/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=0.4 --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 05:27:05,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:27:05,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:27:05,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:27:05,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:27:05,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:27:05,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:27:05,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:27:05,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:27:05,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:27:05,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:27:05,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:27:05,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:27:05,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:27:05,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:27:05,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:27:05,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:27:05,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:27:05,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:27:05,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:27:05,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:27:05,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:27:05,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:27:05,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:27:05,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:27:05,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:27:05,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:27:05,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:27:05,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:27:05,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:27:05,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:27:05,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:27:05,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:27:05,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:27:05,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:27:05,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:27:05,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:27:05,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:27:05,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:27:05,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:27:05,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:27:05,993 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 05:27:06,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:27:06,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:27:06,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:27:06,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:27:06,021 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:27:06,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:27:06,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:27:06,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:27:06,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:27:06,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:27:06,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:27:06,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:27:06,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:27:06,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:27:06,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:27:06,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:27:06,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:27:06,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:27:06,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:27:06,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:27:06,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:27:06,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:06,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:27:06,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:27:06,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:27:06,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:27:06,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:27:06,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:27:06,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:27:06,027 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:27:06,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:27:06,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:27:06,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:27:06,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:27:06,508 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:27:06,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 05:27:06,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/622ed3c7e/62a69bbc49fe41ed8d0b685a1aa574ee/FLAG8937c9acd [2020-09-25 05:27:07,154 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:27:07,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 05:27:07,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/622ed3c7e/62a69bbc49fe41ed8d0b685a1aa574ee/FLAG8937c9acd [2020-09-25 05:27:07,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/622ed3c7e/62a69bbc49fe41ed8d0b685a1aa574ee [2020-09-25 05:27:07,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:27:07,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:27:07,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:07,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:27:07,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:27:07,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280c5647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07, skipping insertion in model container [2020-09-25 05:27:07,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:27:07,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:27:07,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:07,805 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:27:07,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:07,838 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:27:07,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07 WrapperNode [2020-09-25 05:27:07,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:07,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:27:07,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:27:07,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:27:07,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (1/1) ... [2020-09-25 05:27:07,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:27:07,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:27:07,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:27:07,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:27:07,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (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 05:27:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:27:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:27:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 05:27:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 05:27:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:27:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:27:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:27:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 05:27:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 05:27:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:27:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:27:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:27:08,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:27:08,315 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:27:08,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:08 BoogieIcfgContainer [2020-09-25 05:27:08,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:27:08,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:27:08,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:27:08,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:27:08,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:27:07" (1/3) ... [2020-09-25 05:27:08,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718ad674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:08, skipping insertion in model container [2020-09-25 05:27:08,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:07" (2/3) ... [2020-09-25 05:27:08,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718ad674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:08, skipping insertion in model container [2020-09-25 05:27:08,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:08" (3/3) ... [2020-09-25 05:27:08,353 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2020-09-25 05:27:08,365 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:27:08,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:27:08,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:27:08,428 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:27:08,428 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:27:08,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:27:08,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:27:08,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:27:08,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:27:08,429 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:27:08,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:27:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 05:27:08,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:27:08,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:08,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:08,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 05:27:08,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:08,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654378425] [2020-09-25 05:27:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:08,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:08,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:27:08,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 05:27:08,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:08,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:08,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:27:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:27:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:08,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:08,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:08,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:08,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:08,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:08,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:08,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:08,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:27:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:27:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:08,963 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 05:27:08,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654378425] [2020-09-25 05:27:08,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:08,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:08,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007385307] [2020-09-25 05:27:08,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:08,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:08,996 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 05:27:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:09,099 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 05:27:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:09,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:27:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:09,116 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:27:09,117 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 05:27:09,122 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 05:27:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 05:27:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 05:27:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:27:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:27:09,183 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 05:27:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:09,184 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:27:09,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:27:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:27:09,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:09,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:09,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:27:09,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 05:27:09,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:09,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44535972] [2020-09-25 05:27:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:09,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:27:09,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 05:27:09,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:09,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:09,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:09,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:09,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:09,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:09,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:09,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:09,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:09,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:27:09,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:09,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:09,481 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 05:27:09,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44535972] [2020-09-25 05:27:09,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:09,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:09,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627080763] [2020-09-25 05:27:09,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:09,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:09,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:09,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:09,485 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 05:27:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:09,572 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 05:27:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:27:09,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 05:27:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:09,575 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:27:09,575 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:27:09,579 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 05:27:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:27:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 05:27:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:27:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:27:09,593 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 05:27:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:09,595 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:27:09,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:27:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:27:09,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:09,598 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 05:27:09,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:27:09,598 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:09,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 05:27:09,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:09,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147001588] [2020-09-25 05:27:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:27:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:27:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1878 [2020-09-25 05:27:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:27:11,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:11,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:11,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 05:27:11,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:11,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:27:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:11,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:27:11,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:27:11,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147001588] [2020-09-25 05:27:11,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:11,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:27:11,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853987761] [2020-09-25 05:27:11,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:11,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:11,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:11,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:11,842 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 05:27:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:12,021 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 05:27:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:12,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:27:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:12,027 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:27:12,028 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 05:27:12,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 05:27:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 05:27:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:27:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 05:27:12,056 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 05:27:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:12,060 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 05:27:12,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 05:27:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:27:12,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:12,066 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 05:27:12,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:27:12,066 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 05:27:12,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:12,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680831028] [2020-09-25 05:27:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:13,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:27:13,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:27:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-09-25 05:27:13,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:13,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:27:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:27:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:13,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:13,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:13,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:13,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:27:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-25 05:27:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:14,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:27:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:14,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:14,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:27:14,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:14,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:27:14,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:14,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:14,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:27:14,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:14,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:14,491 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 05:27:14,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680831028] [2020-09-25 05:27:14,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:14,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:27:14,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498999119] [2020-09-25 05:27:14,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:27:14,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:27:14,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:14,494 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 05:27:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:14,599 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 05:27:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:27:14,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 05:27:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:14,602 INFO L225 Difference]: With dead ends: 75 [2020-09-25 05:27:14,602 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 05:27:14,603 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 05:27:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 05:27:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2020-09-25 05:27:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 05:27:14,615 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 05:27:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:14,616 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 05:27:14,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:27:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 05:27:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:14,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:14,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:14,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:27:14,619 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 05:27:14,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:14,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836494455] [2020-09-25 05:27:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:19,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:27:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:27:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:19,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:27:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:27:19,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:19,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:20,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:20,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-25 05:27:20,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:20,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:27:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:27:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:20,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:20,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:20,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:27:20,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:20,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:20,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 05:27:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:20,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:20,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:20,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:20,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:20,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:20,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:27:20,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836494455] [2020-09-25 05:27:20,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:20,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:20,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946957708] [2020-09-25 05:27:20,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:20,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:20,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:20,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:20,276 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 7 states. [2020-09-25 05:27:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:20,377 INFO L93 Difference]: Finished difference Result 108 states and 147 transitions. [2020-09-25 05:27:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:20,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:20,380 INFO L225 Difference]: With dead ends: 108 [2020-09-25 05:27:20,380 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:27:20,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:27:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 05:27:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 05:27:20,392 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 05:27:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:20,392 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 05:27:20,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 05:27:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:20,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:20,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:20,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:27:20,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 2 times [2020-09-25 05:27:20,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:20,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108212506] [2020-09-25 05:27:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:25,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:25,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:27:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:25,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:25,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:27:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:25,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:25,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:25,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:25,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:28,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3362 [2020-09-25 05:27:28,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:28,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:28,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:27:28,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:28,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 05:27:28,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:28,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:28,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:28,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:28,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:27:28,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 05:27:28,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108212506] [2020-09-25 05:27:28,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:28,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:28,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158967626] [2020-09-25 05:27:28,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:28,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:28,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:28,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:28,955 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 05:27:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:29,060 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-09-25 05:27:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:29,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:29,062 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:27:29,062 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:27:29,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:27:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 05:27:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 05:27:29,073 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 05:27:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:29,073 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 05:27:29,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 05:27:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:27:29,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:29,076 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:29,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:27:29,077 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:29,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 05:27:29,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:29,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468918418] [2020-09-25 05:27:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:34,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:27:34,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:27:34,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:27:34,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:34,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:27:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:34,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:34,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:34,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:34,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:27:39,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:27:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:39,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:27:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:39,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:27:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:39,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:39,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:39,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:39,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:27:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:27:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:39,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:27:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:27:39,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468918418] [2020-09-25 05:27:39,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:39,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:27:39,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607133290] [2020-09-25 05:27:39,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:27:39,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:39,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:27:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:39,291 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 6 states. [2020-09-25 05:27:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:39,386 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 05:27:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:39,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 05:27:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:39,388 INFO L225 Difference]: With dead ends: 104 [2020-09-25 05:27:39,389 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:27:39,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:27:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 05:27:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 05:27:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-09-25 05:27:39,412 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 67 [2020-09-25 05:27:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:39,414 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-09-25 05:27:39,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:27:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-09-25 05:27:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:27:39,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:39,416 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 05:27:39,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:27:39,417 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 05:27:39,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:39,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986940259] [2020-09-25 05:27:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:40,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:27:44,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:27:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:27:44,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 05:27:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:44,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:44,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:49,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:27:49,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:27:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:27:49,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:49,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:27:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:27:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:27:49,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:49,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:27:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:49,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:49,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:49,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:49,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:27:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:27:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:49,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 05:27:49,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:49,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:50,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:50,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:27:50,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:50,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:50,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:27:50,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:50,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 05:27:50,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986940259] [2020-09-25 05:27:50,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:50,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:27:50,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011241858] [2020-09-25 05:27:50,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:27:50,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:50,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:27:50,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:27:50,110 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 11 states. [2020-09-25 05:27:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:50,414 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2020-09-25 05:27:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:27:50,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 05:27:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:50,417 INFO L225 Difference]: With dead ends: 150 [2020-09-25 05:27:50,417 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 05:27:50,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:27:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 05:27:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2020-09-25 05:27:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 05:27:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2020-09-25 05:27:50,431 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 69 [2020-09-25 05:27:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:50,432 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2020-09-25 05:27:50,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:27:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2020-09-25 05:27:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 05:27:50,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:50,434 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:50,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:27:50,434 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:50,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 1 times [2020-09-25 05:27:50,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:50,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907877558] [2020-09-25 05:27:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:55,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:27:55,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 05:27:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:27:55,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:55,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:27:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:55,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:55,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:55,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:55,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:55,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:55,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 05:28:00,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:28:00,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:00,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:28:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:28:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:01,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:28:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:28:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:28:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:28:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:28:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 05:28:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-25 05:28:01,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907877558] [2020-09-25 05:28:01,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:01,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:28:01,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358814008] [2020-09-25 05:28:01,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:28:01,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:01,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:28:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:01,308 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand 6 states. [2020-09-25 05:28:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:01,390 INFO L93 Difference]: Finished difference Result 154 states and 209 transitions. [2020-09-25 05:28:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:28:01,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-09-25 05:28:01,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:01,393 INFO L225 Difference]: With dead ends: 154 [2020-09-25 05:28:01,394 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 05:28:01,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:28:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 05:28:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 05:28:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 05:28:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2020-09-25 05:28:01,415 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 86 [2020-09-25 05:28:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:01,415 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2020-09-25 05:28:01,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:28:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2020-09-25 05:28:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 05:28:01,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:01,418 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:01,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:28:01,418 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 1 times [2020-09-25 05:28:01,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:01,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547571821] [2020-09-25 05:28:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking...