/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=NARROWEST --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/Fibonacci05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:00:33,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:00:33,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:00:33,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:00:33,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:00:33,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:00:33,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:00:33,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:00:33,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:00:33,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:00:33,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:00:33,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:00:33,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:00:33,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:00:33,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:00:33,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:00:33,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:00:33,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:00:33,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:00:33,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:00:33,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:00:33,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:00:33,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:00:33,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:00:33,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:00:33,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:00:33,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:00:33,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:00:33,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:00:33,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:00:33,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:00:33,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:00:33,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:00:33,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:00:33,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:00:33,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:00:33,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:00:33,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:00:33,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:00:33,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:00:33,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:00:33,203 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 [2020-09-25 02:00:33,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:00:33,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:00:33,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:00:33,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:00:33,231 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:00:33,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:00:33,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:00:33,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:00:33,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:00:33,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:00:33,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:00:33,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:00:33,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:00:33,233 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:00:33,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:00:33,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:00:33,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:00:33,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:00:33,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:00:33,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:00:33,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:00:33,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:33,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:00:33,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:00:33,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:00:33,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:00:33,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:00:33,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:00:33,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:00:33,241 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:00:33,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:00:33,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:00:33,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:00:33,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:00:33,787 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:00:33,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 02:00:33,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1c8c3bf6/96668301532d4e4ebeeea15736b0833f/FLAG7b349ef6f [2020-09-25 02:00:34,388 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:00:34,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 02:00:34,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1c8c3bf6/96668301532d4e4ebeeea15736b0833f/FLAG7b349ef6f [2020-09-25 02:00:34,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1c8c3bf6/96668301532d4e4ebeeea15736b0833f [2020-09-25 02:00:34,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:00:34,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:00:34,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:34,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:00:34,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:00:34,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:34" (1/1) ... [2020-09-25 02:00:34,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280c5647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:34, skipping insertion in model container [2020-09-25 02:00:34,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:34" (1/1) ... [2020-09-25 02:00:34,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:00:34,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:00:35,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:35,045 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:00:35,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:35,085 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:00:35,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35 WrapperNode [2020-09-25 02:00:35,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:35,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:00:35,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:00:35,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:00:35,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (1/1) ... [2020-09-25 02:00:35,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:00:35,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:00:35,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:00:35,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:00:35,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (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 [2020-09-25 02:00:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:00:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:00:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 02:00:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:00:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:00:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:00:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 02:00:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:00:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:00:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:00:35,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:00:35,626 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:00:35,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:35 BoogieIcfgContainer [2020-09-25 02:00:35,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:00:35,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:00:35,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:00:35,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:00:35,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:34" (1/3) ... [2020-09-25 02:00:35,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60981400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:35, skipping insertion in model container [2020-09-25 02:00:35,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:35" (2/3) ... [2020-09-25 02:00:35,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60981400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:35, skipping insertion in model container [2020-09-25 02:00:35,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:35" (3/3) ... [2020-09-25 02:00:35,642 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2020-09-25 02:00:35,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:00:35,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:00:35,690 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:00:35,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:00:35,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:00:35,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:00:35,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:00:35,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:00:35,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:00:35,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:00:35,725 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:00:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 02:00:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 02:00:35,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:35,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:35,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:35,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 02:00:35,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:35,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493187152] [2020-09-25 02:00:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:00:36,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 02:00:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:00:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:00:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:00:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:36,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:00:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:36,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493187152] [2020-09-25 02:00:36,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:36,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:00:36,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542524278] [2020-09-25 02:00:36,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:36,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:36,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:36,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:36,187 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 02:00:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:36,313 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 02:00:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:36,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 02:00:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:36,336 INFO L225 Difference]: With dead ends: 48 [2020-09-25 02:00:36,336 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:00:36,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:00:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:00:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:00:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:00:36,400 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 02:00:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:36,401 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:00:36,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:00:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 02:00:36,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:36,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:36,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:00:36,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 02:00:36,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:36,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241907972] [2020-09-25 02:00:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 02:00:36,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 02:00:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:00:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:00:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:36,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:36,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:36,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:00:36,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:36,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241907972] [2020-09-25 02:00:36,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:36,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:00:36,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064957926] [2020-09-25 02:00:36,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:36,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:36,619 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 02:00:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:36,711 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 02:00:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:36,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 02:00:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:36,714 INFO L225 Difference]: With dead ends: 38 [2020-09-25 02:00:36,714 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 02:00:36,715 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 [2020-09-25 02:00:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 02:00:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 02:00:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:00:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:00:36,725 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 02:00:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:36,726 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:00:36,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:00:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:00:36,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:36,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:36,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:00:36,729 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:36,729 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 02:00:36,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:36,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002426879] [2020-09-25 02:00:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:00:37,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 02:00:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:00:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:37,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:00:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:37,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:00:37,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 02:00:37,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:00:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:00:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:00:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:00:37,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002426879] [2020-09-25 02:00:37,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:37,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:37,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545604306] [2020-09-25 02:00:37,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:37,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:37,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:37,675 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-09-25 02:00:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:37,764 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-09-25 02:00:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:37,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 02:00:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:37,766 INFO L225 Difference]: With dead ends: 54 [2020-09-25 02:00:37,766 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 02:00:37,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 02:00:37,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-25 02:00:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 02:00:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-25 02:00:37,776 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 35 [2020-09-25 02:00:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:37,777 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-25 02:00:37,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-25 02:00:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:00:37,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:37,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:37,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:00:37,780 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 02:00:37,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:37,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658062120] [2020-09-25 02:00:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:38,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:00:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 02:00:38,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:38,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:38,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:00:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:00:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:38,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:38,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:38,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:38,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 02:00:38,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:00:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:38,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 02:00:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:00:38,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:00:38,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658062120] [2020-09-25 02:00:38,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:38,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:00:38,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634850905] [2020-09-25 02:00:38,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:38,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:38,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:38,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:38,577 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-09-25 02:00:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:38,740 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-09-25 02:00:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:38,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:00:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:38,743 INFO L225 Difference]: With dead ends: 72 [2020-09-25 02:00:38,743 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 02:00:38,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 02:00:38,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 02:00:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 02:00:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-09-25 02:00:38,757 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2020-09-25 02:00:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:38,757 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-09-25 02:00:38,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-09-25 02:00:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 02:00:38,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:38,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:38,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:00:38,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash 331377205, now seen corresponding path program 2 times [2020-09-25 02:00:38,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:38,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958630530] [2020-09-25 02:00:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:43,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 02:00:43,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:00:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4441 [2020-09-25 02:00:43,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 02:00:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:00:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:43,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:00:44,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-09-25 02:00:44,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:00:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:00:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:44,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:44,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-25 02:00:44,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:00:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:44,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:44,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:44,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 02:00:44,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:44,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:44,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:00:44,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:44,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:44,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:44,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:44,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:44,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 02:00:44,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958630530] [2020-09-25 02:00:44,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:44,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:00:44,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398101550] [2020-09-25 02:00:44,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:00:44,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:44,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:00:44,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:44,555 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 8 states. [2020-09-25 02:00:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:44,709 INFO L93 Difference]: Finished difference Result 88 states and 123 transitions. [2020-09-25 02:00:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:44,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 02:00:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:44,712 INFO L225 Difference]: With dead ends: 88 [2020-09-25 02:00:44,712 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 02:00:44,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:00:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 02:00:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-25 02:00:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 02:00:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-09-25 02:00:44,724 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 53 [2020-09-25 02:00:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:44,725 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-09-25 02:00:44,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:00:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-09-25 02:00:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:00:44,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:44,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:44,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:00:44,728 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2068833840, now seen corresponding path program 3 times [2020-09-25 02:00:44,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:44,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172403777] [2020-09-25 02:00:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:00:47,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2381 [2020-09-25 02:00:47,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:00:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 02:00:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:00:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:47,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:47,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:48,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-09-25 02:00:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:00:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:00:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:00:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:48,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:48,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:48,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:00:48,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 02:00:48,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172403777] [2020-09-25 02:00:48,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:48,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:48,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108212506] [2020-09-25 02:00:48,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:48,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:48,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:48,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:48,970 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 6 states. [2020-09-25 02:00:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:49,067 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-09-25 02:00:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:49,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 02:00:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:49,070 INFO L225 Difference]: With dead ends: 64 [2020-09-25 02:00:49,070 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:00:49,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:00:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 02:00:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:00:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-09-25 02:00:49,081 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 54 [2020-09-25 02:00:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:49,082 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-09-25 02:00:49,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-09-25 02:00:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 02:00:49,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:49,086 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:49,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:00:49,086 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash -911174345, now seen corresponding path program 4 times [2020-09-25 02:00:49,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:49,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346783491] [2020-09-25 02:00:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:54,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 02:00:54,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:00:54,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 02:00:54,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 02:00:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:00:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:54,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:54,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:00:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:00:59,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 02:00:59,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:00:59,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:00:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:59,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:59,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:59,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:59,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:59,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 02:00:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:00:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:59,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:59,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 02:00:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:59,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 02:00:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:00:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:00:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:00,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:00,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:00,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 115 proven. 15 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-25 02:01:00,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346783491] [2020-09-25 02:01:00,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:00,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:01:00,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001337800] [2020-09-25 02:01:00,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:01:00,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:00,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:01:00,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:00,045 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 9 states. [2020-09-25 02:01:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:00,207 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2020-09-25 02:01:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:01:00,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-25 02:01:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:00,210 INFO L225 Difference]: With dead ends: 99 [2020-09-25 02:01:00,210 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 02:01:00,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:01:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 02:01:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-25 02:01:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 02:01:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-25 02:01:00,225 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 89 [2020-09-25 02:01:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:00,225 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-25 02:01:00,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:01:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-25 02:01:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 02:01:00,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:00,229 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:00,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:01:00,231 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:00,231 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 5 times [2020-09-25 02:01:00,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:00,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683676504] [2020-09-25 02:01:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:05,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:05,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:05,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:05,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:01:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:01:10,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:01:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:01:10,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:01:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:10,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:10,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:10,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:10,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:10,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:10,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2560 [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:13,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:13,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:13,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:13,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:13,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:01:13,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:13,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 77 proven. 69 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-25 02:01:13,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683676504] [2020-09-25 02:01:13,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:13,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:01:13,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334331710] [2020-09-25 02:01:13,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:01:13,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:01:13,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:13,247 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 10 states. [2020-09-25 02:01:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:13,540 INFO L93 Difference]: Finished difference Result 98 states and 130 transitions. [2020-09-25 02:01:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:01:13,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 02:01:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:13,543 INFO L225 Difference]: With dead ends: 98 [2020-09-25 02:01:13,543 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 02:01:13,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:01:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 02:01:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 02:01:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 02:01:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-09-25 02:01:13,563 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 89 [2020-09-25 02:01:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:13,567 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-09-25 02:01:13,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:01:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-09-25 02:01:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 02:01:13,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:13,573 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 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] [2020-09-25 02:01:13,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:01:13,573 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2047266186, now seen corresponding path program 6 times [2020-09-25 02:01:13,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:13,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463783261] [2020-09-25 02:01:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:01:18,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:01:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:01:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 02:01:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:18,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:18,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:01:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:01:23,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:01:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:24,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:24,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:24,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:24,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:24,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:01:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:24,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:24,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:24,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 47 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 02:01:24,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463783261] [2020-09-25 02:01:24,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:24,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:01:24,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360510674] [2020-09-25 02:01:24,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:01:24,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:24,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:01:24,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:01:24,264 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 12 states. [2020-09-25 02:01:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:24,441 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2020-09-25 02:01:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:01:24,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-25 02:01:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:24,447 INFO L225 Difference]: With dead ends: 112 [2020-09-25 02:01:24,448 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 02:01:24,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:01:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 02:01:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2020-09-25 02:01:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:01:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-09-25 02:01:24,457 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 71 [2020-09-25 02:01:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:24,458 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-09-25 02:01:24,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:01:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-09-25 02:01:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 02:01:24,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:24,459 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:24,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:01:24,460 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:24,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 7 times [2020-09-25 02:01:24,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:24,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848955752] [2020-09-25 02:01:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 02:01:29,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 02:01:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:01:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 02:01:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:01:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:29,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:01:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking...