/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-simple/fibo_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:23:49,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:23:49,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:23:49,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:23:49,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:23:49,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:23:49,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:23:49,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:23:49,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:23:49,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:23:49,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:23:49,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:23:49,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:23:49,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:23:49,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:23:49,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:23:49,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:23:49,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:23:49,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:23:49,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:23:49,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:23:49,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:23:49,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:23:49,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:23:49,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:23:49,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:23:49,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:23:49,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:23:49,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:23:49,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:23:49,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:23:49,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:23:49,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:23:49,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:23:49,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:23:49,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:23:49,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:23:49,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:23:49,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:23:49,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:23:49,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:23:49,361 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 20:23:49,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:23:49,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:23:49,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:23:49,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:23:49,391 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:23:49,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:23:49,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:23:49,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:23:49,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:23:49,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:23:49,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:23:49,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:23:49,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:23:49,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:23:49,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:23:49,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:23:49,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:23:49,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:23:49,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:23:49,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:23:49,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:23:49,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:49,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:23:49,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:23:49,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:23:49,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:23:49,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:23:49,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:23:49,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:23:49,396 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 20:23:49,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:23:49,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:23:49,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:23:49,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:23:49,896 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:23:49,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 20:23:50,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8a19e5b2/991d9241cb184a1f9f713fcd50701c91/FLAG18d0f0c37 [2020-09-24 20:23:50,552 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:50,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 20:23:50,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8a19e5b2/991d9241cb184a1f9f713fcd50701c91/FLAG18d0f0c37 [2020-09-24 20:23:50,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8a19e5b2/991d9241cb184a1f9f713fcd50701c91 [2020-09-24 20:23:50,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:50,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:50,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:50,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:50,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:50,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd7b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50, skipping insertion in model container [2020-09-24 20:23:50,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:50,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:51,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:51,226 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:51,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:51,263 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:51,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51 WrapperNode [2020-09-24 20:23:51,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:51,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:51,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:51,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:51,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (1/1) ... [2020-09-24 20:23:51,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:51,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:51,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:51,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:51,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (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 20:23:51,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:51,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:51,464 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:23:51,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:51,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:51,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:51,465 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:23:51,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:51,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:51,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:51,687 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:51,687 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:51,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:51 BoogieIcfgContainer [2020-09-24 20:23:51,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:51,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:51,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:51,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:51,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:50" (1/3) ... [2020-09-24 20:23:51,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d523a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:51, skipping insertion in model container [2020-09-24 20:23:51,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:51" (2/3) ... [2020-09-24 20:23:51,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d523a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:51, skipping insertion in model container [2020-09-24 20:23:51,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:51" (3/3) ... [2020-09-24 20:23:51,703 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2020-09-24 20:23:51,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:51,733 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:51,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:51,800 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:51,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:51,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:51,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:51,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:51,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:51,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:51,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:23:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:23:51,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:51,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:51,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:23:51,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:51,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530847299] [2020-09-24 20:23:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:52,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:23:52,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:52,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:52,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,162 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 20:23:52,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530847299] [2020-09-24 20:23:52,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:52,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:52,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960946559] [2020-09-24 20:23:52,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:52,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:52,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:52,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:52,189 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:23:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:52,321 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:23:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:52,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:23:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:52,337 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:23:52,337 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:23:52,341 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 20:23:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:23:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:23:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:52,397 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:23:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:52,398 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:52,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:23:52,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:52,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:52,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:52,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:23:52,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:52,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564104920] [2020-09-24 20:23:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:52,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:23:52,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:52,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:52,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:52,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:23:52,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,610 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 20:23:52,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564104920] [2020-09-24 20:23:52,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:52,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:52,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409325498] [2020-09-24 20:23:52,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:52,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:52,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:52,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:52,615 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:23:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:52,687 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:23:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:52,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:23:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:52,690 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:23:52,690 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:52,691 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 20:23:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:23:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:52,701 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:23:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:52,701 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:52,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:52,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:52,703 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] [2020-09-24 20:23:52,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:52,704 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:23:52,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:52,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916051999] [2020-09-24 20:23:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:53,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-09-24 20:23:53,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:53,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-24 20:23:53,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:53,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:53,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:53,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:53,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:53,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:53,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916051999] [2020-09-24 20:23:53,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:53,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:53,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017938344] [2020-09-24 20:23:53,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:53,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:53,926 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:23:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:54,033 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-24 20:23:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:54,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:23:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:54,036 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:23:54,037 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 20:23:54,038 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 20:23:54,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 20:23:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 20:23:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:23:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 20:23:54,049 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-24 20:23:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:54,050 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 20:23:54,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 20:23:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:54,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:54,052 