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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:58:26,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:58:26,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:58:26,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:58:26,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:58:26,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:58:26,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:58:26,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:58:26,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:58:26,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:58:26,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:58:26,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:58:26,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:58:26,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:58:26,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:58:26,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:58:26,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:58:26,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:58:26,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:58:26,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:58:26,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:58:26,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:58:26,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:58:26,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:58:26,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 21:58:26,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 21:58:26,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 21:58:26,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 21:58:26,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 21:58:26,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 21:58:26,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:58:26,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:58:26,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:58:26,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:58:26,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:58:26,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:58:26,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:58:26,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:58:26,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:58:26,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:58:26,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:58:26,754 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 21:58:26,768 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:58:26,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:58:26,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:58:26,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:58:26,770 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:58:26,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:58:26,771 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:58:26,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:58:26,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:58:26,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:58:26,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:58:26,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:58:26,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:58:26,772 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:58:26,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:58:26,773 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:58:26,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:58:26,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:58:26,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:58:26,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:58:26,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:58:26,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:58:26,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:58:26,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:58:26,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:58:26,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:58:26,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:58:26,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:58:26,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:58:27,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:58:27,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:58:27,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:58:27,069 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:58:27,070 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:58:27,071 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2019-10-14 21:58:27,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa30d0d9f/dc1fe70ef1c84f98a863c1655be2ae4c/FLAGf31565e41 [2019-10-14 21:58:27,808 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:58:27,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2019-10-14 21:58:27,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa30d0d9f/dc1fe70ef1c84f98a863c1655be2ae4c/FLAGf31565e41 [2019-10-14 21:58:28,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa30d0d9f/dc1fe70ef1c84f98a863c1655be2ae4c [2019-10-14 21:58:28,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:58:28,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:58:28,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:58:28,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:58:28,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:58:28,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:28" (1/1) ... [2019-10-14 21:58:28,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70dea371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:28, skipping insertion in model container [2019-10-14 21:58:28,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:28" (1/1) ... [2019-10-14 21:58:28,030 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:58:28,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:58:29,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:58:29,013 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:58:29,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:58:29,199 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:58:29,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29 WrapperNode [2019-10-14 21:58:29,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:58:29,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:58:29,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:58:29,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:58:29,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (1/1) ... [2019-10-14 21:58:29,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:58:29,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:58:29,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:58:29,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:58:29,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (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 21:58:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:58:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:58:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 21:58:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:58:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 21:58:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:58:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 21:58:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 21:58:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:58:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:58:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:58:31,216 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:58:31,216 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 21:58:31,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:31 BoogieIcfgContainer [2019-10-14 21:58:31,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:58:31,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:58:31,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:58:31,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:58:31,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:58:28" (1/3) ... [2019-10-14 21:58:31,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3520ca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:31, skipping insertion in model container [2019-10-14 21:58:31,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:29" (2/3) ... [2019-10-14 21:58:31,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3520ca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:31, skipping insertion in model container [2019-10-14 21:58:31,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:31" (3/3) ... [2019-10-14 21:58:31,229 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label09.c [2019-10-14 21:58:31,244 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:58:31,257 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:58:31,272 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:58:31,326 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:58:31,326 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:58:31,326 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:58:31,327 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:58:31,327 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:58:31,327 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:58:31,327 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:58:31,328 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:58:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-14 21:58:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-14 21:58:31,395 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:31,397 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, 1, 1, 1, 1, 1] [2019-10-14 21:58:31,400 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash -869319573, now seen corresponding path program 1 times [2019-10-14 21:58:31,422 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:31,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586213304] [2019-10-14 21:58:31,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:31,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:31,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:31,951 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 21:58:31,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586213304] [2019-10-14 21:58:31,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:31,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:58:31,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829923110] [2019-10-14 21:58:31,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:58:31,961 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:31,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:58:31,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:58:31,983 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-14 21:58:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:35,358 INFO L93 Difference]: Finished difference Result 993 states and 1777 transitions. [2019-10-14 21:58:35,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:58:35,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-10-14 21:58:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:35,388 INFO L225 Difference]: With dead ends: 993 [2019-10-14 21:58:35,388 INFO L226 Difference]: Without dead ends: 632 [2019-10-14 21:58:35,398 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 21:58:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-14 21:58:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 628. [2019-10-14 21:58:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-14 21:58:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 886 transitions. [2019-10-14 21:58:35,509 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 886 transitions. Word has length 72 [2019-10-14 21:58:35,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:35,510 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 886 transitions. [2019-10-14 21:58:35,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:58:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 886 transitions. [2019-10-14 21:58:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 21:58:35,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:35,519 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, 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] [2019-10-14 21:58:35,519 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1437675110, now seen corresponding path program 1 times [2019-10-14 21:58:35,520 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:35,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24906484] [2019-10-14 21:58:35,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:35,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:35,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:35,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24906484] [2019-10-14 21:58:35,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:35,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 21:58:35,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394589187] [2019-10-14 21:58:35,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 21:58:35,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 21:58:35,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:58:35,908 INFO L87 Difference]: Start difference. First operand 628 states and 886 transitions. Second operand 8 states. [2019-10-14 21:58:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:38,758 INFO L93 Difference]: Finished difference Result 1873 states and 2696 transitions. [2019-10-14 21:58:38,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 21:58:38,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2019-10-14 21:58:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:38,770 INFO L225 Difference]: With dead ends: 1873 [2019-10-14 21:58:38,771 INFO L226 Difference]: Without dead ends: 1251 [2019-10-14 21:58:38,775 INFO L600 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 [2019-10-14 21:58:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-10-14 21:58:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1226. [2019-10-14 21:58:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2019-10-14 21:58:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1619 transitions. [2019-10-14 21:58:38,852 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1619 transitions. Word has length 152 [2019-10-14 21:58:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:38,853 INFO L462 AbstractCegarLoop]: Abstraction has 1226 states and 1619 transitions. [2019-10-14 21:58:38,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 21:58:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1619 transitions. [2019-10-14 21:58:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-14 21:58:38,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:38,861 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, 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] [2019-10-14 21:58:38,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1147537460, now seen corresponding path program 1 times [2019-10-14 21:58:38,862 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:38,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80362992] [2019-10-14 21:58:38,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:38,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:38,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:39,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80362992] [2019-10-14 21:58:39,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333168855] [2019-10-14 21:58:39,280 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 21:58:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:39,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:58:39,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:39,661 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:58:39,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-10-14 21:58:39,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698114315] [2019-10-14 21:58:39,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:58:39,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:58:39,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:58:39,674 INFO L87 Difference]: Start difference. First operand 1226 states and 1619 transitions. Second operand 3 states. [2019-10-14 21:58:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:40,847 INFO L93 Difference]: Finished difference Result 3612 states and 4883 transitions. [2019-10-14 21:58:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:58:40,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2019-10-14 21:58:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:40,868 INFO L225 Difference]: With dead ends: 3612 [2019-10-14 21:58:40,868 INFO L226 Difference]: Without dead ends: 2392 [2019-10-14 21:58:40,872 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:58:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2019-10-14 21:58:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2189. [2019-10-14 21:58:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2189 states. [2019-10-14 21:58:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2912 transitions. [2019-10-14 21:58:40,969 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 2912 transitions. Word has length 203 [2019-10-14 21:58:40,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:40,971 INFO L462 AbstractCegarLoop]: Abstraction has 2189 states and 2912 transitions. [2019-10-14 21:58:40,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:58:40,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 2912 transitions. [2019-10-14 21:58:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-14 21:58:40,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:40,981 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:41,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:41,197 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:41,198 INFO L82 PathProgramCache]: Analyzing trace with hash 331775261, now seen corresponding path program 1 times [2019-10-14 21:58:41,198 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:41,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992341920] [2019-10-14 21:58:41,199 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:41,199 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:41,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 21:58:41,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992341920] [2019-10-14 21:58:41,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80059922] [2019-10-14 21:58:41,522 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 21:58:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:41,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 21:58:41,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-14 21:58:41,728 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:58:41,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-14 21:58:41,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89808445] [2019-10-14 21:58:41,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:58:41,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:41,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:58:41,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 21:58:41,730 INFO L87 Difference]: Start difference. First operand 2189 states and 2912 transitions. Second operand 5 states. [2019-10-14 21:58:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:43,270 INFO L93 Difference]: Finished difference Result 5406 states and 7546 transitions. [2019-10-14 21:58:43,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:58:43,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2019-10-14 21:58:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:43,292 INFO L225 Difference]: With dead ends: 5406 [2019-10-14 21:58:43,293 INFO L226 Difference]: Without dead ends: 3223 [2019-10-14 21:58:43,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 21:58:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2019-10-14 21:58:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3183. [2019-10-14 21:58:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3183 states. [2019-10-14 21:58:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4270 transitions. [2019-10-14 21:58:43,438 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4270 