/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:50:04,197 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 02:50:04,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:50:04,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:50:04,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:50:04,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:50:04,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:50:04,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:50:04,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:50:04,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:50:04,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:50:04,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:50:04,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:50:04,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:50:04,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:50:04,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:50:04,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:50:04,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:50:04,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:50:04,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:50:04,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:50:04,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:50:04,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:50:04,326 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:50:04,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:50:04,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:50:04,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:50:04,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:50:04,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:50:04,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:50:04,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:50:04,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:50:04,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:50:04,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:50:04,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:50:04,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:50:04,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:50:04,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:50:04,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:50:04,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:50:04,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:50:04,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:50:04,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:50:04,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:50:04,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:50:04,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:50:04,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:50:04,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:50:04,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:50:04,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:50:04,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:50:04,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:50:04,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:50:04,659 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:50:04,660 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-08-19 02:50:04,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/717b744e3/6c9554a7fb5b4c31bdaa40d1df2a5035/FLAGd000053fe [2020-08-19 02:50:05,330 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:50:05,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-08-19 02:50:05,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/717b744e3/6c9554a7fb5b4c31bdaa40d1df2a5035/FLAGd000053fe [2020-08-19 02:50:05,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/717b744e3/6c9554a7fb5b4c31bdaa40d1df2a5035 [2020-08-19 02:50:05,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:50:05,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:50:05,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:50:05,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:50:05,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:50:05,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:50:05" (1/1) ... [2020-08-19 02:50:05,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ca24e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:05, skipping insertion in model container [2020-08-19 02:50:05,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:50:05" (1/1) ... [2020-08-19 02:50:05,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:50:05,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:50:06,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:50:06,238 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:50:06,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:50:06,396 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:50:06,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06 WrapperNode [2020-08-19 02:50:06,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:50:06,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:50:06,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:50:06,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:50:06,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... [2020-08-19 02:50:06,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:50:06,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:50:06,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:50:06,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:50:06,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 02:50:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:50:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:50:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-19 02:50:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:50:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-19 02:50:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:50:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:50:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 02:50:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:50:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:50:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:50:07,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:50:07,912 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:50:07,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:50:07 BoogieIcfgContainer [2020-08-19 02:50:07,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:50:07,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:50:07,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:50:07,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:50:07,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:50:05" (1/3) ... [2020-08-19 02:50:07,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1469fd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:50:07, skipping insertion in model container [2020-08-19 02:50:07,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:50:06" (2/3) ... [2020-08-19 02:50:07,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1469fd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:50:07, skipping insertion in model container [2020-08-19 02:50:07,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:50:07" (3/3) ... [2020-08-19 02:50:07,927 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-08-19 02:50:07,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:50:07,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:50:07,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:50:07,988 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:50:07,988 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:50:07,989 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:50:07,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:50:07,989 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:50:07,989 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:50:07,989 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:50:07,989 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:50:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-08-19 02:50:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:50:08,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:08,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:50:08,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1918215546, now seen corresponding path program 1 times [2020-08-19 02:50:08,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:08,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518584016] [2020-08-19 02:50:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:50:08,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518584016] [2020-08-19 02:50:08,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:50:08,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:50:08,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069657377] [2020-08-19 02:50:08,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:50:08,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:50:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:50:08,554 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2020-08-19 02:50:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:10,875 INFO L93 Difference]: Finished difference Result 730 states and 1300 transitions. [2020-08-19 02:50:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:50:10,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-08-19 02:50:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:10,902 INFO L225 Difference]: With dead ends: 730 [2020-08-19 02:50:10,902 INFO L226 Difference]: Without dead ends: 447 [2020-08-19 02:50:10,912 INFO L675 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 [2020-08-19 02:50:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-08-19 