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] [2020-09-24 20:23:54,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:54,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:54,054 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:23:54,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:54,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32695648] [2020-09-24 20:23:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:23:54,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-09-24 20:23:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:23:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:54,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:54,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 20:23:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:54,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:23:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:54,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:54,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:23:54,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:54,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32695648] [2020-09-24 20:23:54,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:54,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:23:54,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103231601] [2020-09-24 20:23:54,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:23:54,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:23:54,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:54,940 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-24 20:23:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:55,088 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2020-09-24 20:23:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:55,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 20:23:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:55,091 INFO L225 Difference]: With dead ends: 80 [2020-09-24 20:23:55,091 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 20:23:55,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 20:23:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-24 20:23:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:23:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-09-24 20:23:55,105 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 35 [2020-09-24 20:23:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:55,105 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-09-24 20:23:55,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:23:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-09-24 20:23:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:23:55,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:55,109 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] [2020-09-24 20:23:55,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:55,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 20:23:55,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:55,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43807810] [2020-09-24 20:23:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:24:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:24:00,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:24:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 20:24:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:00,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:00,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:01,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 20:24:01,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:24:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:24:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 20:24:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:24:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:01,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:24:01,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:24:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:24:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:01,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:01,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:24:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:24:01,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43807810] [2020-09-24 20:24:01,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:01,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:01,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80171850] [2020-09-24 20:24:01,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:01,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:01,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:01,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:01,352 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 8 states. [2020-09-24 20:24:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:01,547 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2020-09-24 20:24:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:24:01,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 20:24:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:01,550 INFO L225 Difference]: With dead ends: 88 [2020-09-24 20:24:01,550 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:24:01,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:24:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:24:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-24 20:24:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:24:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-09-24 20:24:01,561 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 51 [2020-09-24 20:24:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:01,561 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-09-24 20:24:01,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-09-24 20:24:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:24:01,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:01,564 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] [2020-09-24 20:24:01,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:24:01,565 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 20:24:01,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:01,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598749569] [2020-09-24 20:24:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:24:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1682 [2020-09-24 20:24:03,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:24:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:24:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:03,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:03,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:03,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:04,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-09-24 20:24:04,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:24:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:05,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-24 20:24:05,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:05,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:05,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:05,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:24:05,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:24:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:05,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:24:05,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598749569] [2020-09-24 20:24:05,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:05,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:24:05,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643607376] [2020-09-24 20:24:05,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:24:05,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:05,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:24:05,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:24:05,338 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2020-09-24 20:24:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:05,479 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-09-24 20:24:05,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:24:05,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 20:24:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:05,482 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:24:05,482 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:24:05,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:24:05,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-09-24 20:24:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:24:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-24 20:24:05,494 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 52 [2020-09-24 20:24:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:05,504 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-24 20:24:05,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:24:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-24 20:24:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 20:24:05,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:05,510 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:05,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:24:05,510 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:05,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 20:24:05,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:05,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671114988] [2020-09-24 20:24:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 20:24:10,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 20:24:10,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:24:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:24:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:24:10,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:10,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:10,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:13,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:15,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 20:24:15,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 20:24:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:24:15,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:24:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:24:15,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:24:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:20,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:24:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:20,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:20,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:21,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:21,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-24 20:24:21,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:24:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:21,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:21,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:21,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:24:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:24:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:21,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:21,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:24:21,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:24:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:21,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:21,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:21,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:24:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:26,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:24:26,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 20:24:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:24:26,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:24:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 20:24:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:29,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-09-24 20:24:29,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:24:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 20:24:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:24:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:24:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:29,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:24:29,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:24:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:29,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:29,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:29,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:29,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:24:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:29,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:29,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 127 proven. 219 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-09-24 20:24:29,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671114988] [2020-09-24 20:24:29,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:29,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:24:29,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211288579] [2020-09-24 20:24:29,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:24:29,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:29,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:24:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:24:29,888 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 17 states. [2020-09-24 20:24:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:30,254 INFO L93 Difference]: Finished difference Result 117 states and 179 transitions. [2020-09-24 20:24:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:24:30,255 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 123 [2020-09-24 20:24:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:30,257 INFO L225 Difference]: With dead ends: 117 [2020-09-24 20:24:30,257 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 20:24:30,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:24:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 20:24:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-09-24 20:24:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 20:24:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-09-24 20:24:30,268 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 123 [2020-09-24 20:24:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:30,268 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-09-24 20:24:30,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:24:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-09-24 20:24:30,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 20:24:30,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:30,271 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:30,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:24:30,271 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:30,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1618484333, now seen corresponding path program 4 times [2020-09-24 20:24:30,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:30,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674986945] [2020-09-24 20:24:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 20:24:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:24:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:24:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:24:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:35,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 20:24:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-24 20:24:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:40,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:45,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 20:24:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:24:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 20:24:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking...