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/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 17:57:47,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 17:57:47,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 17:57:47,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 17:57:47,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 17:57:47,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 17:57:47,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 17:57:47,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 17:57:47,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 17:57:47,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 17:57:47,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 17:57:47,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 17:57:47,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 17:57:47,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 17:57:47,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 17:57:47,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 17:57:47,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 17:57:47,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 17:57:47,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 17:57:47,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 17:57:47,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 17:57:47,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 17:57:47,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 17:57:47,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 17:57:47,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 17:57:47,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 17:57:47,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 17:57:47,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 17:57:47,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 17:57:47,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 17:57:47,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 17:57:47,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 17:57:47,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 17:57:47,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 17:57:47,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 17:57:47,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 17:57:47,602 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 17:57:47,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 17:57:47,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 17:57:47,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 17:57:47,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 17:57:47,618 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 17:57:47,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 17:57:47,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 17:57:47,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 17:57:47,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 17:57:47,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 17:57:47,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 17:57:47,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 17:57:47,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 17:57:47,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 17:57:47,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 17:57:47,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 17:57:47,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 17:57:47,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 17:57:47,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 17:57:47,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 17:57:47,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 17:57:47,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:57:47,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 17:57:47,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 17:57:47,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 17:57:47,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 17:57:47,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 17:57:47,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 17:57:47,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 17:57:47,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 17:57:47,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 17:57:47,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 17:57:47,951 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 17:57:47,951 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 17:57:47,952 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2019-10-13 17:57:48,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120f18d0b/31d9e67069bc40cab0b39c6809cfb817/FLAG9d49d497b [2019-10-13 17:57:48,617 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 17:57:48,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2019-10-13 17:57:48,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120f18d0b/31d9e67069bc40cab0b39c6809cfb817/FLAG9d49d497b [2019-10-13 17:57:48,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120f18d0b/31d9e67069bc40cab0b39c6809cfb817 [2019-10-13 17:57:48,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 17:57:48,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 17:57:48,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 17:57:48,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 17:57:48,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 17:57:48,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:57:48" (1/1) ... [2019-10-13 17:57:48,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2706ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:48, skipping insertion in model container [2019-10-13 17:57:48,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:57:48" (1/1) ... [2019-10-13 17:57:48,859 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 17:57:48,932 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 17:57:49,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:57:49,522 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 17:57:49,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:57:49,666 INFO L192 MainTranslator]: Completed translation [2019-10-13 17:57:49,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49 WrapperNode [2019-10-13 17:57:49,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 17:57:49,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 17:57:49,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 17:57:49,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 17:57:49,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (1/1) ... [2019-10-13 17:57:49,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 17:57:49,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 17:57:49,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 17:57:49,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 17:57:49,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (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 17:57:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 17:57:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 17:57:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 17:57:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 17:57:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 17:57:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 17:57:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 17:57:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 17:57:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 17:57:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 17:57:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 17:57:51,331 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 17:57:51,331 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 17:57:51,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:57:51 BoogieIcfgContainer [2019-10-13 17:57:51,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 17:57:51,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 17:57:51,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 17:57:51,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 17:57:51,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:57:48" (1/3) ... [2019-10-13 17:57:51,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6c828d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:57:51, skipping insertion in model container [2019-10-13 17:57:51,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:49" (2/3) ... [2019-10-13 17:57:51,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6c828d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:57:51, skipping insertion in model container [2019-10-13 17:57:51,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:57:51" (3/3) ... [2019-10-13 17:57:51,342 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2019-10-13 17:57:51,352 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 17:57:51,361 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 17:57:51,373 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 17:57:51,402 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 17:57:51,403 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 17:57:51,403 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 17:57:51,403 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 17:57:51,403 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 17:57:51,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 17:57:51,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 17:57:51,404 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 17:57:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-13 17:57:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 17:57:51,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:57:51,442 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] [2019-10-13 17:57:51,444 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:57:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:57:51,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1614181646, now seen corresponding path program 1 times [2019-10-13 17:57:51,459 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:57:51,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221427508] [2019-10-13 17:57:51,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:51,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:51,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:57:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:51,912 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 17:57:51,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221427508] [2019-10-13 17:57:51,914 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:57:51,914 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 17:57:51,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935279232] [2019-10-13 17:57:51,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:57:51,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:57:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:57:51,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 17:57:51,948 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2019-10-13 17:57:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:57:54,125 INFO L93 Difference]: Finished difference Result 730 states and 1301 transitions. [2019-10-13 17:57:54,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 17:57:54,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-10-13 17:57:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:57:54,143 INFO L225 Difference]: With dead ends: 730 [2019-10-13 17:57:54,144 INFO L226 Difference]: Without dead ends: 447 [2019-10-13 17:57:54,152 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 17:57:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-13 17:57:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2019-10-13 17:57:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-13 17:57:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions. [2019-10-13 17:57:54,237 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 61 [2019-10-13 17:57:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:57:54,238 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 672 transitions. [2019-10-13 17:57:54,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:57:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions. [2019-10-13 17:57:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 17:57:54,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:57:54,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:54,249 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:57:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:57:54,250 INFO L82 PathProgramCache]: Analyzing trace with hash 562524769, now seen corresponding path program 1 times [2019-10-13 17:57:54,250 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:57:54,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400420410] [2019-10-13 17:57:54,251 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:54,251 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:54,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:57:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:57:54,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400420410] [2019-10-13 17:57:54,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097377825] [2019-10-13 17:57:54,658 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 17:57:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:54,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 17:57:54,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:57:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:57:54,946 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:57:54,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-10-13 17:57:54,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935929953] [2019-10-13 17:57:54,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:57:54,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:57:54,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:57:54,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 17:57:54,952 INFO L87 Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 5 states. [2019-10-13 17:57:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:57:56,068 INFO L93 Difference]: Finished difference Result 1031 states and 1586 transitions. [2019-10-13 17:57:56,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 17:57:56,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2019-10-13 17:57:56,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:57:56,074 INFO L225 Difference]: With dead ends: 1031 [2019-10-13 17:57:56,075 INFO L226 Difference]: Without dead ends: 596 [2019-10-13 17:57:56,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:57:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2019-10-13 17:57:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 590. [2019-10-13 17:57:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-13 17:57:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 865 transitions. [2019-10-13 17:57:56,117 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 865 transitions. Word has length 180 [2019-10-13 17:57:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:57:56,118 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 865 transitions. [2019-10-13 17:57:56,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:57:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 865 transitions. [2019-10-13 17:57:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 17:57:56,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:57:56,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:56,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:57:56,328 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:57:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:57:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1013955258, now seen corresponding path program 1 times [2019-10-13 17:57:56,330 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:57:56,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432074212] [2019-10-13 17:57:56,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:56,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:56,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:57:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:57:56,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432074212] [2019-10-13 17:57:56,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:57:56,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 17:57:56,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365803310] [2019-10-13 17:57:56,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 17:57:56,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:57:56,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 17:57:56,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 17:57:56,783 INFO L87 Difference]: Start difference. First operand 590 states and 865 transitions. Second operand 9 states. [2019-10-13 17:57:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:57:58,772 INFO L93 Difference]: Finished difference Result 1939 states and 3010 transitions. [2019-10-13 17:57:58,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 17:57:58,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-13 17:57:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:57:58,782 INFO L225 Difference]: With dead ends: 1939 [2019-10-13 17:57:58,782 INFO L226 Difference]: Without dead ends: 1355 [2019-10-13 17:57:58,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 17:57:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2019-10-13 17:57:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 894. [2019-10-13 17:57:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2019-10-13 17:57:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1190 transitions. [2019-10-13 17:57:58,834 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1190 transitions. Word has length 187 [2019-10-13 17:57:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:57:58,835 INFO L462 AbstractCegarLoop]: Abstraction has 894 states and 1190 transitions. [2019-10-13 17:57:58,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 17:57:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1190 transitions. [2019-10-13 17:57:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 17:57:58,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:57:58,843 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, 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] [2019-10-13 17:57:58,844 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:57:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:57:58,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1373393371, now seen corresponding path program 1 times [2019-10-13 17:57:58,844 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:57:58,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205905910] [2019-10-13 17:57:58,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:58,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:58,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:57:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 17:57:59,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205905910] [2019-10-13 17:57:59,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296341896] [2019-10-13 17:57:59,407 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 17:57:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:59,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:57:59,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:57:59,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:57:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:57:59,702 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:57:59,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-10-13 17:57:59,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329096908] [2019-10-13 17:57:59,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 17:57:59,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:57:59,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 17:57:59,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-10-13 17:57:59,706 INFO L87 Difference]: Start difference. First operand 894 states and 1190 transitions. Second operand 15 states. [2019-10-13 17:58:00,818 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-10-13 17:58:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:58:04,486 INFO L93 Difference]: Finished difference Result 2114 states and 2917 transitions. [2019-10-13 17:58:04,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 17:58:04,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 250 [2019-10-13 17:58:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:58:04,495 INFO L225 Difference]: With dead ends: 2114 [2019-10-13 17:58:04,496 INFO L226 Difference]: Without dead ends: 1369 [2019-10-13 17:58:04,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 17:58:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2019-10-13 17:58:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1051. [2019-10-13 17:58:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2019-10-13 17:58:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1323 transitions. [2019-10-13 17:58:04,552 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1323 transitions. Word has length 250 [2019-10-13 17:58:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:58:04,553 INFO L462 AbstractCegarLoop]: Abstraction has 1051 states and 1323 transitions. [2019-10-13 17:58:04,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 17:58:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1323 transitions. [2019-10-13 17:58:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2019-10-13 17:58:04,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:58:04,559 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, 2, 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] [2019-10-13 17:58:04,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:58:04,763 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:58:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:58:04,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1409344854, now seen corresponding path program 1 times [2019-10-13 17:58:04,764 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:58:04,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40500501] [2019-10-13 17:58:04,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:58:04,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:58:04,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:58:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 17:58:05,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40500501] [2019-10-13 17:58:05,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962680543] [2019-10-13 17:58:05,137 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 17:58:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:05,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:58:05,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:58:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:58:05,325 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:58:05,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 17:58:05,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712374522] [2019-10-13 17:58:05,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 17:58:05,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:58:05,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 17:58:05,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:58:05,328 INFO L87 Difference]: Start difference. First operand 1051 states and 1323 transitions. Second operand 11 states. [2019-10-13 17:58:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:58:08,506 INFO L93 Difference]: Finished difference Result 3243 states and 4611 transitions. [2019-10-13 17:58:08,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 17:58:08,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 265 [2019-10-13 17:58:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:58:08,518 INFO L225 Difference]: With dead ends: 3243 [2019-10-13 17:58:08,518 INFO L226 Difference]: Without dead ends: 1258 [2019-10-13 17:58:08,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2019-10-13 17:58:08,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2019-10-13 17:58:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1228. [2019-10-13 17:58:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2019-10-13 17:58:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1503 transitions. [2019-10-13 17:58:08,589 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1503 transitions. Word has length 265 [2019-10-13 17:58:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:58:08,590 INFO L462 AbstractCegarLoop]: Abstraction has 1228 states and 1503 transitions. [2019-10-13 17:58:08,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 17:58:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1503 transitions. [2019-10-13 17:58:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2019-10-13 17:58:08,597 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:58:08,598 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 17:58:08,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:58:08,811 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:58:08,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:58:08,812 INFO L82 PathProgramCache]: Analyzing trace with hash -73832098, now seen corresponding path program 1 times [2019-10-13 17:58:08,812 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:58:08,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570458018] [2019-10-13 17:58:08,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:58:08,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:58:08,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:58:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 108 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 17:58:09,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570458018] [2019-10-13 17:58:09,086 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554883723] [2019-10-13 17:58:09,086 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 [2019-10-13 17:58:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:09,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 17:58:09,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:58:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 17:58:09,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:58:09,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-13 17:58:09,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665706853] [2019-10-13 17:58:09,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:58:09,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:58:09,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:58:09,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:58:09,404 INFO L87 Difference]: Start difference. First operand 1228 states and 1503 transitions. Second operand 5 states. [2019-10-13 17:58:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:58:10,390 INFO L93 Difference]: Finished difference Result 2281 states and 2775 transitions. [2019-10-13 17:58:10,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 17:58:10,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2019-10-13 17:58:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:58:10,399 INFO L225 Difference]: With dead ends: 2281 [2019-10-13 17:58:10,399 INFO L226 Difference]: Without dead ends: 1218 [2019-10-13 17:58:10,403 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 17:58:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-10-13 17:58:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1196. [2019-10-13 17:58:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2019-10-13 17:58:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1370 transitions. [2019-10-13 17:58:10,434 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1370 transitions. Word has length 275 [2019-10-13 17:58:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:58:10,434 INFO L462 AbstractCegarLoop]: Abstraction has 1196 states and 1370 transitions. [2019-10-13 17:58:10,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:58:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1370 transitions. [2019-10-13 17:58:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2019-10-13 17:58:10,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:58:10,442 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:58:10,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:58:10,647 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:58:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:58:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -467387859, now seen corresponding path program 1 times [2019-10-13 17:58:10,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:58:10,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900211071] [2019-10-13 17:58:10,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:58:10,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:58:10,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:58:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 293 proven. 65 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 17:58:12,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900211071] [2019-10-13 17:58:12,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574257202] [2019-10-13 17:58:12,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-10-13 17:58:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:58:12,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 17:58:12,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:58:12,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:12,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:24,538 WARN L191 SmtUtils]: Spent 12.16 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-13 17:58:24,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 17:58:24,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:58:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 17:58:24,921 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:58:24,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 24 [2019-10-13 17:58:24,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294379654] [2019-10-13 17:58:24,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 17:58:24,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:58:24,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 17:58:24,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2019-10-13 17:58:24,924 INFO L87 Difference]: Start difference. First operand 1196 states and 1370 transitions. Second operand 24 states. [2019-10-13 17:58:26,737 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-10-13 17:58:27,643 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32