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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:03:38,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:03:38,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:03:38,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:03:38,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:03:38,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:03:38,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:03:38,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:03:38,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:03:38,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:03:38,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:03:38,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:03:38,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:03:38,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:03:38,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:03:38,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:03:38,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:03:38,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:03:38,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:03:38,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:03:38,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:03:38,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:03:38,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:03:38,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:03:38,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:03:38,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:03:38,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:03:38,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:03:38,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:03:38,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:03:38,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:03:38,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:03:38,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:03:38,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:03:38,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:03:38,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:03:38,321 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 22:03:38,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:03:38,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:03:38,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:03:38,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:03:38,347 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:03:38,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:03:38,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:03:38,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:03:38,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:03:38,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:03:38,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:03:38,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:03:38,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:03:38,349 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:03:38,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:03:38,349 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:03:38,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:03:38,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:03:38,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:03:38,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:03:38,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:03:38,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:03:38,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:03:38,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:03:38,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:03:38,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:03:38,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:03:38,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:03:38,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:03:38,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:03:38,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:03:38,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:03:38,644 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:03:38,645 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:03:38,645 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2019-10-14 22:03:38,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e8d4533/d13692597de9464cbd9158a57c955084/FLAG91101ef01 [2019-10-14 22:03:39,376 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:03:39,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2019-10-14 22:03:39,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e8d4533/d13692597de9464cbd9158a57c955084/FLAG91101ef01 [2019-10-14 22:03:39,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e8d4533/d13692597de9464cbd9158a57c955084 [2019-10-14 22:03:39,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:03:39,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:03:39,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:39,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:03:39,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:03:39,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:39" (1/1) ... [2019-10-14 22:03:39,576 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 14.10 10:03:39, skipping insertion in model container [2019-10-14 22:03:39,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:39" (1/1) ... [2019-10-14 22:03:39,583 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:03:39,660 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:03:40,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:40,447 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:03:40,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:40,730 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:03:40,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40 WrapperNode [2019-10-14 22:03:40,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:40,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:03:40,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:03:40,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:03:40,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (1/1) ... [2019-10-14 22:03:40,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:03:40,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:03:40,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:03:40,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:03:40,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (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 22:03:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:03:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:03:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:03:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:03:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:03:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:03:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:03:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:03:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:03:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:03:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:03:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:03:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:03:43,431 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:03:43,431 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:03:43,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:43 BoogieIcfgContainer [2019-10-14 22:03:43,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:03:43,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:03:43,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:03:43,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:03:43,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:39" (1/3) ... [2019-10-14 22:03:43,438 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 14.10 10:03:43, skipping insertion in model container [2019-10-14 22:03:43,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:40" (2/3) ... [2019-10-14 22:03:43,439 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 14.10 10:03:43, skipping insertion in model container [2019-10-14 22:03:43,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:43" (3/3) ... [2019-10-14 22:03:43,441 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label02.c [2019-10-14 22:03:43,450 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:03:43,459 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:03:43,471 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:03:43,501 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:03:43,501 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:03:43,502 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:03:43,502 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:03:43,502 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:03:43,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:03:43,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:03:43,503 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:03:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-14 22:03:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-14 22:03:43,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:43,546 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, 1, 1, 1, 1, 1] [2019-10-14 22:03:43,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:43,556 INFO L82 PathProgramCache]: Analyzing trace with hash -64019710, now seen corresponding path program 1 times [2019-10-14 22:03:43,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:43,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175096813] [2019-10-14 22:03:43,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:43,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:43,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:44,057 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 22:03:44,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175096813] [2019-10-14 22:03:44,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:44,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:03:44,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905980480] [2019-10-14 22:03:44,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:03:44,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:44,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:03:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:03:44,081 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-14 22:03:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:49,250 INFO L93 Difference]: Finished difference Result 1530 states and 2865 transitions. [2019-10-14 22:03:49,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:03:49,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-10-14 22:03:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:49,286 INFO L225 Difference]: With dead ends: 1530 [2019-10-14 22:03:49,286 INFO L226 Difference]: Without dead ends: 1038 [2019-10-14 22:03:49,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:03:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-14 22:03:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-14 22:03:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-14 22:03:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1751 transitions. [2019-10-14 22:03:49,442 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1751 transitions. Word has length 67 [2019-10-14 22:03:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:49,443 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1751 transitions. [2019-10-14 22:03:49,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:03:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1751 transitions. [2019-10-14 22:03:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 22:03:49,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:49,451 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:49,451 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:49,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2118195102, now seen corresponding path program 1 times [2019-10-14 22:03:49,452 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:49,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121070477] [2019-10-14 22:03:49,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:49,453 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:49,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:49,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121070477] [2019-10-14 22:03:49,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:49,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:03:49,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480670151] [2019-10-14 22:03:49,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:03:49,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:49,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:03:49,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:03:49,786 INFO L87 Difference]: Start difference. First operand 1031 states and 1751 transitions. Second operand 9 states. [2019-10-14 22:03:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:53,773 INFO L93 Difference]: Finished difference Result 3130 states and 5428 transitions. [2019-10-14 22:03:53,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:03:53,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-14 22:03:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:53,792 INFO L225 Difference]: With dead ends: 3130 [2019-10-14 22:03:53,792 INFO L226 Difference]: Without dead ends: 2105 [2019-10-14 22:03:53,798 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 22:03:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2019-10-14 22:03:53,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2073. [2019-10-14 22:03:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2019-10-14 22:03:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3396 transitions. [2019-10-14 22:03:53,899 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3396 transitions. Word has length 137 [2019-10-14 22:03:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:53,900 INFO L462 AbstractCegarLoop]: Abstraction has 2073 states and 3396 transitions. [2019-10-14 22:03:53,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:03:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3396 transitions. [2019-10-14 22:03:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-14 22:03:53,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:53,905 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:53,905 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:53,905 INFO L82 PathProgramCache]: Analyzing trace with hash -287717798, now seen corresponding path program 1 times [2019-10-14 22:03:53,906 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:53,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795599837] [2019-10-14 22:03:53,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:53,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:53,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:54,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795599837] [2019-10-14 22:03:54,291 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:54,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:03:54,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903878664] [2019-10-14 22:03:54,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:03:54,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:54,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:03:54,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:03:54,294 INFO L87 Difference]: Start difference. First operand 2073 states and 3396 transitions. Second operand 9 states. [2019-10-14 22:03:59,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:59,501 INFO L93 Difference]: Finished difference Result 7992 states and 13707 transitions. [2019-10-14 22:03:59,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 22:03:59,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2019-10-14 22:03:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:59,542 INFO L225 Difference]: With dead ends: 7992 [2019-10-14 22:03:59,542 INFO L226 Difference]: Without dead ends: 5925 [2019-10-14 22:03:59,549 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:03:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2019-10-14 22:03:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5898. [2019-10-14 22:03:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2019-10-14 22:03:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8925 transitions. [2019-10-14 22:03:59,722 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8925 transitions. Word has length 165 [2019-10-14 22:03:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:59,723 INFO L462 AbstractCegarLoop]: Abstraction has 5898 states and 8925 transitions. [2019-10-14 22:03:59,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:03:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8925 transitions. [2019-10-14 22:03:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-14 22:03:59,728 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:59,728 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, 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] [2019-10-14 22:03:59,728 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1076433194, now seen corresponding path program 1 times [2019-10-14 22:03:59,729 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:59,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610246925] [2019-10-14 22:03:59,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:59,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:59,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:04:00,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610246925] [2019-10-14 22:04:00,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:04:00,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:04:00,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030034247] [2019-10-14 22:04:00,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:04:00,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:04:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:04:00,065 INFO L87 Difference]: Start difference. First operand 5898 states and 8925 transitions. Second operand 9 states. [2019-10-14 22:04:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:03,631 INFO L93 Difference]: Finished difference Result 14973 states and 23288 transitions. [2019-10-14 22:04:03,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:04:03,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2019-10-14 22:04:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:03,676 INFO L225 Difference]: With dead ends: 14973 [2019-10-14 22:04:03,676 INFO L226 Difference]: Without dead ends: 9081 [2019-10-14 22:04:03,692 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 22:04:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2019-10-14 22:04:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9011. [2019-10-14 22:04:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9011 states. [2019-10-14 22:04:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 11771 transitions. [2019-10-14 22:04:03,926 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 11771 transitions. Word has length 205 [2019-10-14 22:04:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:03,928 INFO L462 AbstractCegarLoop]: Abstraction has 9011 states and 11771 transitions. [2019-10-14 22:04:03,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:04:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 11771 transitions. [2019-10-14 22:04:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2019-10-14 22:04:03,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:03,936 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:04:03,937 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:03,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1486171337, now seen corresponding path program 1 times [2019-10-14 22:04:03,938 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:03,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78363875] [2019-10-14 22:04:03,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:03,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:03,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-14 22:04:04,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78363875] [2019-10-14 22:04:04,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287399374] [2019-10-14 22:04:04,414 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 22:04:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:04,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:04,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-14 22:04:04,742 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:04:04,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:04:04,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070012820] [2019-10-14 22:04:04,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:04:04,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:04:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:04:04,745 INFO L87 Difference]: Start difference. First operand 9011 states and 11771 transitions. Second operand 3 states. [2019-10-14 22:04:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:07,119 INFO L93 Difference]: Finished difference Result 21065 states and 27828 transitions. [2019-10-14 22:04:07,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:04:07,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 386 [2019-10-14 22:04:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:07,191 INFO L225 Difference]: With dead ends: 21065 [2019-10-14 22:04:07,191 INFO L226 Difference]: Without dead ends: 12060 [2019-10-14 22:04:07,211 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:04:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2019-10-14 22:04:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 11382. [2019-10-14 22:04:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11382 states. [2019-10-14 22:04:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11382 states to 11382 states and 14474 transitions. [2019-10-14 22:04:07,503 INFO L78 Accepts]: Start accepts. Automaton has 11382 states and 14474 transitions. Word has length 386 [2019-10-14 22:04:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:07,504 INFO L462 AbstractCegarLoop]: Abstraction has 11382 states and 14474 transitions. [2019-10-14 22:04:07,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:04:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11382 states and 14474 transitions. [2019-10-14 22:04:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2019-10-14 22:04:07,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:07,524 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:04:07,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:07,731 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash -431149942, now seen corresponding path program 1 times [2019-10-14 22:04:07,732 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:07,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250961377] [2019-10-14 22:04:07,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:07,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:07,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:04:08,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250961377] [2019-10-14 22:04:08,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517794193] [2019-10-14 22:04:08,546 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 22:04:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:08,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:08,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:04:08,851 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:04:08,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-14 22:04:08,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319819542] [2019-10-14 22:04:08,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:04:08,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:04:08,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:04:08,854 INFO L87 Difference]: Start difference. First operand 11382 states and 14474 transitions. Second operand 11 states.