:32:59,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:32:59,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:32:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 284 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:02,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:33:02,186 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:33:02,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:02,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-07 18:33:02,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:33:02,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:33:02,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:33:02,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:33:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 337 proven. 108 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-09-07 18:33:02,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:33:02,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 25 [2019-09-07 18:33:02,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-07 18:33:02,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-07 18:33:02,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2019-09-07 18:33:02,947 INFO L87 Difference]: Start difference. First operand 27826 states and 37722 transitions. Second operand 25 states. [2019-09-07 18:33:06,455 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-07 18:33:06,761 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 18:33:06,988 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-07 18:33:07,666 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2019-09-07 18:33:08,105 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-09-07 18:33:09,071 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-07 18:33:09,859 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2019-09-07 18:33:11,642 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-07 18:33:12,068 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2019-09-07 18:33:12,281 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-07 18:33:12,565 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 18:33:16,406 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-07 18:33:16,924 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-07 18:33:17,102 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-07 18:33:17,989 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-09-07 18:33:18,237 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2019-09-07 18:33:18,513 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-07 18:33:19,131 WARN L188 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 18:33:21,713 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-07 18:33:23,412 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-07 18:33:23,694 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-07 18:33:29,033 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-07 18:33:29,337 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2019-09-07 18:33:38,940 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 18:33:39,787 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 18:33:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:51,256 INFO L93 Difference]: Finished difference Result 70430 states and 102561 transitions. [2019-09-07 18:33:51,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2019-09-07 18:33:51,258 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 459 [2019-09-07 18:33:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:51,471 INFO L225 Difference]: With dead ends: 70430 [2019-09-07 18:33:51,471 INFO L226 Difference]: Without dead ends: 42598 [2019-09-07 18:33:51,527 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 471 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13448 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=4396, Invalid=30012, Unknown=2, NotChecked=0, Total=34410 [2019-09-07 18:33:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42598 states. [2019-09-07 18:33:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42598 to 38210. [2019-09-07 18:33:52,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38210 states. [2019-09-07 18:33:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38210 states to 38210 states and 50280 transitions. [2019-09-07 18:33:52,769 INFO L78 Accepts]: Start accepts. Automaton has 38210 states and 50280 transitions. Word has length 459 [2019-09-07 18:33:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:52,770 INFO L475 AbstractCegarLoop]: Abstraction has 38210 states and 50280 transitions. [2019-09-07 18:33:52,770 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-07 18:33:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 38210 states and 50280 transitions. [2019-09-07 18:33:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2019-09-07 18:33:52,869 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:52,869 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 18:33:52,870 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash 605251867, now seen corresponding path program 1 times [2019-09-07 18:33:52,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:52,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:52,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:52,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:52,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 234 proven. 264 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-07 18:33:54,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:33:54,523 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:33:54,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:54,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 18:33:54,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:33:54,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:33:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 446 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-09-07 18:33:55,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:33:55,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 26 [2019-09-07 18:33:55,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-07 18:33:55,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-07 18:33:55,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-07 18:33:55,187 INFO L87 Difference]: Start difference. First operand 38210 states and 50280 transitions. Second operand 26 states. [2019-09-07 18:33:56,881 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2019-09-07 18:33:59,380 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2019-09-07 18:33:59,825 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2019-09-07 18:34:00,183 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-09-07 18:34:01,499 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-09-07 18:34:02,505 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-07 18:34:03,336 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-07 18:34:03,960 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 18:34:05,292 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2019-09-07 18:34:05,847 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2019-09-07 18:34:07,295 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-07 18:34:08,186 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2019-09-07 18:34:08,752 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-07 18:34:10,301 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-07 18:34:10,708 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2019-09-07 18:34:11,327 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 18:34:11,726 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-07 18:34:13,147 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2019-09-07 18:34:13,463 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-09-07 18:34:14,075 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-07 18:34:14,887 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-07 18:34:15,748 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-09-07 18:34:16,325 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 18:34:16,496 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-07 18:34:17,339 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-07 18:34:17,542 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-07 18:34:18,348 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2019-09-07 18:34:18,617 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-07 18:34:18,785 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-07 18:34:19,401 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-07 18:34:19,744 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-07 18:34:20,563 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-07 18:34:22,765 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-07 18:34:24,463 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-07 18:34:25,542 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 18:34:31,785 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-07 18:34:39,531 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-07 18:34:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:45,204 INFO L93 Difference]: Finished difference Result 97277 states and 136911 transitions. [2019-09-07 18:34:45,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2019-09-07 18:34:45,205 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 464 [2019-09-07 18:34:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:45,399 INFO L225 Difference]: With dead ends: 97277 [2019-09-07 18:34:45,399 INFO L226 Difference]: Without dead ends: 59257 [2019-09-07 18:34:45,480 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18857 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=5814, Invalid=38918, Unknown=0, NotChecked=0, Total=44732 [2019-09-07 18:34:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59257 states. [2019-09-07 18:34:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59257 to 54677. [2019-09-07 18:34:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54677 states. [2019-09-07 18:34:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54677 states to 54677 states and 70311 transitions. [2019-09-07 18:34:47,231 INFO L78 Accepts]: Start accepts. Automaton has 54677 states and 70311 transitions. Word has length 464 [2019-09-07 18:34:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:47,232 INFO L475 AbstractCegarLoop]: Abstraction has 54677 states and 70311 transitions. [2019-09-07 18:34:47,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-07 18:34:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54677 states and 70311 transitions. [2019-09-07 18:34:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2019-09-07 18:34:47,320 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:47,321 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:34:47,322 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:47,323 INFO L82 PathProgramCache]: Analyzing trace with hash 917013424, now seen corresponding path program 1 times [2019-09-07 18:34:47,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:47,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:47,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:47,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:47,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 307 proven. 205 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 18:34:49,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:34:49,663 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:34:50,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:51,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 18:34:51,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:34:51,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:34:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 464 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-09-07 18:34:51,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:34:51,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 24 [2019-09-07 18:34:51,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-07 18:34:51,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-07 18:34:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2019-09-07 18:34:51,341 INFO L87 Difference]: Start difference. First operand 54677 states and 70311 transitions. Second operand 24 states. [2019-09-07 18:34:54,553 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-09-07 18:34:55,125 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-07 18:34:55,716 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-07 18:34:57,039 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-07 18:34:58,000 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-07 18:34:58,299 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-07 18:34:58,515 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-07 18:34:58,792 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-07 18:34:59,054 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-07 18:35:01,586 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 18:35:04,336 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-07 18:35:04,712 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-07 18:35:06,625 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-07 18:35:06,837 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-07 18:35:07,371 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-07 18:35:08,163 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 18:35:09,388 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 18:35:10,976 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-07 18:35:11,473 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 18:35:12,525 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2019-09-07 18:35:12,811 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 18:35:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:18,374 INFO L93 Difference]: Finished difference Result 117866 states and 167999 transitions. [2019-09-07 18:35:18,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2019-09-07 18:35:18,375 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 480 [2019-09-07 18:35:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:18,803 INFO L225 Difference]: With dead ends: 117866 [2019-09-07 18:35:18,804 INFO L226 Difference]: Without dead ends: 64187 [2019-09-07 18:35:18,949 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 490 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9364 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=3122, Invalid=20748, Unknown=0, NotChecked=0, Total=23870 [2019-09-07 18:35:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64187 states. [2019-09-07 18:35:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64187 to 57450. [2019-09-07 18:35:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57450 states. [2019-09-07 18:35:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57450 states to 57450 states and 73020 transitions. [2019-09-07 18:35:21,042 INFO L78 Accepts]: Start accepts. Automaton has 57450 states and 73020 transitions. Word has length 480 [2019-09-07 18:35:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:21,042 INFO L475 AbstractCegarLoop]: Abstraction has 57450 states and 73020 transitions. [2019-09-07 18:35:21,042 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-07 18:35:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 57450 states and 73020 transitions. [2019-09-07 18:35:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2019-09-07 18:35:21,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:21,118 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:35:21,118 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:21,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash -258066012, now seen corresponding path program 1 times [2019-09-07 18:35:21,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:21,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:21,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:21,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:21,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 369 proven. 415 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 18:35:22,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:35:22,310 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:35:22,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:22,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 18:35:22,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:35:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 655 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-07 18:35:22,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:35:22,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5] total 23 [2019-09-07 18:35:22,641 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 18:35:22,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 18:35:22,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2019-09-07 18:35:22,642 INFO L87 Difference]: Start difference. First operand 57450 states and 73020 transitions. Second operand 23 states. [2019-09-07 18:35:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:39,226 INFO L93 Difference]: Finished difference Result 115476 states and 165677 transitions. [2019-09-07 18:35:39,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-09-07 18:35:39,226 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 533 [2019-09-07 18:35:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:39,583 INFO L225 Difference]: With dead ends: 115476 [2019-09-07 18:35:39,584 INFO L226 Difference]: Without dead ends: 58175 [2019-09-07 18:35:39,702 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1400, Invalid=7342, Unknown=0, NotChecked=0, Total=8742 [2019-09-07 18:35:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58175 states. [2019-09-07 18:35:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58175 to 51849. [2019-09-07 18:35:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51849 states. [2019-09-07 18:35:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51849 states to 51849 states and 63446 transitions. [2019-09-07 18:35:41,138 INFO L78 Accepts]: Start accepts. Automaton has 51849 states and 63446 transitions. Word has length 533 [2019-09-07 18:35:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:41,139 INFO L475 AbstractCegarLoop]: Abstraction has 51849 states and 63446 transitions. [2019-09-07 18:35:41,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-07 18:35:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 51849 states and 63446 transitions. [2019-09-07 18:35:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2019-09-07 18:35:41,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:41,186 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:35:41,186 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1978524661, now seen corresponding path program 1 times [2019-09-07 18:35:41,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:41,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:41,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:41,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:41,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 402 proven. 397 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 18:35:42,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:35:42,498 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:35:42,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:42,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:35:42,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:35:42,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:35:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 665 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-09-07 18:35:42,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:35:42,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2019-09-07 18:35:42,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 18:35:42,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 18:35:42,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-09-07 18:35:42,891 INFO L87 Difference]: Start difference. First operand 51849 states and 63446 transitions. Second operand 21 states. [2019-09-07 18:35:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:55,783 INFO L93 Difference]: Finished difference Result 105164 states and 129279 transitions. [2019-09-07 18:35:55,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-09-07 18:35:55,784 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 538 [2019-09-07 18:35:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:55,967 INFO L225 Difference]: With dead ends: 105164 [2019-09-07 18:35:55,967 INFO L226 Difference]: Without dead ends: 52847 [2019-09-07 18:35:56,079 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3593 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1843, Invalid=8663, Unknown=0, NotChecked=0, Total=10506 [2019-09-07 18:35:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52847 states. [2019-09-07 18:35:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52847 to 50495. [2019-09-07 18:35:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50495 states. [2019-09-07 18:35:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50495 states to 50495 states and 59730 transitions. [2019-09-07 18:35:57,048 INFO L78 Accepts]: Start accepts. Automaton has 50495 states and 59730 transitions. Word has length 538 [2019-09-07 18:35:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:57,049 INFO L475 AbstractCegarLoop]: Abstraction has 50495 states and 59730 transitions. [2019-09-07 18:35:57,049 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 18:35:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 50495 states and 59730 transitions. [2019-09-07 18:35:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2019-09-07 18:35:57,092 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:57,093 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:35:57,093 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:57,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1635081231, now seen corresponding path program 1 times [2019-09-07 18:35:57,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:57,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:57,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:57,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:57,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 396 proven. 453 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-07 18:35:59,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:35:59,509 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:35:59,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:59,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 18:35:59,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:35:59,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:35:59,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:35:59,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:35:59,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:35:59,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:35:59,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:35:59,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:35:59,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:35:59,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 540 proven. 213 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 18:36:00,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:36:00,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-09-07 18:36:00,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-07 18:36:00,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-07 18:36:00,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2019-09-07 18:36:00,343 INFO L87 Difference]: Start difference. First operand 50495 states and 59730 transitions. Second operand 28 states. [2019-09-07 18:36:08,730 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-07 18:36:09,136 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 18:36:09,292 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-07 18:36:10,255 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-07 18:36:10,886 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-07 18:36:13,643 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-09-07 18:36:22,579 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-07 18:36:23,145 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-07 18:36:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:36:35,390 INFO L93 Difference]: Finished difference Result 97743 states and 123234 transitions. [2019-09-07 18:36:35,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2019-09-07 18:36:35,390 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 560 [2019-09-07 18:36:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:36:35,391 INFO L225 Difference]: With dead ends: 97743 [2019-09-07 18:36:35,391 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 18:36:35,559 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10452 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4830, Invalid=21902, Unknown=0, NotChecked=0, Total=26732 [2019-09-07 18:36:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 18:36:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 18:36:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 18:36:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 18:36:35,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 560 [2019-09-07 18:36:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:36:35,562 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 18:36:35,562 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-07 18:36:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 18:36:35,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 18:36:35,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 18:36:38,551 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-07 18:38:03,393 WARN L188 SmtUtils]: Spent 1.35 m on a formula simplification. DAG size of input: 5348 DAG size of output: 4067 [2019-09-07 18:39:22,006 WARN L188 SmtUtils]: Spent 1.31 m on a formula simplification. DAG size of input: 5348 DAG size of output: 4067 [2019-09-07 18:39:22,199 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 38 [2019-09-07 18:40:57,237 WARN L188 SmtUtils]: Spent 1.58 m on a formula simplification. DAG size of input: 1331 DAG size of output: 174