/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=SMALLEST --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_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:13:31,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:13:31,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:13:31,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:13:31,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:13:31,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:13:31,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:13:31,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:13:31,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:13:31,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:13:31,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:13:31,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:13:31,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:13:31,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:13:31,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:13:31,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:13:31,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:13:31,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:13:31,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:13:31,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:13:31,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:13:31,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:13:31,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:13:31,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:13:31,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:13:31,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:13:31,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:13:31,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:13:31,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:13:31,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:13:31,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:13:31,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:13:31,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:13:31,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:13:31,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:13:31,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:13:31,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:13:31,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:13:31,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:13:31,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:13:31,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:13:31,187 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 18:13:31,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:13:31,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:13:31,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:13:31,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:13:31,214 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:13:31,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:13:31,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:13:31,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:13:31,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:13:31,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:13:31,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:13:31,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:13:31,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:13:31,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:13:31,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:13:31,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:13:31,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:13:31,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:13:31,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:13:31,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:13:31,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:13:31,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:13:31,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:13:31,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:13:31,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:13:31,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:13:31,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:13:31,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:13:31,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:13:31,220 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:13:31,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:13:31,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:13:31,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:13:31,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:13:31,707 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:13:31,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-24 18:13:31,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d4dc3e8/fa283738be9b4324b63660a76665a5d2/FLAGe784ec531 [2020-09-24 18:13:32,326 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:13:32,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-24 18:13:32,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d4dc3e8/fa283738be9b4324b63660a76665a5d2/FLAGe784ec531 [2020-09-24 18:13:32,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d4dc3e8/fa283738be9b4324b63660a76665a5d2 [2020-09-24 18:13:32,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:13:32,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:13:32,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:32,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:13:32,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:13:32,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:32,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32, skipping insertion in model container [2020-09-24 18:13:32,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:32,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:13:32,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:13:32,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:32,940 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:13:32,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:32,977 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:13:32,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32 WrapperNode [2020-09-24 18:13:32,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:32,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:13:32,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:13:32,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:13:32,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:32,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:32,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:32,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:33,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:33,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:33,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (1/1) ... [2020-09-24 18:13:33,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:13:33,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:13:33,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:13:33,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:13:33,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (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 18:13:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:13:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:13:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 18:13:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 18:13:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:13:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:13:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:13:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 18:13:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 18:13:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:13:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:13:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:13:33,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:13:33,420 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:13:33,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:33 BoogieIcfgContainer [2020-09-24 18:13:33,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:13:33,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:13:33,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:13:33,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:13:33,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:13:32" (1/3) ... [2020-09-24 18:13:33,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de20fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:33, skipping insertion in model container [2020-09-24 18:13:33,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:32" (2/3) ... [2020-09-24 18:13:33,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de20fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:33, skipping insertion in model container [2020-09-24 18:13:33,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:33" (3/3) ... [2020-09-24 18:13:33,441 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-24 18:13:33,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:13:33,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:13:33,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:13:33,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:13:33,529 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:13:33,529 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:13:33,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:13:33,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:13:33,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:13:33,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:13:33,530 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:13:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 18:13:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:13:33,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:33,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:33,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:33,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 18:13:33,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:33,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702287371] [2020-09-24 18:13:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:33,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:13:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 18:13:33,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:13:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:33,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:33,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:33,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:33,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:33,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:33,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:13:33,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:33,928 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 18:13:33,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702287371] [2020-09-24 18:13:33,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:33,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:33,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617088701] [2020-09-24 18:13:33,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:33,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:33,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:33,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:33,959 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 18:13:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:34,102 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 18:13:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:34,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:13:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:34,119 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:13:34,119 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:13:34,124 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 18:13:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:13:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:13:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:34,183 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 18:13:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:34,184 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:34,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 18:13:34,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:34,187 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 18:13:34,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:13:34,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 18:13:34,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:34,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943807631] [2020-09-24 18:13:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:34,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:34,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:13:34,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 18:13:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:34,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:34,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:34,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:34,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:34,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 18:13:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:34,421 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 18:13:34,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943807631] [2020-09-24 18:13:34,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:34,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:34,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190392619] [2020-09-24 18:13:34,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:34,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:34,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:34,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:34,426 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 18:13:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:34,503 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 18:13:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:34,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 18:13:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:34,506 INFO L225 Difference]: With dead ends: 50 [2020-09-24 18:13:34,506 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:13:34,507 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 18:13:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:13:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 18:13:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:34,518 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 18:13:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:34,518 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:34,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:13:34,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:34,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:34,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:13:34,521 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 18:13:34,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:34,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318535358] [2020-09-24 18:13:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:34,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:13:35,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:35,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-24 18:13:35,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:35,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:13:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:35,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:35,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:13:35,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:35,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:35,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:13:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:35,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:35,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318535358] [2020-09-24 18:13:35,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:35,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:35,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547021027] [2020-09-24 18:13:35,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:35,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:35,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:35,336 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 18:13:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:35,429 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 18:13:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:35,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 18:13:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:35,432 INFO L225 Difference]: With dead ends: 82 [2020-09-24 18:13:35,432 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:13:35,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:13:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 18:13:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:13:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 18:13:35,444 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 18:13:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:35,445 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 18:13:35,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 18:13:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:13:35,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:35,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:35,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:13:35,449 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 18:13:35,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:35,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114516118] [2020-09-24 18:13:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:13:35,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-24 18:13:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:13:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:35,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:35,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:35,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:36,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:36,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-24 18:13:36,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:36,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:13:36,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:13:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:36,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114516118] [2020-09-24 18:13:36,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:36,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:13:36,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105249521] [2020-09-24 18:13:36,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:36,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:36,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:36,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:36,302 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 18:13:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:36,427 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 18:13:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:36,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 18:13:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:36,430 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:13:36,430 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:13:36,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:13:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 18:13:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:13:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 18:13:36,440 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 18:13:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:36,440 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 18:13:36,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 18:13:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:13:36,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:36,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:36,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:13:36,443 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:36,443 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 18:13:36,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:36,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855502509] [2020-09-24 18:13:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:13:36,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:36,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-24 18:13:36,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:13:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:36,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:13:37,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:37,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 18:13:37,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:37,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:13:37,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:37,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:13:37,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:37,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:13:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:13:37,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855502509] [2020-09-24 18:13:37,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:37,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:37,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751317541] [2020-09-24 18:13:37,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:37,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:37,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:37,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:37,174 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-09-24 18:13:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:37,272 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 18:13:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:37,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 18:13:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:37,275 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:37,275 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:13:37,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:13:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:13:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 18:13:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 18:13:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 18:13:37,286 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 18:13:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:37,287 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 18:13:37,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 18:13:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:13:37,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:37,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:37,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:13:37,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 18:13:37,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:37,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20805038] [2020-09-24 18:13:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:13:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:13:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:13:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:13:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:42,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:42,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:42,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:42,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:42,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:42,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:13:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-09-24 18:13:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:13:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:43,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:43,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:43,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:13:43,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:43,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:43,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:43,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:43,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:13:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:43,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:43,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:43,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:43,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:13:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:13:43,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20805038] [2020-09-24 18:13:43,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:43,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:43,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709122859] [2020-09-24 18:13:43,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:43,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:43,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:43,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:43,435 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-24 18:13:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:43,518 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-24 18:13:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:43,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 18:13:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:43,521 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:43,521 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:13:43,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:13:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:13:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:43,531 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-24 18:13:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:43,531 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:43,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:13:43,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:43,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:43,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:13:43,534 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:43,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 18:13:43,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:43,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171756148] [2020-09-24 18:13:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:13:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-09-24 18:13:45,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:45,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:13:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:13:46,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-24 18:13:46,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:13:46,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:13:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:47,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:47,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:47,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:13:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:47,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:13:47,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:13:47,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171756148] [2020-09-24 18:13:47,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:47,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:13:47,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314549940] [2020-09-24 18:13:47,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:47,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:47,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:47,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:47,068 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 18:13:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:47,189 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-09-24 18:13:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:47,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 18:13:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:47,191 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:13:47,191 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 18:13:47,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 18:13:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-24 18:13:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:47,201 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 18:13:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:47,201 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:47,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:13:47,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:47,204 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:47,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:13:47,204 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 18:13:47,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:47,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703489020] [2020-09-24 18:13:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:52,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:13:52,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:13:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:13:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:13:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:13:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:52,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:13:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 18:13:57,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:13:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:13:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:57,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:57,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:13:57,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:57,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:13:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:57,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:57,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:13:57,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:57,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:57,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:57,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:57,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 18:13:57,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703489020] [2020-09-24 18:13:57,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:57,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:13:57,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906973702] [2020-09-24 18:13:57,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:13:57,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:13:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:13:57,633 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2020-09-24 18:13:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:57,781 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-09-24 18:13:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:13:57,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-24 18:13:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:57,783 INFO L225 Difference]: With dead ends: 80 [2020-09-24 18:13:57,783 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 18:13:57,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:13:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 18:13:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2020-09-24 18:13:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 18:13:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-09-24 18:13:57,804 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 69 [2020-09-24 18:13:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:57,805 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-09-24 18:13:57,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:13:57,806 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-09-24 18:13:57,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 18:13:57,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:57,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:57,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:13:57,808 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:57,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-24 18:13:57,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:57,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134874668] [2020-09-24 18:13:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:02,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:14:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:14:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:14:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:14:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:02,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:02,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 18:14:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:14:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:14:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:14:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:14:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:14:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 18:14:07,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:07,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:07,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:07,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 18:14:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:14:08,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:14:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 18:14:08,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:14:08,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:08,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:14:08,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:08,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:08,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:14:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:14:08,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 18:14:08,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134874668] [2020-09-24 18:14:08,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:08,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:14:08,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068072682] [2020-09-24 18:14:08,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:14:08,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:14:08,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:14:08,175 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 7 states. [2020-09-24 18:14:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:08,295 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2020-09-24 18:14:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:14:08,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-24 18:14:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:08,298 INFO L225 Difference]: With dead ends: 128 [2020-09-24 18:14:08,298 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 18:14:08,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 18:14:08,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-24 18:14:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 18:14:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-09-24 18:14:08,316 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 71 [2020-09-24 18:14:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:08,317 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-09-24 18:14:08,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:14:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-09-24 18:14:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 18:14:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:08,321 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:08,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:14:08,322 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-24 18:14:08,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:08,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857862904] [2020-09-24 18:14:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:13,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:14:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:14:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:14:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:14:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-24 18:14:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:13,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:13,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 18:14:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:14:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:14:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:14:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:14:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:23,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:14:23,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4817 [2020-09-24 18:14:23,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:14:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:23,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:14:23,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:23,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:23,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:14:23,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:23,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:23,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:14:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 757 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:24,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 18:14:24,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:24,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:24,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:24,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:24,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:24,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:24,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 56 proven. 36 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-24 18:14:24,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857862904] [2020-09-24 18:14:24,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:24,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:14:24,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764912258] [2020-09-24 18:14:24,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:14:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:24,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:14:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:14:24,436 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 12 states. [2020-09-24 18:14:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:24,767 INFO L93 Difference]: Finished difference Result 149 states and 207 transitions. [2020-09-24 18:14:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:14:24,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-09-24 18:14:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:24,769 INFO L225 Difference]: With dead ends: 149 [2020-09-24 18:14:24,770 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 18:14:24,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:14:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 18:14:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-09-24 18:14:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 18:14:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2020-09-24 18:14:24,781 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 105 [2020-09-24 18:14:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:24,781 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2020-09-24 18:14:24,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:14:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2020-09-24 18:14:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 18:14:24,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:24,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:24,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:14:24,784 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:24,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:24,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 1 times [2020-09-24 18:14:24,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:24,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895819166] [2020-09-24 18:14:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:24,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 18:14:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:14:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:25,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 18:14:25,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:25,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-24 18:14:25,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:14:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 18:14:25,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 18:14:25,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:14:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:25,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:25,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:25,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:25,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 18:14:25,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:14:25,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:26,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:26,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:26,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:14:26,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:26,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:26,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:26,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:14:26,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:26,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:14:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:26,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:26,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:26,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:26,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:14:26,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:26,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:26,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:26,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:26,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:26,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:26,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:26,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:14:26,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-24 18:14:26,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895819166] [2020-09-24 18:14:26,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:26,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:14:26,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548023791] [2020-09-24 18:14:26,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:14:26,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:26,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:14:26,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:14:26,344 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand 17 states. [2020-09-24 18:14:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:26,800 INFO L93 Difference]: Finished difference Result 148 states and 205 transitions. [2020-09-24 18:14:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:14:26,800 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 87 [2020-09-24 18:14:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:26,803 INFO L225 Difference]: With dead ends: 148 [2020-09-24 18:14:26,803 INFO L226 Difference]: Without dead ends: 142 [2020-09-24 18:14:26,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-09-24 18:14:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-24 18:14:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2020-09-24 18:14:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-24 18:14:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-09-24 18:14:26,828 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 87 [2020-09-24 18:14:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:26,829 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-09-24 18:14:26,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:14:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-09-24 18:14:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 18:14:26,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:26,839 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:26,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:14:26,839 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:26,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1648734592, now seen corresponding path program 2 times [2020-09-24 18:14:26,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:26,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257908916] [2020-09-24 18:14:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat