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/Problem16_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:04:52,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:04:52,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:04:52,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:04:52,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:04:52,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:04:52,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:04:52,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:04:52,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:04:52,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:04:52,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:04:52,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:04:52,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:04:52,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:04:52,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:04:52,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:04:52,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:04:52,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:04:52,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:04:52,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:04:52,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:04:52,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:04:52,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:04:52,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:04:52,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:04:52,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:04:52,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:04:52,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:04:52,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:04:52,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:04:52,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:04:52,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:04:52,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:04:52,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:04:52,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:04:52,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:04:52,081 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 [2019-10-13 18:04:52,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:04:52,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:04:52,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:04:52,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:04:52,106 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:04:52,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:04:52,106 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:04:52,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:04:52,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:04:52,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:04:52,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:04:52,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:04:52,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:04:52,109 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:04:52,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:04:52,109 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:04:52,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:04:52,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:04:52,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:04:52,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:04:52,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:04:52,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:52,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:04:52,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:04:52,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:04:52,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:04:52,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:04:52,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:04:52,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:04:52,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:04:52,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:04:52,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:04:52,416 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:04:52,417 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:04:52,417 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label11.c [2019-10-13 18:04:52,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bb922f4/8e1f007070a14f0ea8f7356c95e89700/FLAGcc828fe09 [2019-10-13 18:04:53,177 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:04:53,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label11.c [2019-10-13 18:04:53,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bb922f4/8e1f007070a14f0ea8f7356c95e89700/FLAGcc828fe09 [2019-10-13 18:04:53,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bb922f4/8e1f007070a14f0ea8f7356c95e89700 [2019-10-13 18:04:53,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:04:53,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:04:53,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:53,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:04:53,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:04:53,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5f6572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53, skipping insertion in model container [2019-10-13 18:04:53,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:04:53,472 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:04:54,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:54,349 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:04:54,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:54,711 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:04:54,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54 WrapperNode [2019-10-13 18:04:54,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:54,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:04:54,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:04:54,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:04:54,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (1/1) ... [2019-10-13 18:04:54,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:04:54,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:04:54,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:04:54,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:04:54,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (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 [2019-10-13 18:04:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:04:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:04:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:04:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:04:54,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:04:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:04:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:04:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:04:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:04:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:04:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:04:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:04:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:04:57,358 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:04:57,359 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:04:57,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:57 BoogieIcfgContainer [2019-10-13 18:04:57,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:04:57,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:04:57,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:04:57,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:04:57,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:53" (1/3) ... [2019-10-13 18:04:57,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2344b4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:57, skipping insertion in model container [2019-10-13 18:04:57,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:54" (2/3) ... [2019-10-13 18:04:57,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2344b4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:57, skipping insertion in model container [2019-10-13 18:04:57,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:57" (3/3) ... [2019-10-13 18:04:57,372 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label11.c [2019-10-13 18:04:57,382 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:04:57,397 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:04:57,409 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:04:57,456 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:04:57,456 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:04:57,456 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:04:57,456 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:04:57,456 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:04:57,456 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:04:57,457 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:04:57,457 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:04:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-13 18:04:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 18:04:57,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:57,511 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:57,513 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:57,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1003051062, now seen corresponding path program 1 times [2019-10-13 18:04:57,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:57,530 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175096813] [2019-10-13 18:04:57,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:57,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:57,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:57,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175096813] [2019-10-13 18:04:57,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:57,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:04:57,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534791713] [2019-10-13 18:04:57,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:57,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:57,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:04:57,993 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-13 18:05:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:03,348 INFO L93 Difference]: Finished difference Result 1515 states and 2850 transitions. [2019-10-13 18:05:03,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:05:03,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-10-13 18:05:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:03,384 INFO L225 Difference]: With dead ends: 1515 [2019-10-13 18:05:03,385 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 18:05:03,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:05:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 18:05:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-13 18:05:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 18:05:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions. [2019-10-13 18:05:03,515 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 61 [2019-10-13 18:05:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:03,516 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions. [2019-10-13 18:05:03,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:05:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions. [2019-10-13 18:05:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 18:05:03,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:03,529 INFO L380 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, 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] [2019-10-13 18:05:03,530 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:03,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1732161147, now seen corresponding path program 1 times [2019-10-13 18:05:03,530 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:03,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435232663] [2019-10-13 18:05:03,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:03,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:03,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:04,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435232663] [2019-10-13 18:05:04,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:05:04,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:05:04,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442000881] [2019-10-13 18:05:04,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:05:04,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:04,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:05:04,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:05:04,078 INFO L87 Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand 9 states. [2019-10-13 18:05:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:08,282 INFO L93 Difference]: Finished difference Result 3125 states and 5015 transitions. [2019-10-13 18:05:08,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:05:08,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2019-10-13 18:05:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:08,308 INFO L225 Difference]: With dead ends: 3125 [2019-10-13 18:05:08,308 INFO L226 Difference]: Without dead ends: 2100 [2019-10-13 18:05:08,314 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:05:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-10-13 18:05:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2069. [2019-10-13 18:05:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2019-10-13 18:05:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3146 transitions. [2019-10-13 18:05:08,423 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3146 transitions. Word has length 196 [2019-10-13 18:05:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:08,424 INFO L462 AbstractCegarLoop]: Abstraction has 2069 states and 3146 transitions. [2019-10-13 18:05:08,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:05:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3146 transitions. [2019-10-13 18:05:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 18:05:08,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:08,432 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:08,433 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:08,433 INFO L82 PathProgramCache]: Analyzing trace with hash -801492122, now seen corresponding path program 1 times [2019-10-13 18:05:08,434 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:08,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569984844] [2019-10-13 18:05:08,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:08,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:08,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 18:05:08,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569984844] [2019-10-13 18:05:08,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948223047] [2019-10-13 18:05:08,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:08,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:05:08,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 18:05:09,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:05:09,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-13 18:05:09,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380286629] [2019-10-13 18:05:09,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:05:09,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:09,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:05:09,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:09,032 INFO L87 Difference]: Start difference. First operand 2069 states and 3146 transitions. Second operand 5 states. [2019-10-13 18:05:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:11,668 INFO L93 Difference]: Finished difference Result 5192 states and 7967 transitions. [2019-10-13 18:05:11,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 18:05:11,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2019-10-13 18:05:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:11,690 INFO L225 Difference]: With dead ends: 5192 [2019-10-13 18:05:11,691 INFO L226 Difference]: Without dead ends: 3129 [2019-10-13 18:05:11,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:05:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2019-10-13 18:05:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3097. [2019-10-13 18:05:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2019-10-13 18:05:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3988 transitions. [2019-10-13 18:05:11,801 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 3988 transitions. Word has length 231 [2019-10-13 18:05:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:11,803 INFO L462 AbstractCegarLoop]: Abstraction has 3097 states and 3988 transitions. [2019-10-13 18:05:11,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:05:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 3988 transitions. [2019-10-13 18:05:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-10-13 18:05:11,813 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:11,814 INFO L380 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:12,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:12,028 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -318977725, now seen corresponding path program 1 times [2019-10-13 18:05:12,029 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:12,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683050233] [2019-10-13 18:05:12,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:12,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:12,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 235 proven. 71 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-10-13 18:05:12,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683050233] [2019-10-13 18:05:12,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129162528] [2019-10-13 18:05:12,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:12,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:12,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 18:05:12,773 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:05:12,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:05:12,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666594519] [2019-10-13 18:05:12,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:05:12,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:12,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:05:12,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:12,777 INFO L87 Difference]: Start difference. First operand 3097 states and 3988 transitions. Second operand 11 states. [2019-10-13 18:05:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:21,221 INFO L93 Difference]: Finished difference Result 10419 states and 14042 transitions. [2019-10-13 18:05:21,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 18:05:21,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 340 [2019-10-13 18:05:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:21,265 INFO L225 Difference]: With dead ends: 10419 [2019-10-13 18:05:21,265 INFO L226 Difference]: Without dead ends: 6317 [2019-10-13 18:05:21,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-10-13 18:05:21,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2019-10-13 18:05:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5938. [2019-10-13 18:05:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5938 states. [2019-10-13 18:05:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 7569 transitions. [2019-10-13 18:05:21,482 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 7569 transitions. Word has length 340 [2019-10-13 18:05:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:21,483 INFO L462 AbstractCegarLoop]: Abstraction has 5938 states and 7569 transitions. [2019-10-13 18:05:21,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:05:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 7569 transitions. [2019-10-13 18:05:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2019-10-13 18:05:21,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:21,494 INFO L380 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:21,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:21,707 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1913009258, now seen corresponding path program 1 times [2019-10-13 18:05:21,709 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:21,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279483134] [2019-10-13 18:05:21,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:21,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:21,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 243 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-13 18:05:22,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279483134] [2019-10-13 18:05:22,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359671689] [2019-10-13 18:05:22,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:22,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:22,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 18:05:22,331 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:05:22,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-10-13 18:05:22,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625147844] [2019-10-13 18:05:22,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:05:22,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:05:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:22,334 INFO L87 Difference]: Start difference. First operand 5938 states and 7569 transitions. Second operand 11 states. [2019-10-13 18:05:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:26,617 INFO L93 Difference]: Finished difference Result 13329 states and 17713 transitions. [2019-10-13 18:05:26,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:05:26,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 377 [2019-10-13 18:05:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:26,660 INFO L225 Difference]: With dead ends: 13329 [2019-10-13 18:05:26,660 INFO L226 Difference]: Without dead ends: 7352 [2019-10-13 18:05:26,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:05:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2019-10-13 18:05:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7310. [2019-10-13 18:05:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7310 states. [2019-10-13 18:05:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 8304 transitions. [2019-10-13 18:05:26,915 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 8304 transitions. Word has length 377 [2019-10-13 18:05:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:26,917 INFO L462 AbstractCegarLoop]: Abstraction has 7310 states and 8304 transitions. [2019-10-13 18:05:26,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:05:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 8304 transitions. [2019-10-13 18:05:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2019-10-13 18:05:26,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:26,936 INFO L380 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:27,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:27,151 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:27,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:27,165 INFO L82 PathProgramCache]: Analyzing trace with hash -857763430, now seen corresponding path program 1 times [2019-10-13 18:05:27,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:27,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131855693] [2019-10-13 18:05:27,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:27,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:27,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 321 proven. 240 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2019-10-13 18:05:28,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131855693] [2019-10-13 18:05:28,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052603046] [2019-10-13 18:05:28,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:28,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:28,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 721 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2019-10-13 18:05:28,585 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:05:28,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-10-13 18:05:28,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338630133] [2019-10-13 18:05:28,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 18:05:28,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:28,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 18:05:28,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:05:28,588 INFO L87 Difference]: Start difference. First operand 7310 states and 8304 transitions. Second operand 12 states.