/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=0.2 --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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:19:05,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:19:05,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:19:05,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:19:05,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:19:05,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:19:05,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:19:05,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:19:05,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:19:05,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:19:05,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:19:05,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:19:05,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:19:05,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:19:05,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:19:05,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:19:05,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:19:05,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:19:05,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:19:05,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:19:05,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:19:05,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:19:05,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:19:05,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:19:05,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:19:05,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:19:05,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:19:05,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:19:05,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:19:05,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:19:05,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:19:05,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:19:05,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:19:05,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:19:05,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:19:05,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:19:05,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:19:05,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:19:05,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:19:05,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:19:05,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:19:05,941 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 04:19:05,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:19:05,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:19:05,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:19:05,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:19:05,969 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:19:05,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:19:05,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:19:05,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:19:05,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:19:05,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:19:05,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:19:05,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:19:05,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:19:05,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:19:05,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:19:05,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:19:05,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:19:05,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:19:05,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:19:05,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:19:05,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:19:05,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:19:05,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:19:05,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:19:05,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:19:05,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:19:05,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:19:05,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:19:05,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:19:05,974 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:19:06,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:19:06,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:19:06,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:19:06,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:19:06,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:19:06,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 04:19:06,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afc1a8f7c/eabaef316c24462f99958ca74a26e759/FLAG4846f336b [2020-09-25 04:19:07,139 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:19:07,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 04:19:07,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afc1a8f7c/eabaef316c24462f99958ca74a26e759/FLAG4846f336b [2020-09-25 04:19:07,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afc1a8f7c/eabaef316c24462f99958ca74a26e759 [2020-09-25 04:19:07,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:19:07,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:19:07,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:07,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:19:07,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:19:07,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07, skipping insertion in model container [2020-09-25 04:19:07,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:19:07,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:19:07,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:07,766 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:19:07,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:07,808 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:19:07,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07 WrapperNode [2020-09-25 04:19:07,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:07,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:19:07,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:19:07,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:19:07,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (1/1) ... [2020-09-25 04:19:07,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:19:07,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:19:07,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:19:07,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:19:07,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (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 04:19:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 04:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:19:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:19:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:19:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 04:19:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:19:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:19:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:19:08,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:19:08,260 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:19:08,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:08 BoogieIcfgContainer [2020-09-25 04:19:08,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:19:08,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:19:08,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:19:08,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:19:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:19:07" (1/3) ... [2020-09-25 04:19:08,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247a50ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:08, skipping insertion in model container [2020-09-25 04:19:08,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:07" (2/3) ... [2020-09-25 04:19:08,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247a50ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:08, skipping insertion in model container [2020-09-25 04:19:08,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:08" (3/3) ... [2020-09-25 04:19:08,307 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-25 04:19:08,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:19:08,357 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:19:08,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:19:08,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:19:08,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:19:08,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:19:08,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:19:08,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:19:08,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:19:08,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:19:08,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:19:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 04:19:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:19:08,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:08,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:08,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:08,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 04:19:08,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:08,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705241969] [2020-09-25 04:19:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:19:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:19:08,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:19:08,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:19:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:08,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:08,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:19:08,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,874 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 04:19:08,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705241969] [2020-09-25 04:19:08,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:08,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:08,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741382405] [2020-09-25 04:19:08,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:08,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:08,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:08,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:08,904 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 04:19:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:09,018 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 04:19:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:09,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:19:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:09,032 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:19:09,033 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 04:19:09,037 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 04:19:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 04:19:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 04:19:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:19:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 04:19:09,092 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 04:19:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:09,093 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 04:19:09,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 04:19:09,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:19:09,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:09,096 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 04:19:09,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:19:09,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:09,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:09,098 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 04:19:09,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:09,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742294906] [2020-09-25 04:19:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:19:09,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 04:19:09,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:09,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:09,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:09,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:19:09,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,300 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 04:19:09,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742294906] [2020-09-25 04:19:09,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:09,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:09,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950086102] [2020-09-25 04:19:09,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:09,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:09,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:09,305 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 04:19:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:09,369 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 04:19:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:09,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:19:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:09,372 INFO L225 Difference]: With dead ends: 36 [2020-09-25 04:19:09,372 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 04:19:09,373 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 04:19:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 04:19:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 04:19:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:19:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 04:19:09,382 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 04:19:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:09,382 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 04:19:09,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 04:19:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:19:09,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:09,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:09,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:19:09,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 04:19:09,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:09,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597010458] [2020-09-25 04:19:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:19:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 04:19:10,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:19:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:10,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:10,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 04:19:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:10,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:19:10,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:10,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:10,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 04:19:10,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597010458] [2020-09-25 04:19:10,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:10,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:10,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857981654] [2020-09-25 04:19:10,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:10,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:10,491 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 04:19:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:10,577 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 04:19:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:10,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:19:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:10,580 INFO L225 Difference]: With dead ends: 62 [2020-09-25 04:19:10,580 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 04:19:10,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:10,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 04:19:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 04:19:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 04:19:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 04:19:10,591 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 04:19:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:10,591 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 04:19:10,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 04:19:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:19:10,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:10,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:10,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:19:10,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 04:19:10,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:10,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026746348] [2020-09-25 04:19:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:19:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-25 04:19:10,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:19:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:10,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:10,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:10,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 04:19:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:11,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:11,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:19:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 04:19:11,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026746348] [2020-09-25 04:19:11,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:11,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:11,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351471453] [2020-09-25 04:19:11,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:11,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:11,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:11,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:11,339 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 04:19:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:11,429 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 04:19:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:11,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 04:19:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:11,431 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:19:11,432 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:19:11,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:19:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 04:19:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 04:19:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 04:19:11,441 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 04:19:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:11,442 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 04:19:11,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 04:19:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:19:11,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:11,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:11,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:11,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 04:19:11,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:11,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718240184] [2020-09-25 04:19:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:19:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-25 04:19:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:19:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:11,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:12,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:12,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:12,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 04:19:12,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:12,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:12,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:12,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:19:12,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:12,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:19:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:12,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 04:19:12,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718240184] [2020-09-25 04:19:12,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:12,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:12,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379794906] [2020-09-25 04:19:12,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:12,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:12,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:12,436 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 04:19:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:12,554 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 04:19:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:12,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 04:19:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:12,558 INFO L225 Difference]: With dead ends: 94 [2020-09-25 04:19:12,558 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 04:19:12,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:19:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 04:19:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 04:19:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:19:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 04:19:12,573 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 04:19:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:12,573 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 04:19:12,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 04:19:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:12,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:12,576 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:12,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:12,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:12,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:12,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 04:19:12,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:12,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004819594] [2020-09-25 04:19:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:17,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:17,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:17,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:17,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:17,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:17,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:17,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:17,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:20,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-09-25 04:19:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:20,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:19:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:20,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:19:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 04:19:21,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004819594] [2020-09-25 04:19:21,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:21,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:21,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097650181] [2020-09-25 04:19:21,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:21,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:21,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:21,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:21,043 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 7 states. [2020-09-25 04:19:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:21,155 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 04:19:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:21,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:21,157 INFO L225 Difference]: With dead ends: 68 [2020-09-25 04:19:21,157 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 04:19:21,158 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 04:19:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 04:19:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 04:19:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:19:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 04:19:21,168 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 51 [2020-09-25 04:19:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:21,169 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 04:19:21,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 04:19:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:19:21,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:21,172 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:21,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:19:21,173 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:21,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 04:19:21,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:21,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660978639] [2020-09-25 04:19:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 04:19:26,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 04:19:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:19:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:26,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:19:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:26,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:26,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:26,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:26,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:19:31,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:19:31,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:19:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:31,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:19:31,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:31,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:31,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:32,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-09-25 04:19:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:32,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:19:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:32,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:32,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:32,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:19:32,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:32,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:32,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:32,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:32,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:19:32,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:32,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:32,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:19:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:32,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:19:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 74 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-09-25 04:19:32,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660978639] [2020-09-25 04:19:32,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:32,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:32,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453149256] [2020-09-25 04:19:32,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:32,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:32,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:32,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:32,429 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 6 states. [2020-09-25 04:19:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:32,515 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2020-09-25 04:19:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:32,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 04:19:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:32,518 INFO L225 Difference]: With dead ends: 96 [2020-09-25 04:19:32,518 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 04:19:32,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 04:19:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 04:19:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 04:19:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-09-25 04:19:32,536 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 85 [2020-09-25 04:19:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:32,536 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-09-25 04:19:32,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-09-25 04:19:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 04:19:32,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:32,538 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:32,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:19:32,541 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:32,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 4 times [2020-09-25 04:19:32,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:32,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149863839] [2020-09-25 04:19:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 04:19:37,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:19:37,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 04:19:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:37,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:37,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:37,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:19:42,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:19:42,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:42,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:19:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:42,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:19:42,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:42,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:42,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:42,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:19:43,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 04:19:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:19:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:43,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:19:43,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:43,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:19:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:43,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 94 proven. 16 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 04:19:43,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149863839] [2020-09-25 04:19:43,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:43,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:43,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708676772] [2020-09-25 04:19:43,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:43,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:43,335 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 6 states. [2020-09-25 04:19:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:43,449 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2020-09-25 04:19:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:43,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-09-25 04:19:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:43,451 INFO L225 Difference]: With dead ends: 98 [2020-09-25 04:19:43,451 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 04:19:43,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:19:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 04:19:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 04:19:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:19:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 04:19:43,459 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 87 [2020-09-25 04:19:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:43,460 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 04:19:43,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 04:19:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 04:19:43,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:43,462 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:43,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:19:43,462 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 5 times [2020-09-25 04:19:43,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:43,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036799122] [2020-09-25 04:19:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 04:19:48,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:19:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:19:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:19:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:19:53,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 04:19:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:19:53,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:19:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:19:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:53,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 04:19:53,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:53,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:53,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:19:53,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:54,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:19:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:54,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:19:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:19:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-09-25 04:19:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:55,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:19:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:55,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:55,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:55,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:19:55,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:55,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:55,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:55,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:55,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:55,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:55,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:55,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:55,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:55,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:55,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:55,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:55,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:55,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:55,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:19:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:55,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 55 proven. 70 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 04:19:55,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036799122] [2020-09-25 04:19:55,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:55,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:55,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587280142] [2020-09-25 04:19:55,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:55,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:55,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:55,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:55,998 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 04:19:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:56,190 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2020-09-25 04:19:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:19:56,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-09-25 04:19:56,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:56,192 INFO L225 Difference]: With dead ends: 91 [2020-09-25 04:19:56,192 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 04:19:56,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:19:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 04:19:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 04:19:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 04:19:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-09-25 04:19:56,200 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 87 [2020-09-25 04:19:56,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:56,200 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-09-25 04:19:56,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:56,201 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-09-25 04:19:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 04:19:56,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:56,202 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:56,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:19:56,202 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:56,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 6 times [2020-09-25 04:19:56,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:56,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726368537] [2020-09-25 04:19:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 04:20:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:20:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:20:01,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:01,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:20:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:20:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:20:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:01,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:01,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:01,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:01,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking...