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/Problem14_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:03:27,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:03:27,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:03:27,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:03:27,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:03:27,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:03:27,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:03:27,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:03:27,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:03:27,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:03:27,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:03:27,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:03:27,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:03:27,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:03:27,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:03:27,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:03:27,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:03:27,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:03:27,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:03:27,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:03:27,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:03:27,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:03:27,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:03:27,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:03:27,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:03:27,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:03:27,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:03:27,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:03:27,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:03:27,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:03:27,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:03:27,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:03:27,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:03:27,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:03:27,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:03:27,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:03:27,347 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 18:03:27,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:03:27,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:03:27,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:03:27,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:03:27,373 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:03:27,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:03:27,374 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:03:27,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:03:27,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:03:27,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:03:27,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:03:27,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:03:27,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:03:27,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:03:27,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:03:27,377 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:03:27,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:03:27,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:03:27,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:03:27,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:03:27,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:03:27,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:03:27,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:03:27,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:03:27,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:03:27,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:03:27,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:03:27,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:03:27,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:03:27,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:03:27,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:03:27,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:03:27,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:03:27,686 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:03:27,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2019-10-13 18:03:27,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb26bdc64/57ffb8e80fff4ca39c38ad957755abc0/FLAGb72d31a13 [2019-10-13 18:03:28,365 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:03:28,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2019-10-13 18:03:28,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb26bdc64/57ffb8e80fff4ca39c38ad957755abc0/FLAGb72d31a13 [2019-10-13 18:03:28,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb26bdc64/57ffb8e80fff4ca39c38ad957755abc0 [2019-10-13 18:03:28,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:03:28,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:03:28,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:03:28,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:03:28,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:03:28,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:28" (1/1) ... [2019-10-13 18:03:28,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc152e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:28, skipping insertion in model container [2019-10-13 18:03:28,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:28" (1/1) ... [2019-10-13 18:03:28,621 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:03:28,682 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:03:29,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:03:29,233 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:03:29,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:03:29,422 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:03:29,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29 WrapperNode [2019-10-13 18:03:29,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:03:29,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:03:29,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:03:29,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:03:29,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... [2019-10-13 18:03:29,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:03:29,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:03:29,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:03:29,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:03:29,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:03:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:03:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:03:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:03:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:03:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:03:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:03:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:03:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:03:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:03:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:03:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:03:31,434 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:03:31,435 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:03:31,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:31 BoogieIcfgContainer [2019-10-13 18:03:31,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:03:31,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:03:31,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:03:31,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:03:31,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:03:28" (1/3) ... [2019-10-13 18:03:31,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5509b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:31, skipping insertion in model container [2019-10-13 18:03:31,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:29" (2/3) ... [2019-10-13 18:03:31,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5509b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:31, skipping insertion in model container [2019-10-13 18:03:31,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:31" (3/3) ... [2019-10-13 18:03:31,461 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label50.c [2019-10-13 18:03:31,473 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:03:31,482 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:03:31,494 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:03:31,532 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:03:31,532 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:03:31,532 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:03:31,533 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:03:31,533 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:03:31,533 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:03:31,533 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:03:31,533 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:03:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-13 18:03:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 18:03:31,587 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:31,588 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] [2019-10-13 18:03:31,591 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1557712066, now seen corresponding path program 1 times [2019-10-13 18:03:31,613 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:31,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288786461] [2019-10-13 18:03:31,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:31,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:31,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:31,998 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 18:03:31,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288786461] [2019-10-13 18:03:32,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:03:32,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:03:32,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811438303] [2019-10-13 18:03:32,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:03:32,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:32,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:03:32,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:03:32,026 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2019-10-13 18:03:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:34,791 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2019-10-13 18:03:34,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:03:34,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-13 18:03:34,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:34,816 INFO L225 Difference]: With dead ends: 886 [2019-10-13 18:03:34,817 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 18:03:34,827 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 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 18:03:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 18:03:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2019-10-13 18:03:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-13 18:03:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2019-10-13 18:03:34,932 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 43 [2019-10-13 18:03:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:34,933 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2019-10-13 18:03:34,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:03:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2019-10-13 18:03:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 18:03:34,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:34,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:34,941 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1883069890, now seen corresponding path program 1 times [2019-10-13 18:03:34,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:34,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723009692] [2019-10-13 18:03:34,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:34,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:34,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:35,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723009692] [2019-10-13 18:03:35,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:03:35,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:03:35,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664395777] [2019-10-13 18:03:35,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:03:35,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:35,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:03:35,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:03:35,366 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand 9 states. [2019-10-13 18:03:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:37,274 INFO L93 Difference]: Finished difference Result 1320 states and 2174 transitions. [2019-10-13 18:03:37,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:03:37,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2019-10-13 18:03:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:37,282 INFO L225 Difference]: With dead ends: 1320 [2019-10-13 18:03:37,282 INFO L226 Difference]: Without dead ends: 768 [2019-10-13 18:03:37,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:03:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-13 18:03:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 566. [2019-10-13 18:03:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-13 18:03:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 819 transitions. [2019-10-13 18:03:37,328 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 819 transitions. Word has length 129 [2019-10-13 18:03:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:37,329 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 819 transitions. [2019-10-13 18:03:37,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:03:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 819 transitions. [2019-10-13 18:03:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 18:03:37,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:37,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:37,336 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1079220531, now seen corresponding path program 1 times [2019-10-13 18:03:37,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:37,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405619431] [2019-10-13 18:03:37,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:37,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:37,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:37,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405619431] [2019-10-13 18:03:37,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153024062] [2019-10-13 18:03:37,618 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 18:03:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:37,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:37,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:37,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:37,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:03:37,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442367633] [2019-10-13 18:03:37,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:37,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:37,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:37,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:37,807 INFO L87 Difference]: Start difference. First operand 566 states and 819 transitions. Second operand 3 states. [2019-10-13 18:03:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:38,738 INFO L93 Difference]: Finished difference Result 1680 states and 2467 transitions. [2019-10-13 18:03:38,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:38,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-13 18:03:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:38,751 INFO L225 Difference]: With dead ends: 1680 [2019-10-13 18:03:38,751 INFO L226 Difference]: Without dead ends: 1120 [2019-10-13 18:03:38,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2019-10-13 18:03:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 934. [2019-10-13 18:03:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2019-10-13 18:03:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1279 transitions. [2019-10-13 18:03:38,804 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1279 transitions. Word has length 138 [2019-10-13 18:03:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:38,804 INFO L462 AbstractCegarLoop]: Abstraction has 934 states and 1279 transitions. [2019-10-13 18:03:38,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1279 transitions. [2019-10-13 18:03:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 18:03:38,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:38,817 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:03:39,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:39,023 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:39,024 INFO L82 PathProgramCache]: Analyzing trace with hash 209442382, now seen corresponding path program 1 times [2019-10-13 18:03:39,025 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:39,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138305240] [2019-10-13 18:03:39,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:39,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:39,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 18:03:39,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138305240] [2019-10-13 18:03:39,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745557083] [2019-10-13 18:03:39,335 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 18:03:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:39,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 18:03:39,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:39,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:03:39,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110722684] [2019-10-13 18:03:39,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:39,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:39,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:39,562 INFO L87 Difference]: Start difference. First operand 934 states and 1279 transitions. Second operand 3 states. [2019-10-13 18:03:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:40,526 INFO L93 Difference]: Finished difference Result 2414 states and 3392 transitions. [2019-10-13 18:03:40,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:40,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2019-10-13 18:03:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:40,536 INFO L225 Difference]: With dead ends: 2414 [2019-10-13 18:03:40,537 INFO L226 Difference]: Without dead ends: 1486 [2019-10-13 18:03:40,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2019-10-13 18:03:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1304. [2019-10-13 18:03:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-10-13 18:03:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1748 transitions. [2019-10-13 18:03:40,582 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1748 transitions. Word has length 241 [2019-10-13 18:03:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:40,583 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 1748 transitions. [2019-10-13 18:03:40,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1748 transitions. [2019-10-13 18:03:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-13 18:03:40,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:40,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:03:40,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:40,794 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:40,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:40,795 INFO L82 PathProgramCache]: Analyzing trace with hash 157930481, now seen corresponding path program 1 times [2019-10-13 18:03:40,795 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:40,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136769842] [2019-10-13 18:03:40,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:40,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:40,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-13 18:03:41,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136769842] [2019-10-13 18:03:41,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015973712] [2019-10-13 18:03:41,023 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 18:03:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:41,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:41,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-13 18:03:41,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:41,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:03:41,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519308423] [2019-10-13 18:03:41,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:41,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:41,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:41,264 INFO L87 Difference]: Start difference. First operand 1304 states and 1748 transitions. Second operand 3 states. [2019-10-13 18:03:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:42,117 INFO L93 Difference]: Finished difference Result 3156 states and 4345 transitions. [2019-10-13 18:03:42,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:42,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2019-10-13 18:03:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:42,131 INFO L225 Difference]: With dead ends: 3156 [2019-10-13 18:03:42,132 INFO L226 Difference]: Without dead ends: 1858 [2019-10-13 18:03:42,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2019-10-13 18:03:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1674. [2019-10-13 18:03:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2019-10-13 18:03:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2323 transitions. [2019-10-13 18:03:42,204 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2323 transitions. Word has length 260 [2019-10-13 18:03:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:42,205 INFO L462 AbstractCegarLoop]: Abstraction has 1674 states and 2323 transitions. [2019-10-13 18:03:42,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2323 transitions. [2019-10-13 18:03:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-10-13 18:03:42,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:42,212 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:03:42,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:42,418 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash 762391661, now seen corresponding path program 1 times [2019-10-13 18:03:42,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:42,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392876422] [2019-10-13 18:03:42,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:42,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:42,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 143 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:03:43,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392876422] [2019-10-13 18:03:43,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530902233] [2019-10-13 18:03:43,798 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 18:03:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:43,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 18:03:43,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:43,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:03:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 18:03:44,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:44,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2019-10-13 18:03:44,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452249807] [2019-10-13 18:03:44,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:03:44,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:03:44,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:03:44,071 INFO L87 Difference]: Start difference. First operand 1674 states and 2323 transitions. Second operand 5 states. [2019-10-13 18:03:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:45,563 INFO L93 Difference]: Finished difference Result 3926 states and 5450 transitions. [2019-10-13 18:03:45,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 18:03:45,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2019-10-13 18:03:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:45,576 INFO L225 Difference]: With dead ends: 3926 [2019-10-13 18:03:45,576 INFO L226 Difference]: Without dead ends: 2258 [2019-10-13 18:03:45,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2019-10-13 18:03:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2019-10-13 18:03:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2066. [2019-10-13 18:03:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2066 states. [2019-10-13 18:03:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2766 transitions. [2019-10-13 18:03:45,644 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2766 transitions. Word has length 274 [2019-10-13 18:03:45,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:45,645 INFO L462 AbstractCegarLoop]: Abstraction has 2066 states and 2766 transitions. [2019-10-13 18:03:45,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:03:45,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2766 transitions. [2019-10-13 18:03:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2019-10-13 18:03:45,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:45,654 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:45,864 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:45,864 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:45,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1515376597, now seen corresponding path program 1 times [2019-10-13 18:03:45,866 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:45,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916035108] [2019-10-13 18:03:45,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:45,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:45,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 118 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 18:03:46,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916035108] [2019-10-13 18:03:46,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535927536] [2019-10-13 18:03:46,804 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 18:03:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:46,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-13 18:03:46,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:47,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-13 18:03:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 298 proven. 53 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 18:03:47,201 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:03:47,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16 [2019-10-13 18:03:47,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724571468] [2019-10-13 18:03:47,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 18:03:47,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:47,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 18:03:47,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:03:47,204 INFO L87 Difference]: Start difference. First operand 2066 states and 2766 transitions. Second operand 16 states. [2019-10-13 18:03:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:53,181 INFO L93 Difference]: Finished difference Result 4262 states and 5767 transitions. [2019-10-13 18:03:53,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 18:03:53,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 358 [2019-10-13 18:03:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:53,194 INFO L225 Difference]: With dead ends: 4262 [2019-10-13 18:03:53,195 INFO L226 Difference]: Without dead ends: 2339 [2019-10-13 18:03:53,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 18:03:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2019-10-13 18:03:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2262. [2019-10-13 18:03:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-13 18:03:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2757 transitions. [2019-10-13 18:03:53,294 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2757 transitions. Word has length 358 [2019-10-13 18:03:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:53,294 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 2757 transitions. [2019-10-13 18:03:53,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 18:03:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2757 transitions. [2019-10-13 18:03:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-10-13 18:03:53,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:53,332 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:53,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:53,540 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:53,540 INFO L82 PathProgramCache]: Analyzing trace with hash -784745466, now seen corresponding path program 1 times [2019-10-13 18:03:53,540 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:53,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618919317] [2019-10-13 18:03:53,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:53,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:53,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 289 proven. 41 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-10-13 18:03:54,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618919317] [2019-10-13 18:03:54,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33445400] [2019-10-13 18:03:54,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:54,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:03:54,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:54,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 18:03:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-10-13 18:03:55,115 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:55,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2019-10-13 18:03:55,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747316876] [2019-10-13 18:03:55,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:03:55,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:55,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:03:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:03:55,124 INFO L87 Difference]: Start difference. First operand 2262 states and 2757 transitions. Second operand 5 states. [2019-10-13 18:03:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:56,490 INFO L93 Difference]: Finished difference Result 4354 states and 5361 transitions. [2019-10-13 18:03:56,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 18:03:56,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383 [2019-10-13 18:03:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:56,504 INFO L225 Difference]: With dead ends: 4354 [2019-10-13 18:03:56,505 INFO L226 Difference]: Without dead ends: 2282 [2019-10-13 18:03:56,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2019-10-13 18:03:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2019-10-13 18:03:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2278. [2019-10-13 18:03:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2019-10-13 18:03:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2708 transitions. [2019-10-13 18:03:56,573 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2708 transitions. Word has length 383 [2019-10-13 18:03:56,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:56,573 INFO L462 AbstractCegarLoop]: Abstraction has 2278 states and 2708 transitions. [2019-10-13 18:03:56,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:03:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2708 transitions. [2019-10-13 18:03:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2019-10-13 18:03:56,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:56,589 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:56,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:56,793 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1555619278, now seen corresponding path program 1 times [2019-10-13 18:03:56,794 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:56,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779318804] [2019-10-13 18:03:56,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:56,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:56,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 370 proven. 111 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2019-10-13 18:03:57,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779318804] [2019-10-13 18:03:57,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385643399] [2019-10-13 18:03:57,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 18:03:57,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 658 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-10-13 18:03:57,898 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:03:57,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 9 [2019-10-13 18:03:57,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402768416] [2019-10-13 18:03:57,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:03:57,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:57,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:03:57,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:03:57,901 INFO L87 Difference]: Start difference. First operand 2278 states and 2708 transitions. Second operand 9 states. [2019-10-13 18:03:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:59,976 INFO L93 Difference]: Finished difference Result 4564 states and 5442 transitions. [2019-10-13 18:03:59,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 18:03:59,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 493 [2019-10-13 18:03:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:59,989 INFO L225 Difference]: With dead ends: 4564 [2019-10-13 18:03:59,989 INFO L226 Difference]: Without dead ends: 2476 [2019-10-13 18:03:59,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:03:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2019-10-13 18:04:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2284. [2019-10-13 18:04:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2019-10-13 18:04:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2614 transitions. [2019-10-13 18:04:00,048 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2614 transitions. Word has length 493 [2019-10-13 18:04:00,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:00,049 INFO L462 AbstractCegarLoop]: Abstraction has 2284 states and 2614 transitions. [2019-10-13 18:04:00,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:04:00,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2614 transitions. [2019-10-13 18:04:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2019-10-13 18:04:00,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:00,058 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:00,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:00,263 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:00,264 INFO L82 PathProgramCache]: Analyzing trace with hash 962890010, now seen corresponding path program 1 times [2019-10-13 18:04:00,264 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:00,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512765364] [2019-10-13 18:04:00,265 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:00,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:00,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 498 proven. 119 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2019-10-13 18:04:01,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512765364] [2019-10-13 18:04:01,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370158156] [2019-10-13 18:04:01,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:02,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 18:04:02,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:02,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-13 18:04:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 865 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2019-10-13 18:04:02,462 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:04:02,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12 [2019-10-13 18:04:02,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108706407] [2019-10-13 18:04:02,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 18:04:02,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:02,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 18:04:02,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:04:02,464 INFO L87 Difference]: Start difference. First operand 2284 states and 2614 transitions. Second operand 12 states. [2019-10-13 18:04:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:04,756 INFO L93 Difference]: Finished difference Result 4664 states and 5354 transitions. [2019-10-13 18:04:04,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:04:04,757 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 577 [2019-10-13 18:04:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:04,767 INFO L225 Difference]: With dead ends: 4664 [2019-10-13 18:04:04,767 INFO L226 Difference]: Without dead ends: 2529 [2019-10-13 18:04:04,773 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 596 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 18:04:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states.