/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:44:15,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:44:15,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:44:15,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:44:15,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:44:15,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:44:15,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:44:15,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:44:15,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:44:15,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:44:15,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:44:15,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:44:15,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:44:15,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:44:15,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:44:15,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:44:15,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:44:15,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:44:15,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:44:15,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:44:15,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:44:15,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:44:15,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:44:15,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:44:15,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:44:15,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:44:15,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:44:15,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:44:15,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:44:15,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:44:15,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:44:15,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:44:15,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:44:15,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:44:15,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:44:15,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:44:15,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:44:15,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:44:15,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:44:15,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:44:15,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:44:15,190 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 07:44:15,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:44:15,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:44:15,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:44:15,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:44:15,241 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:44:15,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:44:15,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:44:15,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:44:15,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:44:15,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:44:15,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:44:15,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:44:15,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:44:15,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:44:15,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:44:15,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:44:15,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:44:15,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:44:15,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:44:15,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:44:15,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:44:15,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:44:15,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:44:15,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:44:15,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:44:15,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:44:15,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:44:15,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:44:15,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:44:15,249 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:44:15,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:44:15,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:44:15,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:44:15,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:44:15,758 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:44:15,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 07:44:15,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15936ee4a/a8a44a031546493e8350c35e29550b8c/FLAGe12b39598 [2020-09-25 07:44:16,429 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:44:16,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 07:44:16,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15936ee4a/a8a44a031546493e8350c35e29550b8c/FLAGe12b39598 [2020-09-25 07:44:16,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15936ee4a/a8a44a031546493e8350c35e29550b8c [2020-09-25 07:44:16,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:44:16,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:44:16,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:44:16,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:44:16,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:44:16,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:44:16" (1/1) ... [2020-09-25 07:44:16,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49320105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:16, skipping insertion in model container [2020-09-25 07:44:16,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:44:16" (1/1) ... [2020-09-25 07:44:16,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:44:16,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:44:17,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:44:17,171 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:44:17,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:44:17,215 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:44:17,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17 WrapperNode [2020-09-25 07:44:17,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:44:17,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:44:17,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:44:17,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:44:17,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (1/1) ... [2020-09-25 07:44:17,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:44:17,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:44:17,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:44:17,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:44:17,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (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 07:44:17,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:44:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:44:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 07:44:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 07:44:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:44:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:44:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:44:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 07:44:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 07:44:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:44:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:44:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:44:17,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:44:17,767 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:44:17,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:44:17 BoogieIcfgContainer [2020-09-25 07:44:17,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:44:17,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:44:17,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:44:17,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:44:17,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:44:16" (1/3) ... [2020-09-25 07:44:17,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28262a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:44:17, skipping insertion in model container [2020-09-25 07:44:17,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:44:17" (2/3) ... [2020-09-25 07:44:17,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28262a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:44:17, skipping insertion in model container [2020-09-25 07:44:17,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:44:17" (3/3) ... [2020-09-25 07:44:17,786 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-2.c [2020-09-25 07:44:17,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:44:17,808 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:44:17,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:44:17,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:44:17,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:44:17,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:44:17,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:44:17,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:44:17,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:44:17,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:44:17,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:44:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 07:44:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 07:44:17,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:17,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:17,892 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 07:44:17,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:17,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019169458] [2020-09-25 07:44:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:18,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:44:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 07:44:18,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:18,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:44:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:44:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:18,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:18,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:44:18,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:18,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:18,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:18,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:44:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:18,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:44:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:44:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:18,397 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 07:44:18,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019169458] [2020-09-25 07:44:18,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:44:18,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:44:18,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260031] [2020-09-25 07:44:18,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:44:18,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:18,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:44:18,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:44:18,429 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 07:44:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:18,514 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 07:44:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:44:18,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 07:44:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:18,530 INFO L225 Difference]: With dead ends: 58 [2020-09-25 07:44:18,531 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 07:44:18,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 07:44:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 07:44:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 07:44:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 07:44:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 07:44:18,597 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 07:44:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:18,598 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 07:44:18,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:44:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 07:44:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 07:44:18,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:18,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:18,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:44:18,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:18,602 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 07:44:18,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:18,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373897154] [2020-09-25 07:44:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:18,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:44:18,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 07:44:18,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:18,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:44:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:18,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:44:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:18,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:18,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 07:44:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:18,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:44:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:18,956 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 07:44:18,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373897154] [2020-09-25 07:44:18,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:44:18,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:44:18,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57526305] [2020-09-25 07:44:18,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:44:18,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:44:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:44:18,960 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 07:44:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:19,043 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 07:44:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:44:19,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 07:44:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:19,046 INFO L225 Difference]: With dead ends: 50 [2020-09-25 07:44:19,046 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 07:44:19,047 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 07:44:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 07:44:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 07:44:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 07:44:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 07:44:19,064 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 07:44:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:19,064 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 07:44:19,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:44:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 07:44:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 07:44:19,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:19,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:19,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:44:19,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 07:44:19,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:19,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832551475] [2020-09-25 07:44:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:21,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 07:44:21,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:44:21,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-09-25 07:44:21,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:21,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:44:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:44:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:21,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:21,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:21,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:21,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:21,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:21,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:21,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:21,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:44:21,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:21,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 07:44:21,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:21,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:44:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:21,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:44:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:21,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:44:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:44:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:21,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:21,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:44:21,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:21,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:44:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 07:44:21,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832551475] [2020-09-25 07:44:21,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:44:21,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:44:21,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819514898] [2020-09-25 07:44:21,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:44:21,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:21,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:44:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:44:21,592 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 07:44:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:21,715 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 07:44:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:44:21,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 07:44:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:21,721 INFO L225 Difference]: With dead ends: 63 [2020-09-25 07:44:21,721 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 07:44:21,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:44:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 07:44:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 07:44:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 07:44:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 07:44:21,743 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 07:44:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:21,744 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 07:44:21,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:44:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 07:44:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 07:44:21,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:21,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:21,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:44:21,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 07:44:21,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:21,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334098833] [2020-09-25 07:44:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:21,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:24,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:44:24,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:44:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-09-25 07:44:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:24,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:44:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:44:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:24,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:44:25,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:44:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-09-25 07:44:25,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:44:25,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:25,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:44:25,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:44:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:44:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:25,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:44:25,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:44:25,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334098833] [2020-09-25 07:44:25,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:25,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:44:25,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712360266] [2020-09-25 07:44:25,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:44:25,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:25,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:44:25,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:44:25,850 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 07:44:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:25,988 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-09-25 07:44:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:44:25,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 07:44:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:25,990 INFO L225 Difference]: With dead ends: 69 [2020-09-25 07:44:25,990 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 07:44:25,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:44:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 07:44:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-09-25 07:44:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 07:44:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 07:44:26,003 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 07:44:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:26,003 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 07:44:26,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:44:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 07:44:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 07:44:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:26,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:26,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:44:26,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:26,006 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 07:44:26,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:26,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911453051] [2020-09-25 07:44:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:26,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:44:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-09-25 07:44:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:26,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 07:44:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:44:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:26,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:26,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:26,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:44:26,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:26,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 07:44:26,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:26,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:44:26,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:27,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:27,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:27,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:44:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:27,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:44:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:44:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:27,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:27,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:44:27,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:27,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:44:27,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911453051] [2020-09-25 07:44:27,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:27,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:44:27,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953102356] [2020-09-25 07:44:27,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:44:27,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:27,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:44:27,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:44:27,084 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-09-25 07:44:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:27,170 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 07:44:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:44:27,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 07:44:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:27,173 INFO L225 Difference]: With dead ends: 71 [2020-09-25 07:44:27,173 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 07:44:27,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:44:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 07:44:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-09-25 07:44:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 07:44:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 07:44:27,184 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 07:44:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:27,185 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 07:44:27,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:44:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 07:44:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 07:44:27,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:27,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:27,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:44:27,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 07:44:27,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:27,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060159535] [2020-09-25 07:44:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:28,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:28,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:44:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:44:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-09-25 07:44:28,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:28,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 07:44:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:44:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:28,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:28,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:28,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:28,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:28,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:44:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 07:44:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:29,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:44:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:44:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:44:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:44:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:44:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:44:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:29,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:44:29,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060159535] [2020-09-25 07:44:29,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:29,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:44:29,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533026510] [2020-09-25 07:44:29,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:44:29,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:29,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:44:29,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:44:29,156 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 07:44:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:29,285 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 07:44:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:44:29,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 07:44:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:29,293 INFO L225 Difference]: With dead ends: 75 [2020-09-25 07:44:29,293 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 07:44:29,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:44:29,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 07:44:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 07:44:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 07:44:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 07:44:29,317 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 07:44:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:29,317 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 07:44:29,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:44:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 07:44:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 07:44:29,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:29,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:29,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:44:29,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:29,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:29,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2066677686, now seen corresponding path program 1 times [2020-09-25 07:44:29,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:29,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526881324] [2020-09-25 07:44:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:34,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:44:34,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:44:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:44:34,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:34,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:44:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:44:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:34,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:34,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:34,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:34,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:44:34,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:34,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:34,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:44:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:36,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:36,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:44:36,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:44:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-09-25 07:44:36,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:36,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:44:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:44:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:36,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:44:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:36,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:44:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 07:44:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:37,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:44:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:37,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:37,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:44:37,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:44:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:37,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:44:37,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526881324] [2020-09-25 07:44:37,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:37,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:44:37,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832061948] [2020-09-25 07:44:37,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:44:37,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:44:37,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:44:37,109 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 07:44:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:37,308 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 07:44:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:44:37,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-09-25 07:44:37,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:37,311 INFO L225 Difference]: With dead ends: 78 [2020-09-25 07:44:37,311 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 07:44:37,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:44:37,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 07:44:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 07:44:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 07:44:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 07:44:37,333 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 50 [2020-09-25 07:44:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:37,336 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 07:44:37,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:44:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 07:44:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 07:44:37,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:37,344 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:37,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:44:37,344 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 07:44:37,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:37,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245332723] [2020-09-25 07:44:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:37,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 07:44:42,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 07:44:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:44:42,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:42,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:44:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 07:44:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:42,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:42,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:47,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:44:47,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:44:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:44:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:47,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:44:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:44:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:47,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:44:47,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 07:44:47,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:47,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:44:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:47,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:47,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:47,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:44:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:47,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:47,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:47,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:47,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 07:44:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:47,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:44:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 07:44:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:47,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:44:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:47,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:44:47,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:47,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:47,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:47,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:44:47,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:48,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:44:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:44:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:48,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 07:44:48,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245332723] [2020-09-25 07:44:48,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:48,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:44:48,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602227381] [2020-09-25 07:44:48,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:44:48,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:48,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:44:48,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:44:48,035 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 8 states. [2020-09-25 07:44:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:48,179 INFO L93 Difference]: Finished difference Result 112 states and 173 transitions. [2020-09-25 07:44:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:44:48,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-25 07:44:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:48,181 INFO L225 Difference]: With dead ends: 112 [2020-09-25 07:44:48,182 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 07:44:48,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:44:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 07:44:48,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 64. [2020-09-25 07:44:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 07:44:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-25 07:44:48,198 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 71 [2020-09-25 07:44:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:48,201 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-25 07:44:48,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:44:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-25 07:44:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 07:44:48,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:48,203 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:48,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:44:48,205 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 07:44:48,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:48,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342802106] [2020-09-25 07:44:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:53,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 07:44:53,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:44:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:44:53,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:53,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:44:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:44:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:53,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:53,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:53,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:44:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:58,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:58,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 07:44:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-25 07:44:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:44:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:58,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 07:44:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:44:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:58,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:44:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:44:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:59,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:44:59,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:44:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:44:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:59,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:59,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:59,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:44:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:44:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:44:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 07:44:59,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:44:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:44:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:44:59,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:44:59,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:44:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:44:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:59,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:59,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:44:59,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:44:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:59,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:44:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:44:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 75 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 07:44:59,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342802106] [2020-09-25 07:44:59,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:59,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:44:59,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461072498] [2020-09-25 07:44:59,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:44:59,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:59,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:44:59,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:44:59,763 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 10 states. [2020-09-25 07:45:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:00,111 INFO L93 Difference]: Finished difference Result 158 states and 243 transitions. [2020-09-25 07:45:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:45:00,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-09-25 07:45:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:00,114 INFO L225 Difference]: With dead ends: 158 [2020-09-25 07:45:00,114 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 07:45:00,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:45:00,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 07:45:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-09-25 07:45:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 07:45:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2020-09-25 07:45:00,126 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 103 [2020-09-25 07:45:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:00,128 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2020-09-25 07:45:00,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:45:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2020-09-25 07:45:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 07:45:00,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:00,131 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:45:00,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:45:00,132 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:00,132 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-25 07:45:00,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:00,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370831194] [2020-09-25 07:45:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:45:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:10,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 07:45:10,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 07:45:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:45:10,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:10,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:45:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:45:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:45:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:45:10,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:10,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:45:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:10,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:45:10,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:10,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:10,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:10,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:10,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:10,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:10,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:10,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:10,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:45:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:10,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:10,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:10,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:45:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:45:12,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-09-25 07:45:12,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:45:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:45:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:12,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 07:45:12,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:45:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:45:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:45:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:12,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:12,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:12,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:45:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:12,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:45:12,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 59 proven. 25 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 07:45:12,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370831194] [2020-09-25 07:45:12,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:12,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:45:12,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972696653] [2020-09-25 07:45:12,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:45:12,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:45:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:45:12,464 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand 9 states.