/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=0.6 --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_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:35:44,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:35:44,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:35:44,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:35:44,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:35:44,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:35:44,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:35:44,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:35:44,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:35:44,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:35:44,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:35:44,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:35:44,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:35:44,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:35:44,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:35:44,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:35:44,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:35:44,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:35:44,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:35:44,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:35:44,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:35:44,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:35:44,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:35:44,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:35:44,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:35:44,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:35:44,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:35:44,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:35:44,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:35:44,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:35:44,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:35:44,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:35:44,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:35:44,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:35:44,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:35:44,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:35:44,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:35:44,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:35:44,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:35:44,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:35:44,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:35:44,761 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 06:35:44,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:35:44,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:35:44,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:35:44,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:35:44,809 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:35:44,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:35:44,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:35:44,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:35:44,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:35:44,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:35:44,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:35:44,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:35:44,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:35:44,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:35:44,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:35:44,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:35:44,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:35:44,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:35:44,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:35:44,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:35:44,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:35:44,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:35:44,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:35:44,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:35:44,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:35:44,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:35:44,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:35:44,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:35:44,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:35:44,815 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:35:45,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:35:45,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:35:45,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:35:45,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:35:45,266 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:35:45,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 06:35:45,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7422801dd/83b33bb4971240929367c7e259a479a4/FLAG30284e6ce [2020-09-25 06:35:45,888 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:35:45,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 06:35:45,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7422801dd/83b33bb4971240929367c7e259a479a4/FLAG30284e6ce [2020-09-25 06:35:46,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7422801dd/83b33bb4971240929367c7e259a479a4 [2020-09-25 06:35:46,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:35:46,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:35:46,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:35:46,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:35:46,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:35:46,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46, skipping insertion in model container [2020-09-25 06:35:46,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:35:46,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:35:46,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:35:46,522 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:35:46,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:35:46,562 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:35:46,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46 WrapperNode [2020-09-25 06:35:46,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:35:46,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:35:46,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:35:46,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:35:46,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (1/1) ... [2020-09-25 06:35:46,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:35:46,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:35:46,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:35:46,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:35:46,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (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 06:35:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:35:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:35:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 06:35:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 06:35:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:35:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:35:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:35:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 06:35:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 06:35:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:35:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:35:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:35:47,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:35:47,056 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:35:47,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:35:47 BoogieIcfgContainer [2020-09-25 06:35:47,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:35:47,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:35:47,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:35:47,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:35:47,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:35:46" (1/3) ... [2020-09-25 06:35:47,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de653ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:35:47, skipping insertion in model container [2020-09-25 06:35:47,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:46" (2/3) ... [2020-09-25 06:35:47,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de653ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:35:47, skipping insertion in model container [2020-09-25 06:35:47,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:35:47" (3/3) ... [2020-09-25 06:35:47,071 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2020-09-25 06:35:47,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:35:47,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:35:47,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:35:47,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:35:47,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:35:47,166 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:35:47,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:35:47,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:35:47,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:35:47,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:35:47,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:35:47,210 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:35:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:35:47,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:47,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:47,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 06:35:47,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:47,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672791921] [2020-09-25 06:35:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:35:47,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:47,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 06:35:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:47,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:35:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:35:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:47,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:47,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:47,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:47,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:47,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:35:47,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:47,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:47,730 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 06:35:47,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672791921] [2020-09-25 06:35:47,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:47,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:35:47,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134524314] [2020-09-25 06:35:47,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:35:47,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:47,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:35:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:35:47,761 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:35:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:47,864 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 06:35:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:35:47,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:35:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:47,879 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:35:47,880 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 06:35:47,884 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 06:35:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 06:35:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 06:35:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:35:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:35:47,946 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 06:35:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:47,947 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:35:47,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:35:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:35:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:35:47,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:47,950 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 06:35:47,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:35:47,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 06:35:47,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:47,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861031478] [2020-09-25 06:35:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:35:48,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 06:35:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:48,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:48,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:48,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:35:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:48,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:48,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 06:35:48,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:48,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:48,250 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 06:35:48,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861031478] [2020-09-25 06:35:48,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:48,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:35:48,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508568098] [2020-09-25 06:35:48,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:35:48,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:35:48,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:35:48,259 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 06:35:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:48,335 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:35:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:35:48,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:35:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:48,338 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:35:48,338 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:35:48,340 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 06:35:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:35:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:35:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:35:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:35:48,351 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 06:35:48,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:48,352 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:35:48,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:35:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:35:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:35:48,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:48,354 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 06:35:48,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:35:48,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:48,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:48,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 06:35:48,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:48,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911099263] [2020-09-25 06:35:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:50,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:35:50,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1781 [2020-09-25 06:35:50,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:50,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:35:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:35:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:35:50,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:50,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-25 06:35:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:35:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 06:35:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:35:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:50,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:50,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:50,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:35:50,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:50,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:50,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:50,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:35:50,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:50,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:50,731 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 06:35:50,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911099263] [2020-09-25 06:35:50,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:50,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:35:50,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750310790] [2020-09-25 06:35:50,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:35:50,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:50,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:35:50,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:35:50,734 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 06:35:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:50,827 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 06:35:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:35:50,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 06:35:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:50,830 INFO L225 Difference]: With dead ends: 63 [2020-09-25 06:35:50,830 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 06:35:50,831 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 06:35:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 06:35:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 06:35:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:35:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:35:50,842 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 06:35:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:50,843 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:35:50,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:35:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:35:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:35:50,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:50,845 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 06:35:50,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:35:50,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 06:35:50,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:50,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129210041] [2020-09-25 06:35:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:54,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:54,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:35:54,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:35:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3230 [2020-09-25 06:35:54,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:54,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:35:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:35:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:54,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:54,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:54,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:54,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:54,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:54,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:54,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-09-25 06:35:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:54,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:35:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:55,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:55,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:35:55,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:55,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:55,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:55,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:55,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:55,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:55,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:35:55,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:55,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:55,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:55,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:55,101 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 06:35:55,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129210041] [2020-09-25 06:35:55,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:55,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:55,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123973852] [2020-09-25 06:35:55,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:55,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:55,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:55,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:55,104 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 06:35:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:55,225 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 06:35:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:35:55,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:35:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:55,228 INFO L225 Difference]: With dead ends: 67 [2020-09-25 06:35:55,228 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 06:35:55,229 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 06:35:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 06:35:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2020-09-25 06:35:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 06:35:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 06:35:55,239 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 06:35:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:55,240 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 06:35:55,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:55,240 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 06:35:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:35:55,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:55,242 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 06:35:55,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:35:55,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:55,243 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 06:35:55,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:55,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564847059] [2020-09-25 06:35:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:56,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:35:56,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-25 06:35:56,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:56,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:35:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:35:56,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:56,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:56,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:56,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:35:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:56,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:35:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:56,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:56,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:35:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:56,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:56,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:56,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:35:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:56,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:56,358 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 06:35:56,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564847059] [2020-09-25 06:35:56,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:56,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:56,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402397787] [2020-09-25 06:35:56,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:56,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:56,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:56,361 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-09-25 06:35:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:56,454 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 06:35:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:35:56,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:35:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:56,456 INFO L225 Difference]: With dead ends: 71 [2020-09-25 06:35:56,456 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:35:56,457 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 06:35:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:35:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-09-25 06:35:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:35:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 06:35:56,468 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 06:35:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:56,469 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 06:35:56,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 06:35:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:35:56,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:56,471 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 06:35:56,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:35:56,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:56,472 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 06:35:56,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:56,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280542533] [2020-09-25 06:35:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:57,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:57,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:35:57,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:35:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1498 [2020-09-25 06:35:57,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:57,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:35:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:35:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:35:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:58,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:58,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:58,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:58,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:58,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:35:58,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 06:35:58,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:58,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:35:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:58,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:58,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:35:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:58,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:35:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:58,591 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 06:35:58,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280542533] [2020-09-25 06:35:58,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:58,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:58,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125591493] [2020-09-25 06:35:58,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:58,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:58,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:58,594 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 06:35:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:58,713 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 06:35:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:35:58,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 06:35:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:58,717 INFO L225 Difference]: With dead ends: 75 [2020-09-25 06:35:58,717 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 06:35:58,719 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 06:35:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 06:35:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 06:35:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:35:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:35:58,736 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 06:35:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:58,737 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:35:58,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:35:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 06:35:58,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:58,751 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 06:35:58,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:35:58,754 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2066677686, now seen corresponding path program 1 times [2020-09-25 06:35:58,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:58,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656012230] [2020-09-25 06:35:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:59,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:36:03,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:36:03,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:36:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:03,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:06,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:36:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2271 [2020-09-25 06:36:06,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:06,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:36:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:06,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:06,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:06,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:06,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 06:36:06,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:06,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:06,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:06,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:06,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:36:06,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:06,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:06,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:06,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:36:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:06,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:36:06,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656012230] [2020-09-25 06:36:06,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:06,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:36:06,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527500398] [2020-09-25 06:36:06,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:36:06,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:06,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:36:06,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:06,315 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 06:36:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:06,496 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 06:36:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:36:06,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-25 06:36:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:06,499 INFO L225 Difference]: With dead ends: 78 [2020-09-25 06:36:06,499 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 06:36:06,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:36:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 06:36:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 06:36:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 06:36:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 06:36:06,523 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 50 [2020-09-25 06:36:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:06,523 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 06:36:06,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:36:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 06:36:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:36:06,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:06,527 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:06,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:36:06,527 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:06,527 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 06:36:06,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:06,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205971166] [2020-09-25 06:36:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:36:11,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:36:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:36:11,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:36:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:36:16,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:36:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:36:16,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:36:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:36:16,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:16,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:36:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:16,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:16,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:36:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:17,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 06:36:17,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:17,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:36:17,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:17,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:36:17,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 06:36:17,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205971166] [2020-09-25 06:36:17,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:17,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:36:17,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393592398] [2020-09-25 06:36:17,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:36:17,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:17,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:36:17,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:36:17,194 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 12 states. [2020-09-25 06:36:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:17,568 INFO L93 Difference]: Finished difference Result 162 states and 260 transitions. [2020-09-25 06:36:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:17,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-09-25 06:36:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:17,571 INFO L225 Difference]: With dead ends: 162 [2020-09-25 06:36:17,571 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 06:36:17,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:36:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 06:36:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-09-25 06:36:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 06:36:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2020-09-25 06:36:17,587 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 69 [2020-09-25 06:36:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:17,588 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2020-09-25 06:36:17,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:36:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2020-09-25 06:36:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 06:36:17,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:17,594 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 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 06:36:17,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:36:17,595 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 2 times [2020-09-25 06:36:17,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:17,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977109333] [2020-09-25 06:36:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:22,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 06:36:22,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:36:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:36:22,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:22,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:36:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:22,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:22,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 06:36:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:36:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:28,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-09-25 06:36:28,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:28,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:28,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:36:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:28,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:28,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:28,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:28,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:28,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:36:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:29,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 06:36:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:29,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:29,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:29,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:36:29,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:29,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:29,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:29,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:36:29,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:29,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:29,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:29,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:29,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:29,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:29,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:29,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 06:36:29,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977109333] [2020-09-25 06:36:29,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:29,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:29,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861829134] [2020-09-25 06:36:29,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:29,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:29,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:29,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:29,558 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand 10 states. [2020-09-25 06:36:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:29,756 INFO L93 Difference]: Finished difference Result 176 states and 273 transitions. [2020-09-25 06:36:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:29,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-09-25 06:36:29,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:29,758 INFO L225 Difference]: With dead ends: 176 [2020-09-25 06:36:29,758 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 06:36:29,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:36:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 06:36:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-09-25 06:36:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 06:36:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-09-25 06:36:29,783 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 101 [2020-09-25 06:36:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:29,784 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-09-25 06:36:29,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:36:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-09-25 06:36:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 06:36:29,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:29,789 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 06:36:29,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:36:29,789 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 06:36:29,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:29,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211893592] [2020-09-25 06:36:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:29,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 06:36:34,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 06:36:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:36:34,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:34,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:36:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:34,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 06:36:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:36:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:40,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:40,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-09-25 06:36:40,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:40,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:40,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:40,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:36:40,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:40,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:40,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:40,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:40,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:40,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:36:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-25 06:36:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:36:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:41,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:41,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:36:41,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:41,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:41,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:41,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:41,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 79 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 06:36:41,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211893592] [2020-09-25 06:36:41,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:41,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:41,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577864742] [2020-09-25 06:36:41,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:41,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:41,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:41,952 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 10 states.