/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:58,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:58,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:58,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:58,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:58,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:58,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:58,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:58,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:58,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:58,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:58,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:58,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:58,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:58,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:58,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:58,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:58,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:58,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:58,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:58,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:58,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:58,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:58,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:58,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:58,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:58,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:58,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:58,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:58,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:58,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:58,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:58,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:58,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:58,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:58,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:58,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:58,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:58,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:58,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:58,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:58,407 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 [2020-09-24 20:22:58,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:58,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:58,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:58,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:58,434 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:58,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:58,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:58,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:58,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:58,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:58,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:58,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:58,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:58,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:58,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:58,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:58,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:58,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:58,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:58,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:58,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:58,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:58,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:58,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:58,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:58,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:58,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:58,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:58,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:58,439 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:22:58,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:58,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:58,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:58,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:58,887 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:58,889 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-24 20:22:58,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3401502ea/47b5f8eee8ae4541820a73f27ed9ef36/FLAG390540d55 [2020-09-24 20:22:59,419 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:59,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-24 20:22:59,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3401502ea/47b5f8eee8ae4541820a73f27ed9ef36/FLAG390540d55 [2020-09-24 20:22:59,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3401502ea/47b5f8eee8ae4541820a73f27ed9ef36 [2020-09-24 20:22:59,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:59,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:59,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:59,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:59,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:59,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:59" (1/1) ... [2020-09-24 20:22:59,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3c1036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:59, skipping insertion in model container [2020-09-24 20:22:59,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:59" (1/1) ... [2020-09-24 20:22:59,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:59,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:00,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:00,052 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:00,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:00,091 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:00,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00 WrapperNode [2020-09-24 20:23:00,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:00,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:00,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:00,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:00,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:00,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:00,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:00,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:00,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (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 [2020-09-24 20:23:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-24 20:23:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-24 20:23:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:00,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:00,510 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:00,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:00 BoogieIcfgContainer [2020-09-24 20:23:00,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:00,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:00,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:00,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:00,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:59" (1/3) ... [2020-09-24 20:23:00,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47823f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:00, skipping insertion in model container [2020-09-24 20:23:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (2/3) ... [2020-09-24 20:23:00,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47823f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:00, skipping insertion in model container [2020-09-24 20:23:00,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:00" (3/3) ... [2020-09-24 20:23:00,524 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-09-24 20:23:00,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:00,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:00,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:00,668 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:00,668 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:00,668 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:00,669 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:00,669 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:00,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:00,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:00,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-24 20:23:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 20:23:00,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:00,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:00,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-24 20:23:00,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:00,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864015218] [2020-09-24 20:23:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 20:23:00,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 20:23:00,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:23:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:01,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:01,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:01,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:23:01,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:01,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864015218] [2020-09-24 20:23:01,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:01,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:01,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514079042] [2020-09-24 20:23:01,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:01,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:01,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:01,167 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-09-24 20:23:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:01,307 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-24 20:23:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:01,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 20:23:01,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:01,323 INFO L225 Difference]: With dead ends: 50 [2020-09-24 20:23:01,323 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 20:23:01,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 20:23:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-24 20:23:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 20:23:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-24 20:23:01,377 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-24 20:23:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:01,377 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-24 20:23:01,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-24 20:23:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 20:23:01,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,380 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] [2020-09-24 20:23:01,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:01,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-24 20:23:01,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815225440] [2020-09-24 20:23:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:23:01,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 20:23:01,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:23:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:01,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:01,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 20:23:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:01,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815225440] [2020-09-24 20:23:01,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:01,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:01,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784550304] [2020-09-24 20:23:01,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:01,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:01,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:01,635 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-24 20:23:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:01,745 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-24 20:23:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:01,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-24 20:23:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:01,748 INFO L225 Difference]: With dead ends: 39 [2020-09-24 20:23:01,748 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 20:23:01,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 20:23:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-24 20:23:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 20:23:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-24 20:23:01,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-24 20:23:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:01,771 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-24 20:23:01,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-24 20:23:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:23:01,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:23:01,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:01,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-24 20:23:01,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904810506] [2020-09-24 20:23:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:23:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-24 20:23:02,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:23:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 20:23:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:02,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:02,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:02,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904810506] [2020-09-24 20:23:02,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:02,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:02,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404788149] [2020-09-24 20:23:02,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:02,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:02,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:02,478 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-24 20:23:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,579 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-09-24 20:23:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:02,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 20:23:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,582 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:23:02,582 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 20:23:02,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 20:23:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-24 20:23:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 20:23:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-09-24 20:23:02,594 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2020-09-24 20:23:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,594 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-09-24 20:23:02,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-09-24 20:23:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 20:23:02,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:23:02,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:02,597 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-24 20:23:02,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298087400] [2020-09-24 20:23:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 20:23:03,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-24 20:23:03,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:23:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:03,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 20:23:03,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:03,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:03,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:03,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:03,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:03,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298087400] [2020-09-24 20:23:03,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:03,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:23:03,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945536570] [2020-09-24 20:23:03,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:23:03,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:03,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:23:03,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:03,415 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 6 states. [2020-09-24 20:23:03,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:03,492 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-24 20:23:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:03,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-24 20:23:03,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:03,495 INFO L225 Difference]: With dead ends: 53 [2020-09-24 20:23:03,495 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 20:23:03,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 20:23:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-09-24 20:23:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 20:23:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-09-24 20:23:03,505 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 37 [2020-09-24 20:23:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:03,505 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-09-24 20:23:03,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:23:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-09-24 20:23:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:23:03,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:03,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 20:23:03,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:03,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash -693972664, now seen corresponding path program 1 times [2020-09-24 20:23:03,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:03,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574610146] [2020-09-24 20:23:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:23:04,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-24 20:23:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:23:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:04,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:04,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:04,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-24 20:23:04,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:23:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:04,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:04,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:04,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574610146] [2020-09-24 20:23:04,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:04,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:23:04,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508582592] [2020-09-24 20:23:04,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:04,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:04,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:04,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:04,706 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 8 states. [2020-09-24 20:23:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:04,858 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2020-09-24 20:23:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:04,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-24 20:23:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:04,861 INFO L225 Difference]: With dead ends: 86 [2020-09-24 20:23:04,861 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:23:04,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:23:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2020-09-24 20:23:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 20:23:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-09-24 20:23:04,871 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 38 [2020-09-24 20:23:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:04,871 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-09-24 20:23:04,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-09-24 20:23:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:23:04,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:04,874 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-24 20:23:04,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:04,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash -494889179, now seen corresponding path program 2 times [2020-09-24 20:23:04,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:04,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044543751] [2020-09-24 20:23:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:23:09,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4581 [2020-09-24 20:23:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:23:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:23:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:09,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:09,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:09,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:10,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:10,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 20:23:10,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:10,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:10,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:10,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:23:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:23:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:23:10,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044543751] [2020-09-24 20:23:10,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:10,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:23:10,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643640045] [2020-09-24 20:23:10,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:10,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:10,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:10,675 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2020-09-24 20:23:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:10,801 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2020-09-24 20:23:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:10,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-24 20:23:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:10,804 INFO L225 Difference]: With dead ends: 89 [2020-09-24 20:23:10,804 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 20:23:10,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 20:23:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-09-24 20:23:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 20:23:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-09-24 20:23:10,814 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 54 [2020-09-24 20:23:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:10,814 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-09-24 20:23:10,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-09-24 20:23:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 20:23:10,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:10,816 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 20:23:10,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:10,817 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 3 times [2020-09-24 20:23:10,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:10,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244408207] [2020-09-24 20:23:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 20:23:12,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1874 [2020-09-24 20:23:12,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 20:23:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:12,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:14,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1881 [2020-09-24 20:23:14,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:14,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 20:23:14,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:14,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:14,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:14,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:14,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:14,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 20:23:14,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244408207] [2020-09-24 20:23:14,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:14,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:23:14,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334151362] [2020-09-24 20:23:14,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:14,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:14,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:14,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:14,961 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-09-24 20:23:15,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:15,107 INFO L93 Difference]: Finished difference Result 113 states and 153 transitions. [2020-09-24 20:23:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:23:15,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-09-24 20:23:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:15,114 INFO L225 Difference]: With dead ends: 113 [2020-09-24 20:23:15,114 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 20:23:15,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 20:23:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-24 20:23:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 20:23:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-09-24 20:23:15,134 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 55 [2020-09-24 20:23:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:15,135 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-09-24 20:23:15,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-09-24 20:23:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 20:23:15,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:15,138 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:15,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:15,138 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:15,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1106616419, now seen corresponding path program 4 times [2020-09-24 20:23:15,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:15,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087879502] [2020-09-24 20:23:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 20:23:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:23:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:23:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:23:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:20,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2266 [2020-09-24 20:23:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:23:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:25,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:25,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3291 [2020-09-24 20:23:25,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:26,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 20:23:26,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:23:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:26,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:26,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:26,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 56 proven. 38 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 20:23:26,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087879502] [2020-09-24 20:23:26,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:26,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:23:26,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457470618] [2020-09-24 20:23:26,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:23:26,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:26,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:23:26,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:26,196 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 12 states. [2020-09-24 20:23:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:26,351 INFO L93 Difference]: Finished difference Result 122 states and 171 transitions. [2020-09-24 20:23:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:23:26,352 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-24 20:23:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:26,353 INFO L225 Difference]: With dead ends: 122 [2020-09-24 20:23:26,353 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 20:23:26,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 20:23:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-24 20:23:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:23:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-09-24 20:23:26,373 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 73 [2020-09-24 20:23:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:26,374 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-09-24 20:23:26,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:23:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-09-24 20:23:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 20:23:26,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:26,378 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:26,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:26,378 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash -692654002, now seen corresponding path program 5 times [2020-09-24 20:23:26,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:26,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567898522] [2020-09-24 20:23:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 20:23:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 20:23:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 20:23:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:23:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:23:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 20:23:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 20:23:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 20:23:36,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:23:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:41,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:41,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:23:41,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:41,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:41,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:23:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:41,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:41,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:41,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:41,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:44,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2776 [2020-09-24 20:23:44,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:23:44,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:44,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-24 20:23:44,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:45,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:45,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:45,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:45,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:45,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:45,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:45,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:45,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:45,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:45,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 79 proven. 165 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-09-24 20:23:45,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567898522] [2020-09-24 20:23:45,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:45,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:45,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499911773] [2020-09-24 20:23:45,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:45,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:45,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:45,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:45,108 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 14 states. [2020-09-24 20:23:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:45,544 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2020-09-24 20:23:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:23:45,544 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 108 [2020-09-24 20:23:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:45,546 INFO L225 Difference]: With dead ends: 123 [2020-09-24 20:23:45,546 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 20:23:45,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:23:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 20:23:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-09-24 20:23:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 20:23:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-24 20:23:45,555 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 108 [2020-09-24 20:23:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:45,555 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-24 20:23:45,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-24 20:23:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 20:23:45,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:45,557 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:45,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:23:45,557 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:45,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1698410615, now seen corresponding path program 6 times [2020-09-24 20:23:45,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:45,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717162467] [2020-09-24 20:23:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:50,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:23:50,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 20:23:50,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 20:23:50,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:50,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking...