/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/sum_15x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:20:39,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:20:39,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:20:39,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:20:39,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:20:39,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:20:39,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:20:39,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:20:39,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:20:39,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:20:39,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:20:39,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:20:39,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:20:39,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:20:39,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:20:39,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:20:39,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:20:39,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:20:39,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:20:39,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:20:39,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:20:39,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:20:39,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:20:39,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:20:39,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:20:39,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:20:39,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:20:39,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:20:39,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:20:39,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:20:39,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:20:40,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:20:40,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:20:40,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:20:40,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:20:40,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:20:40,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:20:40,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:20:40,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:20:40,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:20:40,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:20:40,008 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 04:20:40,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:20:40,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:20:40,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:20:40,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:20:40,061 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:20:40,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:20:40,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:20:40,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:20:40,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:20:40,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:20:40,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:20:40,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:20:40,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:20:40,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:20:40,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:20:40,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:20:40,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:20:40,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:20:40,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:20:40,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:20:40,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:20:40,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:20:40,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:20:40,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:20:40,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:20:40,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:20:40,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:20:40,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:20:40,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:20:40,068 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 04:20:40,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:20:40,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:20:40,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:20:40,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:20:40,547 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:20:40,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 04:20:40,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bca0d9d4/782f0eddca3549e6818fbe254228fdd4/FLAGe3150bb98 [2020-09-25 04:20:41,161 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:20:41,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 04:20:41,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bca0d9d4/782f0eddca3549e6818fbe254228fdd4/FLAGe3150bb98 [2020-09-25 04:20:41,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bca0d9d4/782f0eddca3549e6818fbe254228fdd4 [2020-09-25 04:20:41,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:20:41,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:20:41,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:41,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:20:41,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:20:41,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a32a894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41, skipping insertion in model container [2020-09-25 04:20:41,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:20:41,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:20:41,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:41,810 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:20:41,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:41,848 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:20:41,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41 WrapperNode [2020-09-25 04:20:41,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:41,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:20:41,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:20:41,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:20:41,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (1/1) ... [2020-09-25 04:20:41,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:20:41,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:20:41,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:20:41,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:20:41,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (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 04:20:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:20:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:20:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 04:20:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:20:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:20:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 04:20:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:20:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:20:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:20:42,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:20:42,243 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:20:42,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:42 BoogieIcfgContainer [2020-09-25 04:20:42,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:20:42,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:20:42,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:20:42,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:20:42,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:20:41" (1/3) ... [2020-09-25 04:20:42,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716dee7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:42, skipping insertion in model container [2020-09-25 04:20:42,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:41" (2/3) ... [2020-09-25 04:20:42,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716dee7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:42, skipping insertion in model container [2020-09-25 04:20:42,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:42" (3/3) ... [2020-09-25 04:20:42,258 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2020-09-25 04:20:42,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:20:42,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:20:42,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:20:42,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:20:42,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:20:42,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:20:42,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:20:42,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:20:42,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:20:42,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:20:42,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:20:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 04:20:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 04:20:42,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:42,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:42,364 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:42,370 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 04:20:42,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:42,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426897015] [2020-09-25 04:20:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:42,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:20:42,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 04:20:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:42,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:20:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:20:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:42,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:42,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:42,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:42,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:42,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:42,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:42,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:42,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:20:42,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:42,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:20:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:43,001 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 04:20:43,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426897015] [2020-09-25 04:20:43,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:20:43,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:20:43,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482800955] [2020-09-25 04:20:43,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:20:43,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:20:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:20:43,057 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 04:20:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:43,255 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 04:20:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:20:43,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 04:20:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:43,275 INFO L225 Difference]: With dead ends: 39 [2020-09-25 04:20:43,275 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 04:20:43,280 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 04:20:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 04:20:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 04:20:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 04:20:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 04:20:43,358 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 04:20:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:43,359 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 04:20:43,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:20:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 04:20:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:20:43,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:43,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:43,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:20:43,363 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:43,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 04:20:43,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:43,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545569983] [2020-09-25 04:20:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:43,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:43,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:20:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:43,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:43,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:43,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:43,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:43,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:43,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:43,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:43,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:20:43,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:43,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:20:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 04:20:44,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545569983] [2020-09-25 04:20:44,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:44,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:20:44,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854975238] [2020-09-25 04:20:44,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:20:44,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:44,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:20:44,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:20:44,047 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-09-25 04:20:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:44,108 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 04:20:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:44,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 04:20:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:44,110 INFO L225 Difference]: With dead ends: 36 [2020-09-25 04:20:44,110 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 04:20:44,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:20:44,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 04:20:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 04:20:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 04:20:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 04:20:44,119 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 04:20:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:44,120 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 04:20:44,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:20:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 04:20:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 04:20:44,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:44,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:44,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:20:44,122 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:44,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 04:20:44,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:44,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605882994] [2020-09-25 04:20:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:44,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:20:44,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 04:20:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:44,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:44,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:44,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:44,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:44,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:44,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:44,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:44,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:44,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:44,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:20:44,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 04:20:44,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:44,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:20:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:20:44,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:44,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:44,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:44,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:20:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:44,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 04:20:44,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605882994] [2020-09-25 04:20:44,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:44,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:20:44,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938991282] [2020-09-25 04:20:44,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:20:44,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:44,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:20:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:20:44,883 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 04:20:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:44,967 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 04:20:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:20:44,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 04:20:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:44,969 INFO L225 Difference]: With dead ends: 41 [2020-09-25 04:20:44,969 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 04:20:44,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:20:44,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 04:20:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 04:20:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 04:20:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 04:20:44,979 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 04:20:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:44,979 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 04:20:44,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:20:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 04:20:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 04:20:44,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:44,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:44,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:20:44,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:44,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 04:20:44,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:44,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561440094] [2020-09-25 04:20:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:45,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:20:45,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:45,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 04:20:45,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:45,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:20:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:45,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:45,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:45,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:45,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:45,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:45,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 04:20:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:20:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:46,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:46,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:20:46,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 04:20:46,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:46,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:20:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:46,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:46,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:46,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:20:46,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:46,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:46,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:46,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:46,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:20:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:46,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 04:20:46,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561440094] [2020-09-25 04:20:46,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:46,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:20:46,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574117650] [2020-09-25 04:20:46,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:20:46,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:46,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:20:46,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:46,293 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 04:20:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:46,393 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 04:20:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:20:46,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 04:20:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:46,396 INFO L225 Difference]: With dead ends: 46 [2020-09-25 04:20:46,396 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 04:20:46,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:20:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 04:20:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 04:20:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:20:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 04:20:46,405 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 04:20:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:46,405 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 04:20:46,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:20:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 04:20:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:20:46,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:46,407 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:46,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:20:46,408 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 04:20:46,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:46,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361964176] [2020-09-25 04:20:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:47,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-09-25 04:20:47,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:20:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:20:47,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:47,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:47,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:47,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:20:47,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 04:20:47,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:20:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:20:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 04:20:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:20:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:48,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:20:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:20:48,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:20:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:48,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 04:20:48,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:48,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:20:48,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 04:20:48,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361964176] [2020-09-25 04:20:48,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:48,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:20:48,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893920484] [2020-09-25 04:20:48,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:20:48,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:48,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:20:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:48,305 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 04:20:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:48,422 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 04:20:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:20:48,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 04:20:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:48,425 INFO L225 Difference]: With dead ends: 51 [2020-09-25 04:20:48,425 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 04:20:48,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:20:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 04:20:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 04:20:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 04:20:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 04:20:48,433 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 04:20:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:48,434 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 04:20:48,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:20:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 04:20:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:20:48,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:48,436 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:48,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:20:48,436 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:48,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 04:20:48,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:48,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742853339] [2020-09-25 04:20:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:50,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:50,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:20:50,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-09-25 04:20:50,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:50,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:20:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:20:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:50,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:50,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:50,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:50,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:50,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:50,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:50,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:20:50,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 04:20:50,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:50,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:20:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 04:20:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:50,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:50,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:20:50,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:50,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 04:20:50,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:50,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:20:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:50,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 04:20:50,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:20:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:50,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:50,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:20:50,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:50,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:20:50,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:50,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:50,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:20:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:20:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:51,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:51,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:51,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:20:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:51,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 04:20:51,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742853339] [2020-09-25 04:20:51,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:51,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:20:51,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000992957] [2020-09-25 04:20:51,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:20:51,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:20:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:20:51,108 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 04:20:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:51,242 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 04:20:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:20:51,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 04:20:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:51,244 INFO L225 Difference]: With dead ends: 56 [2020-09-25 04:20:51,244 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 04:20:51,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:20:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 04:20:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 04:20:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:20:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 04:20:51,259 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 04:20:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:51,261 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 04:20:51,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:20:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 04:20:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 04:20:51,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:51,265 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:51,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:20:51,265 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:51,266 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 04:20:51,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:51,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200509078] [2020-09-25 04:20:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:53,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:53,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 04:20:53,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-09-25 04:20:53,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:53,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:20:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:20:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:53,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:53,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:53,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:53,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:20:53,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:53,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-25 04:20:53,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:53,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:20:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:53,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:20:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:53,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:20:53,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 04:20:53,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:53,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:20:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:20:54,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 04:20:54,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:54,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:20:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:20:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:20:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:20:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:20:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:54,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:20:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:20:54,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 21 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 04:20:54,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200509078] [2020-09-25 04:20:54,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:54,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:20:54,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838639321] [2020-09-25 04:20:54,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:20:54,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:54,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:20:54,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:20:54,440 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 04:20:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:54,579 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 04:20:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:20:54,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 04:20:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:54,581 INFO L225 Difference]: With dead ends: 61 [2020-09-25 04:20:54,581 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 04:20:54,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:20:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 04:20:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 04:20:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 04:20:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 04:20:54,595 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 04:20:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:54,596 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 04:20:54,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:20:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 04:20:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 04:20:54,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:54,600 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:54,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:20:54,601 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:54,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:54,601 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 04:20:54,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:54,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058251056] [2020-09-25 04:20:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:20:56,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-09-25 04:20:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:20:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:20:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:20:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:20:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:20:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-09-25 04:20:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:20:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 04:20:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:20:57,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-25 04:20:57,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:20:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:20:57,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 04:20:57,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:20:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:20:57,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 04:20:57,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:20:57,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:58,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:58,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:58,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 04:20:58,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:58,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:20:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:58,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:58,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:20:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:20:58,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:58,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:20:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:58,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:58,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:20:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:58,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:20:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:58,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:58,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:20:58,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:58,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 24 proven. 137 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 04:20:58,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058251056] [2020-09-25 04:20:58,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:58,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 04:20:58,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250558078] [2020-09-25 04:20:58,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:20:58,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:58,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:20:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:20:58,418 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 04:20:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:58,563 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 04:20:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:20:58,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 04:20:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:58,565 INFO L225 Difference]: With dead ends: 66 [2020-09-25 04:20:58,566 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 04:20:58,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:20:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 04:20:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 04:20:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 04:20:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 04:20:58,573 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 04:20:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:58,574 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 04:20:58,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:20:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 04:20:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 04:20:58,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:58,576 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:58,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:20:58,576 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 04:20:58,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:58,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304611177] [2020-09-25 04:20:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:01,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:01,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 04:21:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3046 [2020-09-25 04:21:01,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 04:21:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:21:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:21:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:01,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:01,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:21:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:02,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:02,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:21:02,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:02,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-25 04:21:02,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:02,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 04:21:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:21:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:21:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:02,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:02,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:21:02,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 04:21:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:02,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:21:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:21:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:02,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:21:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 04:21:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:02,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:21:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:02,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:03,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:03,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:21:03,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 04:21:03,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:03,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:21:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:21:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:03,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:03,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:21:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:03,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:03,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:21:03,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 04:21:03,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:03,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:21:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:21:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:03,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:03,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:21:03,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:21:03,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:03,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:21:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:21:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:03,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:03,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:21:03,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:21:03,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:03,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:21:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:21:03,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:03,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:21:03,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:21:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:03,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:21:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:21:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 30 proven. 177 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 04:21:03,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304611177] [2020-09-25 04:21:03,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:21:03,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 04:21:03,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159002761] [2020-09-25 04:21:03,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 04:21:03,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:03,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 04:21:03,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:21:03,918 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 04:21:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:04,070 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 04:21:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:21:04,070 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 04:21:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:04,075 INFO L225 Difference]: With dead ends: 71 [2020-09-25 04:21:04,076 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 04:21:04,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:21:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 04:21:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 04:21:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 04:21:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 04:21:04,091 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 04:21:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:04,091 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 04:21:04,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 04:21:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 04:21:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 04:21:04,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:04,093 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:04,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:21:04,093 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:04,094 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 04:21:04,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:04,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787033687] [2020-09-25 04:21:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 04:21:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-09-25 04:21:06,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:06,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:21:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:21:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:21:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:06,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:06,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:06,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:21:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:06,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:21:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:06,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:21:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 04:21:06,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:06,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:21:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:21:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 04:21:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:07,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:21:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:07,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:21:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:07,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:21:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:21:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:07,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:07,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:21:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:08,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:08,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:21:08,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 04:21:08,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:08,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:21:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:21:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:08,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:21:08,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 04:21:08,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:08,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:21:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:21:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:08,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:21:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 04:21:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:08,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:21:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:21:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:08,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:08,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:21:08,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:21:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:08,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:21:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:21:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:08,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:08,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:21:08,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:21:08,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:08,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:21:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:21:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:08,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:08,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:08,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:21:08,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:21:08,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:08,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:21:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:08,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:21:08,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 24 proven. 244 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 04:21:08,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787033687] [2020-09-25 04:21:08,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:21:08,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:21:08,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832697022] [2020-09-25 04:21:08,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:21:08,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:08,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:21:08,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:21:08,819 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 04:21:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:09,025 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 04:21:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:21:09,026 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 04:21:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:09,028 INFO L225 Difference]: With dead ends: 76 [2020-09-25 04:21:09,028 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 04:21:09,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 04:21:09,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 04:21:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 04:21:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 04:21:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 04:21:09,036 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 04:21:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:09,037 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 04:21:09,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:21:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 04:21:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 04:21:09,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:09,038 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:09,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:21:09,039 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 04:21:09,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:09,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198447928] [2020-09-25 04:21:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 04:21:12,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3213 [2020-09-25 04:21:12,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:12,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 04:21:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:21:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:21:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:12,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:21:12,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:12,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:21:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:12,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:12,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 04:21:12,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:12,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-25 04:21:12,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:12,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:12,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 04:21:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:21:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 04:21:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:13,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:21:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 04:21:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:13,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 04:21:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:21:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:13,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:13,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:14,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:14,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:21:14,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 04:21:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:14,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:21:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:21:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:14,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:14,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:21:14,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-25 04:21:14,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:14,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:21:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:21:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:21:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 04:21:15,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:21:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:21:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:21:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 04:21:15,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:21:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:21:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:21:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 04:21:15,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:21:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:21:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:21:15,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:21:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 04:21:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:21:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:21:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:21:15,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:21:15,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:21:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:21:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:21:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:21:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:21:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:21:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:15,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:15,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:15,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:21:15,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:21:15,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:15,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:21:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:21:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 18 proven. 296 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-25 04:21:15,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198447928] [2020-09-25 04:21:15,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:21:15,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:21:15,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637456319] [2020-09-25 04:21:15,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:21:15,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:15,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:21:15,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:21:15,919 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 04:21:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:16,148 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 04:21:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:21:16,154 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 04:21:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:16,156 INFO L225 Difference]: With dead ends: 81 [2020-09-25 04:21:16,156 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 04:21:16,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:21:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 04:21:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 04:21:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 04:21:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 04:21:16,164 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 04:21:16,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:16,165 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 04:21:16,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:21:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 04:21:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 04:21:16,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:16,167 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:16,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:21:16,168 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:16,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 04:21:16,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:16,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067241612] [2020-09-25 04:21:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:20,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 04:21:20,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4116 [2020-09-25 04:21:20,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:20,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 04:21:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:21:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:21:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:20,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:20,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:20,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:21:20,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:20,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:20,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:20,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:21:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 04:21:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-09-25 04:21:21,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 04:21:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:21:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 04:21:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:21,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:21,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 04:21:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 04:21:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:21,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:22,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:22,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:21:22,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:21:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:23,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:23,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:21:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:23,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:23,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:23,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:21:23,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 04:21:23,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:23,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:21:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:21:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:23,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:23,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:23,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:23,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:21:23,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:23,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:23,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:23,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:21:23,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 04:21:23,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:23,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:21:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:21:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:21:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 04:21:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:21:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:21:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:21:24,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 04:21:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:21:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:21:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:21:24,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 04:21:24,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:21:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:21:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:21:24,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:21:24,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:21:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:21:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:21:24,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:21:24,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:21:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:21:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 30 proven. 367 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-09-25 04:21:24,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067241612] [2020-09-25 04:21:24,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:21:24,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 04:21:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833043894] [2020-09-25 04:21:24,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 04:21:24,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 04:21:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:21:24,564 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 17 states. [2020-09-25 04:21:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:24,813 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-09-25 04:21:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:21:24,814 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-09-25 04:21:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:24,815 INFO L225 Difference]: With dead ends: 86 [2020-09-25 04:21:24,815 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 04:21:24,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 04:21:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 04:21:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 04:21:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 04:21:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 04:21:24,833 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 117 [2020-09-25 04:21:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:24,834 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 04:21:24,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 04:21:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 04:21:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 04:21:24,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:24,837 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:24,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:21:24,837 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:24,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580405, now seen corresponding path program 12 times [2020-09-25 04:21:24,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:24,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392149512] [2020-09-25 04:21:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:25,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:28,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:28,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3584 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 04:21:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:21:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:28,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:28,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:21:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:29,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:29,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:21:29,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:29,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-09-25 04:21:29,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:29,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 04:21:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:21:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 04:21:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:30,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:30,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 04:21:30,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-09-25 04:21:30,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:30,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 04:21:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 04:21:30,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:30,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:31,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:31,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 04:21:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-25 04:21:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:31,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 04:21:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 04:21:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:31,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:31,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:21:31,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-25 04:21:31,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:31,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 04:21:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:21:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:32,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:21:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-09-25 04:21:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:32,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:21:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:21:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:32,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:21:32,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 04:21:32,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:32,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:21:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:21:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:32,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:32,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:21:32,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 04:21:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:32,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:21:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:21:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:32,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:33,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:33,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:21:33,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:33,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 04:21:33,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:33,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:21:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:21:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:33,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:21:33,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 04:21:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:33,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:21:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:21:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:33,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:33,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:21:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 04:21:33,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:33,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:21:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:21:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:33,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:33,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:21:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 04:21:33,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:33,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:21:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:21:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:33,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:33,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:33,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:21:33,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:33,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:21:33,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:33,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:21:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:21:33,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:21:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:21:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:33,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:21:33,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:21:33,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:33,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:21:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:21:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 30 proven. 461 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-09-25 04:21:33,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392149512] [2020-09-25 04:21:33,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:21:33,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 04:21:33,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727691117] [2020-09-25 04:21:33,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 04:21:33,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:33,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 04:21:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:21:33,749 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 19 states. [2020-09-25 04:21:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:33,984 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-09-25 04:21:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:21:33,984 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 126 [2020-09-25 04:21:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:33,985 INFO L225 Difference]: With dead ends: 91 [2020-09-25 04:21:33,985 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 04:21:33,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=643, Unknown=0, NotChecked=0, Total=992 [2020-09-25 04:21:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 04:21:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-09-25 04:21:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 04:21:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-09-25 04:21:33,995 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 126 [2020-09-25 04:21:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:33,995 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-09-25 04:21:33,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 04:21:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-09-25 04:21:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:21:33,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:33,997 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:33,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:21:33,998 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:33,998 INFO L82 PathProgramCache]: Analyzing trace with hash 55997035, now seen corresponding path program 13 times [2020-09-25 04:21:33,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:33,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224802781] [2020-09-25 04:21:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:38,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:38,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:21:38,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4153 [2020-09-25 04:21:38,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:38,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 04:21:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:21:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:21:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:38,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:38,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:21:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:38,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 04:21:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking...