/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:39:59,189 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-22 00:39:59,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:39:59,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:39:59,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:39:59,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:39:59,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:39:59,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:39:59,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:39:59,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:39:59,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:39:59,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:39:59,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:39:59,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:39:59,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 00:39:59,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:39:59,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:39:59,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:39:59,247 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 [2020-08-22 00:39:59,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:39:59,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:39:59,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:39:59,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:39:59,272 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:39:59,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:39:59,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:39:59,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:39:59,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:39:59,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:39:59,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:39:59,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:39:59,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:39:59,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:39:59,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:39:59,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:39:59,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:39:59,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:39:59,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:39:59,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:39:59,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:39:59,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:39:59,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:39:59,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:39:59,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:39:59,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:39:59,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:39:59,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:39:59,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:39:59,276 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:39:59,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:39:59,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:39:59,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:39:59,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:39:59,617 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:39:59,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-08-22 00:39:59,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d12bf3b0c/db3135840fd94338b7e3bd36c941dc22/FLAG0dc6984b0 [2020-08-22 00:40:00,275 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:40:00,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-08-22 00:40:00,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d12bf3b0c/db3135840fd94338b7e3bd36c941dc22/FLAG0dc6984b0 [2020-08-22 00:40:00,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d12bf3b0c/db3135840fd94338b7e3bd36c941dc22 [2020-08-22 00:40:00,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:40:00,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:40:00,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:40:00,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:40:00,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:40:00,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:40:00" (1/1) ... [2020-08-22 00:40:00,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:00, skipping insertion in model container [2020-08-22 00:40:00,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:40:00" (1/1) ... [2020-08-22 00:40:00,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:40:00,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:40:01,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:40:01,100 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:40:01,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:40:01,219 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:40:01,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01 WrapperNode [2020-08-22 00:40:01,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:40:01,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:40:01,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:40:01,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:40:01,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (1/1) ... [2020-08-22 00:40:01,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:40:01,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:40:01,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:40:01,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:40:01,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (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 [2020-08-22 00:40:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:40:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:40:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-22 00:40:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-22 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:40:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 00:40:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:40:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:40:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:40:02,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:40:02,895 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 00:40:02,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:40:02 BoogieIcfgContainer [2020-08-22 00:40:02,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:40:02,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:40:02,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:40:02,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:40:02,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:40:00" (1/3) ... [2020-08-22 00:40:02,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506743ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:40:02, skipping insertion in model container [2020-08-22 00:40:02,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:40:01" (2/3) ... [2020-08-22 00:40:02,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506743ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:40:02, skipping insertion in model container [2020-08-22 00:40:02,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:40:02" (3/3) ... [2020-08-22 00:40:02,920 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-08-22 00:40:02,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:40:02,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:40:02,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:40:03,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:40:03,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:40:03,001 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:40:03,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:40:03,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:40:03,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:40:03,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:40:03,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:40:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-08-22 00:40:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 00:40:03,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:03,049 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] [2020-08-22 00:40:03,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:03,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1918215546, now seen corresponding path program 1 times [2020-08-22 00:40:03,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:03,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252026933] [2020-08-22 00:40:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:40:03,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252026933] [2020-08-22 00:40:03,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:40:03,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:40:03,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360976993] [2020-08-22 00:40:03,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:40:03,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:40:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:40:03,553 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2020-08-22 00:40:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:05,938 INFO L93 Difference]: Finished difference Result 730 states and 1300 transitions. [2020-08-22 00:40:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:40:05,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-08-22 00:40:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:05,959 INFO L225 Difference]: With dead ends: 730 [2020-08-22 00:40:05,960 INFO L226 Difference]: Without dead ends: 447 [2020-08-22 00:40:05,969 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 [2020-08-22 00:40:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-08-22 00:40:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2020-08-22 00:40:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-22 00:40:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 615 transitions. [2020-08-22 00:40:06,061 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 615 transitions. Word has length 67 [2020-08-22 00:40:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:06,062 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 615 transitions. [2020-08-22 00:40:06,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:40:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 615 transitions. [2020-08-22 00:40:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-22 00:40:06,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:06,074 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] [2020-08-22 00:40:06,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:40:06,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:06,075 INFO L82 PathProgramCache]: Analyzing trace with hash 387828613, now seen corresponding path program 1 times [2020-08-22 00:40:06,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:06,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245418582] [2020-08-22 00:40:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:40:06,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245418582] [2020-08-22 00:40:06,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:40:06,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:40:06,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129527081] [2020-08-22 00:40:06,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:40:06,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:40:06,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:40:06,401 INFO L87 Difference]: Start difference. First operand 443 states and 615 transitions. Second operand 7 states. [2020-08-22 00:40:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:07,825 INFO L93 Difference]: Finished difference Result 1033 states and 1409 transitions. [2020-08-22 00:40:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:40:07,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-08-22 00:40:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:07,859 INFO L225 Difference]: With dead ends: 1033 [2020-08-22 00:40:07,859 INFO L226 Difference]: Without dead ends: 596 [2020-08-22 00:40:07,862 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 [2020-08-22 00:40:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-22 00:40:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 592. [2020-08-22 00:40:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 00:40:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 781 transitions. [2020-08-22 00:40:07,916 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 781 transitions. Word has length 144 [2020-08-22 00:40:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:07,916 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 781 transitions. [2020-08-22 00:40:07,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:40:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 781 transitions. [2020-08-22 00:40:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-22 00:40:07,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:07,932 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] [2020-08-22 00:40:07,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:40:07,933 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:07,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1146813015, now seen corresponding path program 1 times [2020-08-22 00:40:07,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:07,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194032580] [2020-08-22 00:40:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:08,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:40:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 112 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-22 00:40:08,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194032580] [2020-08-22 00:40:08,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:08,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 00:40:08,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511695564] [2020-08-22 00:40:08,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:40:08,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:40:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:40:08,277 INFO L87 Difference]: Start difference. First operand 592 states and 781 transitions. Second operand 7 states. [2020-08-22 00:40:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:10,514 INFO L93 Difference]: Finished difference Result 1768 states and 2478 transitions. [2020-08-22 00:40:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:40:10,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-08-22 00:40:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:10,530 INFO L225 Difference]: With dead ends: 1768 [2020-08-22 00:40:10,530 INFO L226 Difference]: Without dead ends: 1325 [2020-08-22 00:40:10,533 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 [2020-08-22 00:40:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-08-22 00:40:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1180. [2020-08-22 00:40:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-08-22 00:40:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1600 transitions. [2020-08-22 00:40:10,584 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1600 transitions. Word has length 214 [2020-08-22 00:40:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:10,585 INFO L479 AbstractCegarLoop]: Abstraction has 1180 states and 1600 transitions. [2020-08-22 00:40:10,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:40:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1600 transitions. [2020-08-22 00:40:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-08-22 00:40:10,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:10,592 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] [2020-08-22 00:40:10,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:40:10,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:10,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1807493347, now seen corresponding path program 1 times [2020-08-22 00:40:10,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:10,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126895672] [2020-08-22 00:40:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:40:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:40:11,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126895672] [2020-08-22 00:40:11,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:11,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:40:11,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439890228] [2020-08-22 00:40:11,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:40:11,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:40:11,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:40:11,346 INFO L87 Difference]: Start difference. First operand 1180 states and 1600 transitions. Second operand 12 states. [2020-08-22 00:40:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:15,165 INFO L93 Difference]: Finished difference Result 2974 states and 4211 transitions. [2020-08-22 00:40:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 00:40:15,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 256 [2020-08-22 00:40:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:15,179 INFO L225 Difference]: With dead ends: 2974 [2020-08-22 00:40:15,180 INFO L226 Difference]: Without dead ends: 1943 [2020-08-22 00:40:15,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-08-22 00:40:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-08-22 00:40:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1788. [2020-08-22 00:40:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2020-08-22 00:40:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2375 transitions. [2020-08-22 00:40:15,267 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2375 transitions. Word has length 256 [2020-08-22 00:40:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:15,268 INFO L479 AbstractCegarLoop]: Abstraction has 1788 states and 2375 transitions. [2020-08-22 00:40:15,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:40:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2375 transitions. [2020-08-22 00:40:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 00:40:15,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:15,277 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] [2020-08-22 00:40:15,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:40:15,277 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:15,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1006495754, now seen corresponding path program 1 times [2020-08-22 00:40:15,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:15,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783437821] [2020-08-22 00:40:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 00:40:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:40:15,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783437821] [2020-08-22 00:40:15,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:15,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 00:40:15,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151246589] [2020-08-22 00:40:15,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:40:15,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:15,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:40:15,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:40:15,729 INFO L87 Difference]: Start difference. First operand 1788 states and 2375 transitions. Second operand 10 states. [2020-08-22 00:40:19,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:19,177 INFO L93 Difference]: Finished difference Result 4483 states and 6103 transitions. [2020-08-22 00:40:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 00:40:19,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 265 [2020-08-22 00:40:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:19,196 INFO L225 Difference]: With dead ends: 4483 [2020-08-22 00:40:19,196 INFO L226 Difference]: Without dead ends: 2817 [2020-08-22 00:40:19,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-08-22 00:40:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2020-08-22 00:40:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2380. [2020-08-22 00:40:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-08-22 00:40:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3210 transitions. [2020-08-22 00:40:19,308 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3210 transitions. Word has length 265 [2020-08-22 00:40:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:19,309 INFO L479 AbstractCegarLoop]: Abstraction has 2380 states and 3210 transitions. [2020-08-22 00:40:19,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:40:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3210 transitions. [2020-08-22 00:40:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-22 00:40:19,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:19,320 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] [2020-08-22 00:40:19,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:40:19,321 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:19,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1040380270, now seen corresponding path program 1 times [2020-08-22 00:40:19,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:19,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748568355] [2020-08-22 00:40:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:19,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 00:40:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:40:19,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748568355] [2020-08-22 00:40:19,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:19,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 00:40:19,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996382516] [2020-08-22 00:40:19,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:40:19,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:19,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:40:19,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:40:19,888 INFO L87 Difference]: Start difference. First operand 2380 states and 3210 transitions. Second operand 9 states. [2020-08-22 00:40:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:24,843 INFO L93 Difference]: Finished difference Result 5507 states and 7463 transitions. [2020-08-22 00:40:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:40:24,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2020-08-22 00:40:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:24,862 INFO L225 Difference]: With dead ends: 5507 [2020-08-22 00:40:24,862 INFO L226 Difference]: Without dead ends: 3276 [2020-08-22 00:40:24,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:40:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2020-08-22 00:40:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3272. [2020-08-22 00:40:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3272 states. [2020-08-22 00:40:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4302 transitions. [2020-08-22 00:40:24,972 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4302 transitions. Word has length 301 [2020-08-22 00:40:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:24,973 INFO L479 AbstractCegarLoop]: Abstraction has 3272 states and 4302 transitions. [2020-08-22 00:40:24,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:40:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4302 transitions. [2020-08-22 00:40:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-08-22 00:40:24,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:24,989 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] [2020-08-22 00:40:24,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:40:24,989 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1714845138, now seen corresponding path program 1 times [2020-08-22 00:40:24,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:24,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13984726] [2020-08-22 00:40:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 00:40:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:25,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 00:40:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 363 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-08-22 00:40:25,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13984726] [2020-08-22 00:40:25,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:25,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 00:40:25,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533178080] [2020-08-22 00:40:25,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:40:25,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:25,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:40:25,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:40:25,596 INFO L87 Difference]: Start difference. First operand 3272 states and 4302 transitions. Second operand 9 states. [2020-08-22 00:40:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:29,381 INFO L93 Difference]: Finished difference Result 7541 states and 10111 transitions. [2020-08-22 00:40:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:40:29,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2020-08-22 00:40:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:29,405 INFO L225 Difference]: With dead ends: 7541 [2020-08-22 00:40:29,405 INFO L226 Difference]: Without dead ends: 4418 [2020-08-22 00:40:29,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-08-22 00:40:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2020-08-22 00:40:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 2986. [2020-08-22 00:40:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2986 states. [2020-08-22 00:40:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 3596 transitions. [2020-08-22 00:40:29,517 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 3596 transitions. Word has length 373 [2020-08-22 00:40:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:29,517 INFO L479 AbstractCegarLoop]: Abstraction has 2986 states and 3596 transitions. [2020-08-22 00:40:29,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:40:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 3596 transitions. [2020-08-22 00:40:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-08-22 00:40:29,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:29,530 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] [2020-08-22 00:40:29,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:40:29,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:29,530 INFO L82 PathProgramCache]: Analyzing trace with hash 348873925, now seen corresponding path program 1 times [2020-08-22 00:40:29,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:29,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509776932] [2020-08-22 00:40:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:29,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:29,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 00:40:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 00:40:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 255 proven. 187 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 00:40:30,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509776932] [2020-08-22 00:40:30,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:30,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:40:30,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522697226] [2020-08-22 00:40:30,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:40:30,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:40:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:40:30,278 INFO L87 Difference]: Start difference. First operand 2986 states and 3596 transitions. Second operand 11 states. [2020-08-22 00:40:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:35,428 INFO L93 Difference]: Finished difference Result 6564 states and 8120 transitions. [2020-08-22 00:40:35,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:40:35,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 378 [2020-08-22 00:40:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:35,446 INFO L225 Difference]: With dead ends: 6564 [2020-08-22 00:40:35,447 INFO L226 Difference]: Without dead ends: 4023 [2020-08-22 00:40:35,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-08-22 00:40:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2020-08-22 00:40:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3435. [2020-08-22 00:40:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-08-22 00:40:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4055 transitions. [2020-08-22 00:40:35,545 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4055 transitions. Word has length 378 [2020-08-22 00:40:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:35,546 INFO L479 AbstractCegarLoop]: Abstraction has 3435 states and 4055 transitions. [2020-08-22 00:40:35,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:40:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4055 transitions. [2020-08-22 00:40:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-08-22 00:40:35,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:35,560 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] [2020-08-22 00:40:35,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:40:35,561 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:35,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1328157818, now seen corresponding path program 1 times [2020-08-22 00:40:35,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:35,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659822301] [2020-08-22 00:40:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:35,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:40:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 00:40:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 185 proven. 188 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-08-22 00:40:36,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659822301] [2020-08-22 00:40:36,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:36,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:40:36,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459893983] [2020-08-22 00:40:36,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 00:40:36,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:36,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 00:40:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:40:36,403 INFO L87 Difference]: Start difference. First operand 3435 states and 4055 transitions. Second operand 14 states. [2020-08-22 00:40:40,803 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-08-22 00:40:42,441 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-08-22 00:40:42,979 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-08-22 00:40:43,594 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-08-22 00:40:44,325 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-08-22 00:40:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:44,724 INFO L93 Difference]: Finished difference Result 7319 states and 8836 transitions. [2020-08-22 00:40:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 00:40:44,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 389 [2020-08-22 00:40:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:44,746 INFO L225 Difference]: With dead ends: 7319 [2020-08-22 00:40:44,746 INFO L226 Difference]: Without dead ends: 4478 [2020-08-22 00:40:44,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=629, Invalid=2677, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 00:40:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2020-08-22 00:40:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 3882. [2020-08-22 00:40:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3882 states. [2020-08-22 00:40:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 4571 transitions. [2020-08-22 00:40:44,859 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 4571 transitions. Word has length 389 [2020-08-22 00:40:44,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:44,860 INFO L479 AbstractCegarLoop]: Abstraction has 3882 states and 4571 transitions. [2020-08-22 00:40:44,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 00:40:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 4571 transitions. [2020-08-22 00:40:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-08-22 00:40:44,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:44,876 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] [2020-08-22 00:40:44,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:40:44,877 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:44,877 INFO L82 PathProgramCache]: Analyzing trace with hash -301430794, now seen corresponding path program 1 times [2020-08-22 00:40:44,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:44,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721834058] [2020-08-22 00:40:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 00:40:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 00:40:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 376 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-22 00:40:45,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721834058] [2020-08-22 00:40:45,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:45,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:40:45,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494539682] [2020-08-22 00:40:45,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:40:45,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:40:45,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:40:45,643 INFO L87 Difference]: Start difference. First operand 3882 states and 4571 transitions. Second operand 12 states. [2020-08-22 00:40:46,304 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-08-22 00:40:49,075 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-08-22 00:40:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:49,887 INFO L93 Difference]: Finished difference Result 7333 states and 8707 transitions. [2020-08-22 00:40:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 00:40:49,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 397 [2020-08-22 00:40:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:49,915 INFO L225 Difference]: With dead ends: 7333 [2020-08-22 00:40:49,915 INFO L226 Difference]: Without dead ends: 4045 [2020-08-22 00:40:49,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 00:40:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2020-08-22 00:40:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4021. [2020-08-22 00:40:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4021 states. [2020-08-22 00:40:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 4663 transitions. [2020-08-22 00:40:50,018 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 4663 transitions. Word has length 397 [2020-08-22 00:40:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:50,019 INFO L479 AbstractCegarLoop]: Abstraction has 4021 states and 4663 transitions. [2020-08-22 00:40:50,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:40:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 4663 transitions. [2020-08-22 00:40:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-08-22 00:40:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:40:50,036 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] [2020-08-22 00:40:50,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:40:50,036 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:40:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:40:50,037 INFO L82 PathProgramCache]: Analyzing trace with hash 252720706, now seen corresponding path program 1 times [2020-08-22 00:40:50,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:40:50,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108250993] [2020-08-22 00:40:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:40:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:40:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:40:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 00:40:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 00:40:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:40:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-08-22 00:40:50,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108250993] [2020-08-22 00:40:50,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:40:50,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 00:40:50,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221746032] [2020-08-22 00:40:50,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:40:50,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:40:50,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:40:50,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:40:50,439 INFO L87 Difference]: Start difference. First operand 4021 states and 4663 transitions. Second operand 5 states. [2020-08-22 00:40:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:40:51,920 INFO L93 Difference]: Finished difference Result 5187 states and 6108 transitions. [2020-08-22 00:40:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:40:51,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-08-22 00:40:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:40:51,922 INFO L225 Difference]: With dead ends: 5187 [2020-08-22 00:40:51,922 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:40:51,931 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 [2020-08-22 00:40:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:40:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:40:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:40:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:40:51,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 407 [2020-08-22 00:40:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:40:51,933 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:40:51,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:40:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:40:51,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:40:51,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:40:51,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:40:52,633 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 197 [2020-08-22 00:40:52,890 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 197 [2020-08-22 00:40:54,029 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 258 DAG size of output: 38 [2020-08-22 00:40:54,868 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 56