02:50:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2020-08-19 02:50:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-19 02:50:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 615 transitions. [2020-08-19 02:50:11,007 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 615 transitions. Word has length 67 [2020-08-19 02:50:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:11,008 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 615 transitions. [2020-08-19 02:50:11,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:50:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 615 transitions. [2020-08-19 02:50:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-19 02:50:11,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:11,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:50:11,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:50:11,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:11,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:11,018 INFO L82 PathProgramCache]: Analyzing trace with hash 387828613, now seen corresponding path program 1 times [2020-08-19 02:50:11,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:11,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511144512] [2020-08-19 02:50:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:50:11,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511144512] [2020-08-19 02:50:11,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:50:11,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:50:11,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400756488] [2020-08-19 02:50:11,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:50:11,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:11,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:50:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:50:11,396 INFO L87 Difference]: Start difference. First operand 443 states and 615 transitions. Second operand 7 states. [2020-08-19 02:50:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:12,886 INFO L93 Difference]: Finished difference Result 1033 states and 1409 transitions. [2020-08-19 02:50:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:50:12,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-08-19 02:50:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:12,893 INFO L225 Difference]: With dead ends: 1033 [2020-08-19 02:50:12,894 INFO L226 Difference]: Without dead ends: 596 [2020-08-19 02:50:12,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:50:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-19 02:50:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 592. [2020-08-19 02:50:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-19 02:50:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 781 transitions. [2020-08-19 02:50:12,936 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 781 transitions. Word has length 144 [2020-08-19 02:50:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:12,937 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 781 transitions. [2020-08-19 02:50:12,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:50:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 781 transitions. [2020-08-19 02:50:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-19 02:50:12,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:12,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:50:12,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:50:12,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:12,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1146813015, now seen corresponding path program 1 times [2020-08-19 02:50:12,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:12,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440589271] [2020-08-19 02:50:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:13,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:50:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 112 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 02:50:13,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440589271] [2020-08-19 02:50:13,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:13,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:50:13,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443824993] [2020-08-19 02:50:13,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:50:13,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:13,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:50:13,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:50:13,334 INFO L87 Difference]: Start difference. First operand 592 states and 781 transitions. Second operand 7 states. [2020-08-19 02:50:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:15,732 INFO L93 Difference]: Finished difference Result 1768 states and 2478 transitions. [2020-08-19 02:50:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:50:15,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-08-19 02:50:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:15,743 INFO L225 Difference]: With dead ends: 1768 [2020-08-19 02:50:15,743 INFO L226 Difference]: Without dead ends: 1325 [2020-08-19 02:50:15,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:50:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-08-19 02:50:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1180. [2020-08-19 02:50:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-08-19 02:50:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1600 transitions. [2020-08-19 02:50:15,795 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1600 transitions. Word has length 214 [2020-08-19 02:50:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:15,796 INFO L479 AbstractCegarLoop]: Abstraction has 1180 states and 1600 transitions. [2020-08-19 02:50:15,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:50:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1600 transitions. [2020-08-19 02:50:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-08-19 02:50:15,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:15,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:50:15,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:50:15,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1807493347, now seen corresponding path program 1 times [2020-08-19 02:50:15,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:15,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955753992] [2020-08-19 02:50:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:50:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:50:16,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955753992] [2020-08-19 02:50:16,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:16,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:50:16,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971036354] [2020-08-19 02:50:16,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:50:16,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:16,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:50:16,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:50:16,528 INFO L87 Difference]: Start difference. First operand 1180 states and 1600 transitions. Second operand 12 states. [2020-08-19 02:50:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:20,515 INFO L93 Difference]: Finished difference Result 2974 states and 4211 transitions. [2020-08-19 02:50:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:50:20,516 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 256 [2020-08-19 02:50:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:20,553 INFO L225 Difference]: With dead ends: 2974 [2020-08-19 02:50:20,554 INFO L226 Difference]: Without dead ends: 1943 [2020-08-19 02:50:20,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-08-19 02:50:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-08-19 02:50:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1788. [2020-08-19 02:50:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2020-08-19 02:50:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2375 transitions. [2020-08-19 02:50:20,634 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2375 transitions. Word has length 256 [2020-08-19 02:50:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:20,635 INFO L479 AbstractCegarLoop]: Abstraction has 1788 states and 2375 transitions. [2020-08-19 02:50:20,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:50:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2375 transitions. [2020-08-19 02:50:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-19 02:50:20,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:20,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:50:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:50:20,643 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1006495754, now seen corresponding path program 1 times [2020-08-19 02:50:20,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:20,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273645423] [2020-08-19 02:50:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:20,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:20,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:50:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:50:21,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273645423] [2020-08-19 02:50:21,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:21,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:50:21,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934400252] [2020-08-19 02:50:21,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:50:21,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:21,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:50:21,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:50:21,117 INFO L87 Difference]: Start difference. First operand 1788 states and 2375 transitions. Second operand 10 states. [2020-08-19 02:50:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:25,190 INFO L93 Difference]: Finished difference Result 4483 states and 6103 transitions. [2020-08-19 02:50:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 02:50:25,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 265 [2020-08-19 02:50:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:25,210 INFO L225 Difference]: With dead ends: 4483 [2020-08-19 02:50:25,210 INFO L226 Difference]: Without dead ends: 2817 [2020-08-19 02:50:25,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-08-19 02:50:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2020-08-19 02:50:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2380. [2020-08-19 02:50:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-08-19 02:50:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3210 transitions. [2020-08-19 02:50:25,305 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3210 transitions. Word has length 265 [2020-08-19 02:50:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:25,306 INFO L479 AbstractCegarLoop]: Abstraction has 2380 states and 3210 transitions. [2020-08-19 02:50:25,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:50:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3210 transitions. [2020-08-19 02:50:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-19 02:50:25,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:25,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:50:25,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:50:25,316 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:25,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1040380270, now seen corresponding path program 1 times [2020-08-19 02:50:25,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:25,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052383868] [2020-08-19 02:50:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 02:50:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:50:25,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052383868] [2020-08-19 02:50:25,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:25,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:50:25,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211767439] [2020-08-19 02:50:25,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:50:25,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:25,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:50:25,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:50:25,914 INFO L87 Difference]: Start difference. First operand 2380 states and 3210 transitions. Second operand 9 states. [2020-08-19 02:50:27,628 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-08-19 02:50:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:31,106 INFO L93 Difference]: Finished difference Result 5507 states and 7463 transitions. [2020-08-19 02:50:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:50:31,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2020-08-19 02:50:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:31,124 INFO L225 Difference]: With dead ends: 5507 [2020-08-19 02:50:31,125 INFO L226 Difference]: Without dead ends: 3276 [2020-08-19 02:50:31,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:50:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2020-08-19 02:50:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3272. [2020-08-19 02:50:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3272 states. [2020-08-19 02:50:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4302 transitions. [2020-08-19 02:50:31,235 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4302 transitions. Word has length 301 [2020-08-19 02:50:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:31,236 INFO L479 AbstractCegarLoop]: Abstraction has 3272 states and 4302 transitions. [2020-08-19 02:50:31,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:50:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4302 transitions. [2020-08-19 02:50:31,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-08-19 02:50:31,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:31,295 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:50:31,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:50:31,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:31,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:31,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1714845138, now seen corresponding path program 1 times [2020-08-19 02:50:31,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:31,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537403964] [2020-08-19 02:50:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 02:50:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-19 02:50:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 363 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-08-19 02:50:31,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537403964] [2020-08-19 02:50:31,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:31,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:50:31,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886866099] [2020-08-19 02:50:31,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:50:31,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:31,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:50:31,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:50:31,846 INFO L87 Difference]: Start difference. First operand 3272 states and 4302 transitions. Second operand 9 states. [2020-08-19 02:50:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:35,561 INFO L93 Difference]: Finished difference Result 7541 states and 10111 transitions. [2020-08-19 02:50:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:50:35,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2020-08-19 02:50:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:35,585 INFO L225 Difference]: With dead ends: 7541 [2020-08-19 02:50:35,585 INFO L226 Difference]: Without dead ends: 4418 [2020-08-19 02:50:35,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:50:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2020-08-19 02:50:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 2986. [2020-08-19 02:50:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2986 states. [2020-08-19 02:50:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 3596 transitions. [2020-08-19 02:50:35,710 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 3596 transitions. Word has length 373 [2020-08-19 02:50:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:35,711 INFO L479 AbstractCegarLoop]: Abstraction has 2986 states and 3596 transitions. [2020-08-19 02:50:35,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:50:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 3596 transitions. [2020-08-19 02:50:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-08-19 02:50:35,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:35,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-19 02:50:35,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:50:35,724 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash 348873925, now seen corresponding path program 1 times [2020-08-19 02:50:35,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:35,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632350620] [2020-08-19 02:50:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:36,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 02:50:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-19 02:50:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 255 proven. 187 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 02:50:36,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632350620] [2020-08-19 02:50:36,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:36,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:50:36,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784030456] [2020-08-19 02:50:36,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:50:36,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:36,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:50:36,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:50:36,305 INFO L87 Difference]: Start difference. First operand 2986 states and 3596 transitions. Second operand 11 states. [2020-08-19 02:50:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:41,709 INFO L93 Difference]: Finished difference Result 6564 states and 8120 transitions. [2020-08-19 02:50:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:50:41,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 378 [2020-08-19 02:50:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:41,725 INFO L225 Difference]: With dead ends: 6564 [2020-08-19 02:50:41,725 INFO L226 Difference]: Without dead ends: 4023 [2020-08-19 02:50:41,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:50:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2020-08-19 02:50:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3435. [2020-08-19 02:50:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-08-19 02:50:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4055 transitions. [2020-08-19 02:50:41,840 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4055 transitions. Word has length 378 [2020-08-19 02:50:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:41,841 INFO L479 AbstractCegarLoop]: Abstraction has 3435 states and 4055 transitions. [2020-08-19 02:50:41,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:50:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4055 transitions. [2020-08-19 02:50:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-08-19 02:50:41,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:41,862 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:50:41,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:50:41,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1328157818, now seen corresponding path program 1 times [2020-08-19 02:50:41,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:41,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806210874] [2020-08-19 02:50:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:50:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-19 02:50:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 185 proven. 188 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-08-19 02:50:42,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806210874] [2020-08-19 02:50:42,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:42,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:50:42,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177087539] [2020-08-19 02:50:42,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 02:50:42,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:42,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 02:50:42,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:50:42,813 INFO L87 Difference]: Start difference. First operand 3435 states and 4055 transitions. Second operand 14 states. [2020-08-19 02:50:48,336 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-08-19 02:50:48,877 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-08-19 02:50:49,535 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-08-19 02:50:50,138 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-08-19 02:50:50,771 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-08-19 02:50:51,588 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-08-19 02:50:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:52,029 INFO L93 Difference]: Finished difference Result 7319 states and 8836 transitions. [2020-08-19 02:50:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-19 02:50:52,030 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 389 [2020-08-19 02:50:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:52,047 INFO L225 Difference]: With dead ends: 7319 [2020-08-19 02:50:52,047 INFO L226 Difference]: Without dead ends: 4478 [2020-08-19 02:50:52,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=629, Invalid=2677, Unknown=0, NotChecked=0, Total=3306 [2020-08-19 02:50:52,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2020-08-19 02:50:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 3882. [2020-08-19 02:50:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3882 states. [2020-08-19 02:50:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 4571 transitions. [2020-08-19 02:50:52,163 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 4571 transitions. Word has length 389 [2020-08-19 02:50:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:52,164 INFO L479 AbstractCegarLoop]: Abstraction has 3882 states and 4571 transitions. [2020-08-19 02:50:52,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 02:50:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 4571 transitions. [2020-08-19 02:50:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-08-19 02:50:52,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:52,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:50:52,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:50:52,183 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash -301430794, now seen corresponding path program 1 times [2020-08-19 02:50:52,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:52,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496083065] [2020-08-19 02:50:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 02:50:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-19 02:50:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 376 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-19 02:50:52,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496083065] [2020-08-19 02:50:52,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:52,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:50:52,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801841588] [2020-08-19 02:50:52,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:50:52,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:50:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:50:52,911 INFO L87 Difference]: Start difference. First operand 3882 states and 4571 transitions. Second operand 12 states. [2020-08-19 02:50:53,651 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-08-19 02:50:54,544 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-08-19 02:50:55,791 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-08-19 02:50:56,243 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-08-19 02:50:56,811 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-08-19 02:50:57,156 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-08-19 02:50:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:57,783 INFO L93 Difference]: Finished difference Result 7333 states and 8707 transitions. [2020-08-19 02:50:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 02:50:57,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 397 [2020-08-19 02:50:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:57,799 INFO L225 Difference]: With dead ends: 7333 [2020-08-19 02:50:57,799 INFO L226 Difference]: Without dead ends: 4045 [2020-08-19 02:50:57,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 02:50:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2020-08-19 02:50:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4021. [2020-08-19 02:50:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4021 states. [2020-08-19 02:50:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 4663 transitions. [2020-08-19 02:50:57,900 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 4663 transitions. Word has length 397 [2020-08-19 02:50:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:57,901 INFO L479 AbstractCegarLoop]: Abstraction has 4021 states and 4663 transitions. [2020-08-19 02:50:57,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:50:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 4663 transitions. [2020-08-19 02:50:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-08-19 02:50:57,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:50:57,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:50:57,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:50:57,913 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:50:57,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:50:57,914 INFO L82 PathProgramCache]: Analyzing trace with hash 252720706, now seen corresponding path program 1 times [2020-08-19 02:50:57,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:50:57,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086687842] [2020-08-19 02:50:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:50:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:58,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:50:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:50:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 02:50:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 02:50:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:50:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-08-19 02:50:58,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086687842] [2020-08-19 02:50:58,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:50:58,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 02:50:58,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978824364] [2020-08-19 02:50:58,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:50:58,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:50:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:50:58,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:50:58,407 INFO L87 Difference]: Start difference. First operand 4021 states and 4663 transitions. Second operand 5 states. [2020-08-19 02:50:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:50:59,797 INFO L93 Difference]: Finished difference Result 5187 states and 6108 transitions. [2020-08-19 02:50:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:50:59,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-08-19 02:50:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:50:59,799 INFO L225 Difference]: With dead ends: 5187 [2020-08-19 02:50:59,799 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:50:59,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:50:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:50:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:50:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:50:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:50:59,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 407 [2020-08-19 02:50:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:50:59,809 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:50:59,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:50:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:50:59,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:50:59,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:50:59,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:51:00,526 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 197 [2020-08-19 02:51:00,731 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 197 [2020-08-19 02:51:01,958 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 258 DAG size of output: 38 [2020-08-19 02:51:02,911 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 56