/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:10:32,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:10:32,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:10:32,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:10:33,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:10:33,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:10:33,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:10:33,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:10:33,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:10:33,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:10:33,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:10:33,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:10:33,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:10:33,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:10:33,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:10:33,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:10:33,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:10:33,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:10:33,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:10:33,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:10:33,063 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 [2019-11-06 19:10:33,098 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:10:33,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:10:33,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:10:33,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:10:33,100 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:10:33,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:10:33,101 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:10:33,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:10:33,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:10:33,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:10:33,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:10:33,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:10:33,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:10:33,102 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:10:33,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:10:33,102 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:10:33,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:10:33,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:10:33,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:10:33,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:10:33,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:10:33,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:10:33,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:10:33,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:10:33,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:10:33,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:10:33,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:10:33,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:10:33,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:10:33,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:10:33,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:10:33,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:10:33,405 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:10:33,405 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:10:33,406 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label59.c [2019-11-06 19:10:33,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4ae9ae0/ef63a08cff3347ea8c518130cab1a685/FLAG17761de10 [2019-11-06 19:10:34,115 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:10:34,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label59.c [2019-11-06 19:10:34,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4ae9ae0/ef63a08cff3347ea8c518130cab1a685/FLAG17761de10 [2019-11-06 19:10:34,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4ae9ae0/ef63a08cff3347ea8c518130cab1a685 [2019-11-06 19:10:34,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:10:34,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:10:34,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:10:34,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:10:34,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:10:34,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:10:34" (1/1) ... [2019-11-06 19:10:34,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8a311a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:34, skipping insertion in model container [2019-11-06 19:10:34,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:10:34" (1/1) ... [2019-11-06 19:10:34,334 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:10:34,399 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:10:35,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:10:35,130 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:10:35,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:10:35,377 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:10:35,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35 WrapperNode [2019-11-06 19:10:35,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:10:35,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:10:35,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:10:35,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:10:35,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (1/1) ... [2019-11-06 19:10:35,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:10:35,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:10:35,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:10:35,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:10:35,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (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 [2019-11-06 19:10:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:10:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:10:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:10:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:10:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:10:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:10:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:10:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:10:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:10:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:10:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:10:37,404 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:10:37,404 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:10:37,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:10:37 BoogieIcfgContainer [2019-11-06 19:10:37,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:10:37,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:10:37,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:10:37,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:10:37,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:10:34" (1/3) ... [2019-11-06 19:10:37,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1b8663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:10:37, skipping insertion in model container [2019-11-06 19:10:37,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:35" (2/3) ... [2019-11-06 19:10:37,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1b8663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:10:37, skipping insertion in model container [2019-11-06 19:10:37,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:10:37" (3/3) ... [2019-11-06 19:10:37,433 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label59.c [2019-11-06 19:10:37,448 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:10:37,460 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:10:37,473 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:10:37,528 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:10:37,528 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:10:37,530 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:10:37,531 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:10:37,531 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:10:37,531 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:10:37,531 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:10:37,532 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:10:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-11-06 19:10:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-06 19:10:37,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:37,597 INFO L410 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] [2019-11-06 19:10:37,599 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash -912328190, now seen corresponding path program 1 times [2019-11-06 19:10:37,616 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:37,616 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693992591] [2019-11-06 19:10:37,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:38,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693992591] [2019-11-06 19:10:38,174 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:10:38,175 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:10:38,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154962292] [2019-11-06 19:10:38,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:10:38,182 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:38,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:10:38,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:10:38,199 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-11-06 19:10:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:10:40,392 INFO L93 Difference]: Finished difference Result 793 states and 1394 transitions. [2019-11-06 19:10:40,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:10:40,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-11-06 19:10:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:10:40,413 INFO L225 Difference]: With dead ends: 793 [2019-11-06 19:10:40,413 INFO L226 Difference]: Without dead ends: 437 [2019-11-06 19:10:40,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:10:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-11-06 19:10:40,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 422. [2019-11-06 19:10:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2019-11-06 19:10:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 673 transitions. [2019-11-06 19:10:40,509 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 673 transitions. Word has length 65 [2019-11-06 19:10:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:10:40,510 INFO L462 AbstractCegarLoop]: Abstraction has 422 states and 673 transitions. [2019-11-06 19:10:40,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:10:40,511 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 673 transitions. [2019-11-06 19:10:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-06 19:10:40,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:40,518 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:10:40,518 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash -588923191, now seen corresponding path program 1 times [2019-11-06 19:10:40,519 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:40,519 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135858792] [2019-11-06 19:10:40,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:40,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135858792] [2019-11-06 19:10:40,864 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:10:40,865 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:10:40,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230178094] [2019-11-06 19:10:40,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:10:40,867 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:40,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:10:40,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:10:40,868 INFO L87 Difference]: Start difference. First operand 422 states and 673 transitions. Second operand 8 states. [2019-11-06 19:10:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:10:43,532 INFO L93 Difference]: Finished difference Result 1271 states and 2062 transitions. [2019-11-06 19:10:43,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 19:10:43,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2019-11-06 19:10:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:10:43,542 INFO L225 Difference]: With dead ends: 1271 [2019-11-06 19:10:43,542 INFO L226 Difference]: Without dead ends: 855 [2019-11-06 19:10:43,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:10:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2019-11-06 19:10:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 825. [2019-11-06 19:10:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2019-11-06 19:10:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1182 transitions. [2019-11-06 19:10:43,612 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1182 transitions. Word has length 134 [2019-11-06 19:10:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:10:43,613 INFO L462 AbstractCegarLoop]: Abstraction has 825 states and 1182 transitions. [2019-11-06 19:10:43,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:10:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1182 transitions. [2019-11-06 19:10:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-06 19:10:43,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:43,617 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:10:43,617 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:43,618 INFO L82 PathProgramCache]: Analyzing trace with hash 578512354, now seen corresponding path program 1 times [2019-11-06 19:10:43,618 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:43,618 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236628088] [2019-11-06 19:10:43,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:43,904 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236628088] [2019-11-06 19:10:43,904 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:10:43,904 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:10:43,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371089787] [2019-11-06 19:10:43,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:10:43,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:43,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:10:43,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:10:43,906 INFO L87 Difference]: Start difference. First operand 825 states and 1182 transitions. Second operand 9 states. [2019-11-06 19:10:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:10:46,937 INFO L93 Difference]: Finished difference Result 2481 states and 3696 transitions. [2019-11-06 19:10:46,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 19:10:46,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-11-06 19:10:46,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:10:46,954 INFO L225 Difference]: With dead ends: 2481 [2019-11-06 19:10:46,955 INFO L226 Difference]: Without dead ends: 1662 [2019-11-06 19:10:46,959 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:10:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2019-11-06 19:10:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1624. [2019-11-06 19:10:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2019-11-06 19:10:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2235 transitions. [2019-11-06 19:10:47,051 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2235 transitions. Word has length 137 [2019-11-06 19:10:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:10:47,053 INFO L462 AbstractCegarLoop]: Abstraction has 1624 states and 2235 transitions. [2019-11-06 19:10:47,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:10:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2235 transitions. [2019-11-06 19:10:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-06 19:10:47,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:47,064 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:10:47,065 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:47,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2098670063, now seen corresponding path program 1 times [2019-11-06 19:10:47,066 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:47,066 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950965159] [2019-11-06 19:10:47,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:47,445 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950965159] [2019-11-06 19:10:47,445 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451478553] [2019-11-06 19:10:47,445 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 [2019-11-06 19:10:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:47,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 19:10:47,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:10:47,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:10:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:47,766 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:10:47,766 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2019-11-06 19:10:47,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779345033] [2019-11-06 19:10:47,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:10:47,767 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:47,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:10:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:10:47,768 INFO L87 Difference]: Start difference. First operand 1624 states and 2235 transitions. Second operand 5 states. [2019-11-06 19:10:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:10:49,323 INFO L93 Difference]: Finished difference Result 3872 states and 5342 transitions. [2019-11-06 19:10:49,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:10:49,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-11-06 19:10:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:10:49,338 INFO L225 Difference]: With dead ends: 3872 [2019-11-06 19:10:49,338 INFO L226 Difference]: Without dead ends: 2254 [2019-11-06 19:10:49,343 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-06 19:10:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2019-11-06 19:10:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2212. [2019-11-06 19:10:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-11-06 19:10:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2894 transitions. [2019-11-06 19:10:49,424 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2894 transitions. Word has length 138 [2019-11-06 19:10:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:10:49,425 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 2894 transitions. [2019-11-06 19:10:49,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:10:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2894 transitions. [2019-11-06 19:10:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-06 19:10:49,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:49,428 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:10:49,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:10:49,634 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1755774456, now seen corresponding path program 1 times [2019-11-06 19:10:49,635 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:49,635 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836370650] [2019-11-06 19:10:49,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:49,885 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836370650] [2019-11-06 19:10:49,886 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:10:49,886 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 19:10:49,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647592624] [2019-11-06 19:10:49,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:10:49,887 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:10:49,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:10:49,887 INFO L87 Difference]: Start difference. First operand 2212 states and 2894 transitions. Second operand 5 states. [2019-11-06 19:10:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:10:51,652 INFO L93 Difference]: Finished difference Result 5570 states and 7636 transitions. [2019-11-06 19:10:51,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:10:51,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2019-11-06 19:10:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:10:51,672 INFO L225 Difference]: With dead ends: 5570 [2019-11-06 19:10:51,672 INFO L226 Difference]: Without dead ends: 3552 [2019-11-06 19:10:51,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:10:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2019-11-06 19:10:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3548. [2019-11-06 19:10:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3548 states. [2019-11-06 19:10:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4501 transitions. [2019-11-06 19:10:51,822 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4501 transitions. Word has length 196 [2019-11-06 19:10:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:10:51,823 INFO L462 AbstractCegarLoop]: Abstraction has 3548 states and 4501 transitions. [2019-11-06 19:10:51,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:10:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4501 transitions. [2019-11-06 19:10:51,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-06 19:10:51,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:51,828 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:10:51,829 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2033318321, now seen corresponding path program 1 times [2019-11-06 19:10:51,830 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:51,830 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279961886] [2019-11-06 19:10:51,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:52,087 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279961886] [2019-11-06 19:10:52,087 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202097347] [2019-11-06 19:10:52,087 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 [2019-11-06 19:10:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:52,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 19:10:52,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:10:52,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:10:52,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:10:54,135 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2019-11-06 19:10:54,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:10:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:55,145 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:10:55,145 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-06 19:10:55,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183678410] [2019-11-06 19:10:55,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 19:10:55,147 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:55,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 19:10:55,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2019-11-06 19:10:55,148 INFO L87 Difference]: Start difference. First operand 3548 states and 4501 transitions. Second operand 10 states. [2019-11-06 19:11:02,520 WARN L191 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 36 DAG size of output: 27