transitions. Word has length 238 [2019-10-14 21:58:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:43,439 INFO L462 AbstractCegarLoop]: Abstraction has 3183 states and 4270 transitions. [2019-10-14 21:58:43,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:58:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4270 transitions. [2019-10-14 21:58:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-14 21:58:43,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:43,446 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:43,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:43,651 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:43,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1251397776, now seen corresponding path program 1 times [2019-10-14 21:58:43,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:43,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092796782] [2019-10-14 21:58:43,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:43,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:43,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:58:43,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092796782] [2019-10-14 21:58:43,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100823978] [2019-10-14 21:58:43,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:44,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:58:44,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:58:44,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:58:44,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 21:58:44,161 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864404077] [2019-10-14 21:58:44,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:58:44,162 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:44,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:58:44,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:58:44,163 INFO L87 Difference]: Start difference. First operand 3183 states and 4270 transitions. Second operand 3 states. [2019-10-14 21:58:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:45,344 INFO L93 Difference]: Finished difference Result 7147 states and 9731 transitions. [2019-10-14 21:58:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:58:45,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2019-10-14 21:58:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:45,370 INFO L225 Difference]: With dead ends: 7147 [2019-10-14 21:58:45,371 INFO L226 Difference]: Without dead ends: 4158 [2019-10-14 21:58:45,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 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 21:58:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2019-10-14 21:58:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3953. [2019-10-14 21:58:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2019-10-14 21:58:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5305 transitions. [2019-10-14 21:58:45,518 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5305 transitions. Word has length 239 [2019-10-14 21:58:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:45,522 INFO L462 AbstractCegarLoop]: Abstraction has 3953 states and 5305 transitions. [2019-10-14 21:58:45,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:58:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5305 transitions. [2019-10-14 21:58:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-14 21:58:45,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:45,535 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:45,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:45,740 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:45,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1992228476, now seen corresponding path program 1 times [2019-10-14 21:58:45,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:45,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404339383] [2019-10-14 21:58:45,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:45,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:45,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 7 proven. 129 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-14 21:58:46,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404339383] [2019-10-14 21:58:46,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197886830] [2019-10-14 21:58:46,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:46,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 21:58:46,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:46,544 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:58:46,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2019-10-14 21:58:46,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066950082] [2019-10-14 21:58:46,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 21:58:46,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:46,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 21:58:46,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-10-14 21:58:46,546 INFO L87 Difference]: Start difference. First operand 3953 states and 5305 transitions. Second operand 14 states. [2019-10-14 21:58:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:58,858 INFO L93 Difference]: Finished difference Result 14359 states and 21427 transitions. [2019-10-14 21:58:58,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2019-10-14 21:58:58,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 284 [2019-10-14 21:58:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:58,922 INFO L225 Difference]: With dead ends: 14359 [2019-10-14 21:58:58,922 INFO L226 Difference]: Without dead ends: 10600 [2019-10-14 21:58:58,941 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2613 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1213, Invalid=5927, Unknown=0, NotChecked=0, Total=7140 [2019-10-14 21:58:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2019-10-14 21:58:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 9889. [2019-10-14 21:58:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9889 states. [2019-10-14 21:58:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 13534 transitions. [2019-10-14 21:58:59,308 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 13534 transitions. Word has length 284 [2019-10-14 21:58:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:59,309 INFO L462 AbstractCegarLoop]: Abstraction has 9889 states and 13534 transitions. [2019-10-14 21:58:59,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 21:58:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 13534 transitions. [2019-10-14 21:58:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-10-14 21:58:59,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:59,325 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:59,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:59,537 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:59,538 INFO L82 PathProgramCache]: Analyzing trace with hash -588146601, now seen corresponding path program 1 times [2019-10-14 21:58:59,538 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:59,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427998172] [2019-10-14 21:58:59,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:59,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:59,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:59:00,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427998172] [2019-10-14 21:59:00,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219350379] [2019-10-14 21:59:00,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:00,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:00,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:59:00,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:00,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2019-10-14 21:59:00,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882986659] [2019-10-14 21:59:00,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:00,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:00,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:00,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:00,246 INFO L87 Difference]: Start difference. First operand 9889 states and 13534 transitions. Second operand 3 states. [2019-10-14 21:59:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:01,411 INFO L93 Difference]: Finished difference Result 22828 states and 31926 transitions. [2019-10-14 21:59:01,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:01,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2019-10-14 21:59:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:01,473 INFO L225 Difference]: With dead ends: 22828 [2019-10-14 21:59:01,474 INFO L226 Difference]: Without dead ends: 13323 [2019-10-14 21:59:01,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13323 states. [2019-10-14 21:59:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13323 to 11805. [2019-10-14 21:59:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11805 states. [2019-10-14 21:59:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 15835 transitions. [2019-10-14 21:59:01,944 INFO L78 Accepts]: Start accepts. Automaton has 11805 states and 15835 transitions. Word has length 289 [2019-10-14 21:59:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:01,944 INFO L462 AbstractCegarLoop]: Abstraction has 11805 states and 15835 transitions. [2019-10-14 21:59:01,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states and 15835 transitions. [2019-10-14 21:59:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-10-14 21:59:01,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:01,973 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:59:02,178 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:02,179 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash -247122996, now seen corresponding path program 1 times [2019-10-14 21:59:02,180 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:02,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636742002] [2019-10-14 21:59:02,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:02,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:02,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat