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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:03:53,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:03:53,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:03:53,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:03:53,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:03:53,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:03:53,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:03:53,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:03:53,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:03:53,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:03:53,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:03:54,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:03:54,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:03:54,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:03:54,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:03:54,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:03:54,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:03:54,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:03:54,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:03:54,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:03:54,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:03:54,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:03:54,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:03:54,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:03:54,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:03:54,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:03:54,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:03:54,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:03:54,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:03:54,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:03:54,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:03:54,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:03:54,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:03:54,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:03:54,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:03:54,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:03:54,052 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 [2019-10-14 22:03:54,069 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:03:54,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:03:54,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:03:54,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:03:54,071 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:03:54,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:03:54,071 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:03:54,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:03:54,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:03:54,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:03:54,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:03:54,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:03:54,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:03:54,073 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:03:54,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:03:54,073 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:03:54,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:03:54,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:03:54,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:03:54,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:03:54,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:03:54,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:03:54,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:03:54,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:03:54,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:03:54,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:03:54,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:03:54,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:03:54,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:03:54,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:03:54,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:03:54,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:03:54,396 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:03:54,396 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:03:54,397 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2019-10-14 22:03:54,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8f031d0/4386f779c3f94d84b75fc32542d36b2b/FLAG4cdddfb7c [2019-10-14 22:03:55,105 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:03:55,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2019-10-14 22:03:55,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8f031d0/4386f779c3f94d84b75fc32542d36b2b/FLAG4cdddfb7c [2019-10-14 22:03:55,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8f031d0/4386f779c3f94d84b75fc32542d36b2b [2019-10-14 22:03:55,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:03:55,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:03:55,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:55,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:03:55,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:03:55,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:55" (1/1) ... [2019-10-14 22:03:55,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:55, skipping insertion in model container [2019-10-14 22:03:55,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:55" (1/1) ... [2019-10-14 22:03:55,340 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:03:55,428 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:03:56,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:56,505 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:03:56,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:56,735 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:03:56,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56 WrapperNode [2019-10-14 22:03:56,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:56,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:03:56,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:03:56,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:03:56,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (1/1) ... [2019-10-14 22:03:56,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:03:56,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:03:56,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:03:56,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:03:56,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (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 [2019-10-14 22:03:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:03:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:03:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:03:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:03:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:03:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:03:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:03:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:03:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:03:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:03:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:03:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:03:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:03:59,243 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:03:59,244 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:03:59,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:59 BoogieIcfgContainer [2019-10-14 22:03:59,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:03:59,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:03:59,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:03:59,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:03:59,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:55" (1/3) ... [2019-10-14 22:03:59,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81b5ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:59, skipping insertion in model container [2019-10-14 22:03:59,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:56" (2/3) ... [2019-10-14 22:03:59,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81b5ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:59, skipping insertion in model container [2019-10-14 22:03:59,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:59" (3/3) ... [2019-10-14 22:03:59,254 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label13.c [2019-10-14 22:03:59,264 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:03:59,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:03:59,285 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:03:59,316 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:03:59,316 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:03:59,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:03:59,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:03:59,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:03:59,317 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:03:59,317 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:03:59,317 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:03:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-14 22:03:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 22:03:59,354 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:59,355 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, 1] [2019-10-14 22:03:59,357 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:59,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1029807235, now seen corresponding path program 1 times [2019-10-14 22:03:59,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:59,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975380325] [2019-10-14 22:03:59,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:59,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:59,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:59,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975380325] [2019-10-14 22:03:59,781 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:59,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:03:59,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662568012] [2019-10-14 22:03:59,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:03:59,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:59,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:03:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:03:59,805 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-14 22:04:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:05,005 INFO L93 Difference]: Finished difference Result 1515 states and 2850 transitions. [2019-10-14 22:04:05,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:04:05,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-14 22:04:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:05,042 INFO L225 Difference]: With dead ends: 1515 [2019-10-14 22:04:05,042 INFO L226 Difference]: Without dead ends: 1038 [2019-10-14 22:04:05,052 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 [2019-10-14 22:04:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-14 22:04:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-14 22:04:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-14 22:04:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions. [2019-10-14 22:04:05,169 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 62 [2019-10-14 22:04:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:05,170 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions. [2019-10-14 22:04:05,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:04:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions. [2019-10-14 22:04:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-14 22:04:05,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:05,183 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, 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] [2019-10-14 22:04:05,183 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1077850573, now seen corresponding path program 1 times [2019-10-14 22:04:05,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:05,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7010828] [2019-10-14 22:04:05,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:05,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:05,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:04:05,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7010828] [2019-10-14 22:04:05,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:04:05,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:04:05,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663112409] [2019-10-14 22:04:05,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:04:05,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:04:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:04:05,641 INFO L87 Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand 9 states. [2019-10-14 22:04:10,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:10,537 INFO L93 Difference]: Finished difference Result 3125 states and 5015 transitions. [2019-10-14 22:04:10,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:04:10,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-10-14 22:04:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:10,559 INFO L225 Difference]: With dead ends: 3125 [2019-10-14 22:04:10,559 INFO L226 Difference]: Without dead ends: 2100 [2019-10-14 22:04:10,564 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 [2019-10-14 22:04:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-10-14 22:04:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2069. [2019-10-14 22:04:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2019-10-14 22:04:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3146 transitions. [2019-10-14 22:04:10,676 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3146 transitions. Word has length 197 [2019-10-14 22:04:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:10,678 INFO L462 AbstractCegarLoop]: Abstraction has 2069 states and 3146 transitions. [2019-10-14 22:04:10,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:04:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3146 transitions. [2019-10-14 22:04:10,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-14 22:04:10,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:10,692 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, 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] [2019-10-14 22:04:10,692 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash -834056865, now seen corresponding path program 1 times [2019-10-14 22:04:10,694 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:10,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051986103] [2019-10-14 22:04:10,694 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:10,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:10,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 110 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 22:04:11,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051986103] [2019-10-14 22:04:11,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427682190] [2019-10-14 22:04:11,119 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 [2019-10-14 22:04:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:11,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 22:04:11,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-14 22:04:11,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:04:11,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-14 22:04:11,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902074033] [2019-10-14 22:04:11,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:04:11,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:11,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:04:11,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:04:11,361 INFO L87 Difference]: Start difference. First operand 2069 states and 3146 transitions. Second operand 5 states. [2019-10-14 22:04:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:14,170 INFO L93 Difference]: Finished difference Result 5192 states and 7967 transitions. [2019-10-14 22:04:14,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 22:04:14,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2019-10-14 22:04:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:14,192 INFO L225 Difference]: With dead ends: 5192 [2019-10-14 22:04:14,192 INFO L226 Difference]: Without dead ends: 3129 [2019-10-14 22:04:14,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:04:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2019-10-14 22:04:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3097. [2019-10-14 22:04:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2019-10-14 22:04:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3988 transitions. [2019-10-14 22:04:14,302 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 3988 transitions. Word has length 232 [2019-10-14 22:04:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:14,304 INFO L462 AbstractCegarLoop]: Abstraction has 3097 states and 3988 transitions. [2019-10-14 22:04:14,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:04:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 3988 transitions. [2019-10-14 22:04:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-14 22:04:14,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:14,312 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, 4, 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] [2019-10-14 22:04:14,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:14,516 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1253000061, now seen corresponding path program 1 times [2019-10-14 22:04:14,518 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:14,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886553304] [2019-10-14 22:04:14,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:14,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:14,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 238 proven. 71 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-10-14 22:04:15,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886553304] [2019-10-14 22:04:15,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390179755] [2019-10-14 22:04:15,002 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 [2019-10-14 22:04:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:15,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:15,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-14 22:04:15,343 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:04:15,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-14 22:04:15,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794882857] [2019-10-14 22:04:15,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:04:15,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:15,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:04:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:04:15,346 INFO L87 Difference]: Start difference. First operand 3097 states and 3988 transitions. Second operand 11 states. [2019-10-14 22:04:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:24,083 INFO L93 Difference]: Finished difference Result 10419 states and 14042 transitions. [2019-10-14 22:04:24,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 22:04:24,085 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2019-10-14 22:04:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:24,120 INFO L225 Difference]: With dead ends: 10419 [2019-10-14 22:04:24,121 INFO L226 Difference]: Without dead ends: 6317 [2019-10-14 22:04:24,132 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-10-14 22:04:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2019-10-14 22:04:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5938. [2019-10-14 22:04:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5938 states. [2019-10-14 22:04:24,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 7569 transitions. [2019-10-14 22:04:24,296 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 7569 transitions. Word has length 341 [2019-10-14 22:04:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:24,297 INFO L462 AbstractCegarLoop]: Abstraction has 5938 states and 7569 transitions. [2019-10-14 22:04:24,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:04:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 7569 transitions. [2019-10-14 22:04:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2019-10-14 22:04:24,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:24,307 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, 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, 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] [2019-10-14 22:04:24,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:24,516 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:24,516 INFO L82 PathProgramCache]: Analyzing trace with hash -490051524, now seen corresponding path program 1 times [2019-10-14 22:04:24,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:24,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473483373] [2019-10-14 22:04:24,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:24,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:24,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 246 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-14 22:04:25,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473483373] [2019-10-14 22:04:25,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594308607] [2019-10-14 22:04:25,066 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 [2019-10-14 22:04:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:25,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:25,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-14 22:04:25,276 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:04:25,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-10-14 22:04:25,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161557018] [2019-10-14 22:04:25,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:04:25,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:25,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:04:25,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:04:25,279 INFO L87 Difference]: Start difference. First operand 5938 states and 7569 transitions. Second operand 11 states. [2019-10-14 22:04:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:29,892 INFO L93 Difference]: Finished difference Result 13329 states and 17713 transitions. [2019-10-14 22:04:29,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:04:29,893 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 378 [2019-10-14 22:04:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:29,929 INFO L225 Difference]: With dead ends: 13329 [2019-10-14 22:04:29,930 INFO L226 Difference]: Without dead ends: 7352 [2019-10-14 22:04:29,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 385 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:04:29,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2019-10-14 22:04:30,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7310. [2019-10-14 22:04:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7310 states. [2019-10-14 22:04:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 8304 transitions. [2019-10-14 22:04:30,209 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 8304 transitions. Word has length 378 [2019-10-14 22:04:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:30,211 INFO L462 AbstractCegarLoop]: Abstraction has 7310 states and 8304 transitions. [2019-10-14 22:04:30,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:04:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 8304 transitions. [2019-10-14 22:04:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2019-10-14 22:04:30,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:30,232 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, 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, 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] [2019-10-14 22:04:30,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:30,439 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash -927205685, now seen corresponding path program 1 times [2019-10-14 22:04:30,447 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:30,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404564491] [2019-10-14 22:04:30,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:30,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:30,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 325 proven. 240 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2019-10-14 22:04:31,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404564491] [2019-10-14 22:04:31,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108633140] [2019-10-14 22:04:31,235 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 [2019-10-14 22:04:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:31,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:31,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 724 proven. 2 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-10-14 22:04:31,619 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:04:31,620 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-10-14 22:04:31,620 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987966964] [2019-10-14 22:04:31,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 22:04:31,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:31,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 22:04:31,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:04:31,622 INFO L87 Difference]: Start difference. First operand 7310 states and 8304 transitions. Second operand 12 states.