java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:04:54,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:04:54,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:04:54,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:04:54,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:04:54,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:04:54,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:04:54,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:04:54,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:04:54,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:04:54,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:04:54,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:04:54,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:04:54,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:04:54,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:04:54,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:04:54,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:04:54,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:04:54,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:04:54,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:04:54,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:04:54,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:04:54,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:04:54,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:04:54,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:04:54,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:04:54,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:04:54,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:04:54,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:04:54,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:04:54,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:04:54,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:04:54,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:04:54,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:04:54,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:04:54,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:04:54,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:04:54,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:04:54,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:04:54,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:04:54,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:04:54,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:04:54,234 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:04:54,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:04:54,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:04:54,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:04:54,240 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:04:54,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:04:54,241 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:04:54,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:04:54,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:04:54,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:04:54,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:04:54,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:04:54,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:04:54,242 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:04:54,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:04:54,242 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:04:54,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:04:54,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:04:54,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:04:54,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:04:54,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:04:54,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:54,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:04:54,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:04:54,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:04:54,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:04:54,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:04:54,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:04:54,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:04:54,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:04:54,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:04:54,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:04:54,604 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:04:54,605 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:04:54,605 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2019-10-13 18:04:54,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0d6fae3/0eb3811f83de4b88846007df6efc9b6c/FLAGba183fa8b [2019-10-13 18:04:55,382 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:04:55,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2019-10-13 18:04:55,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0d6fae3/0eb3811f83de4b88846007df6efc9b6c/FLAGba183fa8b [2019-10-13 18:04:55,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0d6fae3/0eb3811f83de4b88846007df6efc9b6c [2019-10-13 18:04:55,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:04:55,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:04:55,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:55,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:04:55,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:04:55,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:55" (1/1) ... [2019-10-13 18:04:55,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3686b925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:55, skipping insertion in model container [2019-10-13 18:04:55,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:55" (1/1) ... [2019-10-13 18:04:55,636 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:04:55,717 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:04:56,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:56,584 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:04:56,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:56,892 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:04:56,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56 WrapperNode [2019-10-13 18:04:56,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:56,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:04:56,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:04:56,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:04:56,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:56,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:56,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:56,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:57,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:57,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:57,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... [2019-10-13 18:04:57,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:04:57,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:04:57,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:04:57,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:04:57,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:04:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:04:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:04:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:04:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:04:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:04:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:04:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:04:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:04:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:04:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:04:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:04:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:04:59,721 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:04:59,721 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:04:59,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:59 BoogieIcfgContainer [2019-10-13 18:04:59,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:04:59,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:04:59,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:04:59,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:04:59,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:55" (1/3) ... [2019-10-13 18:04:59,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60692b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:59, skipping insertion in model container [2019-10-13 18:04:59,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:56" (2/3) ... [2019-10-13 18:04:59,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60692b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:59, skipping insertion in model container [2019-10-13 18:04:59,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:59" (3/3) ... [2019-10-13 18:04:59,733 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label13.c [2019-10-13 18:04:59,743 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:04:59,753 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:04:59,766 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:04:59,798 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:04:59,798 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:04:59,798 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:04:59,798 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:04:59,799 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:04:59,799 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:04:59,799 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:04:59,799 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:04:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-13 18:04:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 18:04:59,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:59,840 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:59,842 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:59,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1029807235, now seen corresponding path program 1 times [2019-10-13 18:04:59,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:59,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788219643] [2019-10-13 18:04:59,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:59,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:59,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:00,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788219643] [2019-10-13 18:05:00,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:05:00,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:05:00,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775562729] [2019-10-13 18:05:00,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:05:00,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:05:00,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:05:00,362 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-13 18:05:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:05,885 INFO L93 Difference]: Finished difference Result 1515 states and 2850 transitions. [2019-10-13 18:05:05,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:05:05,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-13 18:05:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:05,917 INFO L225 Difference]: With dead ends: 1515 [2019-10-13 18:05:05,917 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 18:05:05,929 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:05:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 18:05:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-13 18:05:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 18:05:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions. [2019-10-13 18:05:06,057 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 62 [2019-10-13 18:05:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:06,058 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions. [2019-10-13 18:05:06,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:05:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions. [2019-10-13 18:05:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-13 18:05:06,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:06,071 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:06,071 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:06,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1077850573, now seen corresponding path program 1 times [2019-10-13 18:05:06,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:06,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208665689] [2019-10-13 18:05:06,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:06,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:06,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:06,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208665689] [2019-10-13 18:05:06,561 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:05:06,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:05:06,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560771994] [2019-10-13 18:05:06,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:05:06,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:05:06,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:05:06,564 INFO L87 Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand 9 states. [2019-10-13 18:05:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:11,070 INFO L93 Difference]: Finished difference Result 3125 states and 5015 transitions. [2019-10-13 18:05:11,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:05:11,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-10-13 18:05:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:11,092 INFO L225 Difference]: With dead ends: 3125 [2019-10-13 18:05:11,092 INFO L226 Difference]: Without dead ends: 2100 [2019-10-13 18:05:11,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:05:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-10-13 18:05:11,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2069. [2019-10-13 18:05:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2019-10-13 18:05:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3146 transitions. [2019-10-13 18:05:11,206 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3146 transitions. Word has length 197 [2019-10-13 18:05:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:11,211 INFO L462 AbstractCegarLoop]: Abstraction has 2069 states and 3146 transitions. [2019-10-13 18:05:11,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:05:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3146 transitions. [2019-10-13 18:05:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 18:05:11,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:11,224 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:11,225 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -834056865, now seen corresponding path program 1 times [2019-10-13 18:05:11,226 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:11,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447950206] [2019-10-13 18:05:11,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:11,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:11,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 110 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 18:05:11,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447950206] [2019-10-13 18:05:11,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055181827] [2019-10-13 18:05:11,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:11,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:05:11,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 18:05:11,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:05:11,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-13 18:05:11,883 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461097078] [2019-10-13 18:05:11,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:05:11,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:11,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:05:11,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:11,886 INFO L87 Difference]: Start difference. First operand 2069 states and 3146 transitions. Second operand 5 states. [2019-10-13 18:05:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:14,746 INFO L93 Difference]: Finished difference Result 5192 states and 7967 transitions. [2019-10-13 18:05:14,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 18:05:14,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2019-10-13 18:05:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:14,779 INFO L225 Difference]: With dead ends: 5192 [2019-10-13 18:05:14,779 INFO L226 Difference]: Without dead ends: 3129 [2019-10-13 18:05:14,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:05:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2019-10-13 18:05:14,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3097. [2019-10-13 18:05:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2019-10-13 18:05:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3988 transitions. [2019-10-13 18:05:14,888 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 3988 transitions. Word has length 232 [2019-10-13 18:05:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:14,890 INFO L462 AbstractCegarLoop]: Abstraction has 3097 states and 3988 transitions. [2019-10-13 18:05:14,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:05:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 3988 transitions. [2019-10-13 18:05:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-13 18:05:14,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:14,899 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:15,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:15,106 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1253000061, now seen corresponding path program 1 times [2019-10-13 18:05:15,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:15,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132679640] [2019-10-13 18:05:15,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:15,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:15,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 238 proven. 71 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-10-13 18:05:15,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132679640] [2019-10-13 18:05:15,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202093620] [2019-10-13 18:05:15,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:15,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 18:05:15,870 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:05:15,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:05:15,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456759364] [2019-10-13 18:05:15,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:05:15,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:15,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:05:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:15,874 INFO L87 Difference]: Start difference. First operand 3097 states and 3988 transitions. Second operand 11 states. [2019-10-13 18:05:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:24,711 INFO L93 Difference]: Finished difference Result 10419 states and 14042 transitions. [2019-10-13 18:05:24,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 18:05:24,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2019-10-13 18:05:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:24,754 INFO L225 Difference]: With dead ends: 10419 [2019-10-13 18:05:24,755 INFO L226 Difference]: Without dead ends: 6317 [2019-10-13 18:05:24,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-10-13 18:05:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2019-10-13 18:05:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5938. [2019-10-13 18:05:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5938 states. [2019-10-13 18:05:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 7569 transitions. [2019-10-13 18:05:24,986 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 7569 transitions. Word has length 341 [2019-10-13 18:05:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:24,987 INFO L462 AbstractCegarLoop]: Abstraction has 5938 states and 7569 transitions. [2019-10-13 18:05:24,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:05:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 7569 transitions. [2019-10-13 18:05:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2019-10-13 18:05:24,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:24,998 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:25,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:25,202 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:25,203 INFO L82 PathProgramCache]: Analyzing trace with hash -490051524, now seen corresponding path program 1 times [2019-10-13 18:05:25,203 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:25,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512579918] [2019-10-13 18:05:25,203 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:25,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:25,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 246 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-13 18:05:25,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512579918] [2019-10-13 18:05:25,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648610554] [2019-10-13 18:05:25,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:25,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:25,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 18:05:26,033 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:05:26,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-10-13 18:05:26,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819695354] [2019-10-13 18:05:26,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:05:26,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:26,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:05:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:26,036 INFO L87 Difference]: Start difference. First operand 5938 states and 7569 transitions. Second operand 11 states. [2019-10-13 18:05:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:30,538 INFO L93 Difference]: Finished difference Result 13329 states and 17713 transitions. [2019-10-13 18:05:30,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:05:30,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 378 [2019-10-13 18:05:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:30,579 INFO L225 Difference]: With dead ends: 13329 [2019-10-13 18:05:30,579 INFO L226 Difference]: Without dead ends: 7352 [2019-10-13 18:05:30,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 385 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:05:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2019-10-13 18:05:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7310. [2019-10-13 18:05:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7310 states. [2019-10-13 18:05:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 8304 transitions. [2019-10-13 18:05:30,823 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 8304 transitions. Word has length 378 [2019-10-13 18:05:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:30,823 INFO L462 AbstractCegarLoop]: Abstraction has 7310 states and 8304 transitions. [2019-10-13 18:05:30,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:05:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 8304 transitions. [2019-10-13 18:05:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2019-10-13 18:05:30,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:30,840 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:05:31,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:31,044 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash -927205685, now seen corresponding path program 1 times [2019-10-13 18:05:31,046 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:31,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384346401] [2019-10-13 18:05:31,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:31,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:31,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat