/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/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:17:06,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:17:06,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:17:06,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:17:06,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:17:06,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:17:06,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:17:06,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:17:06,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:17:06,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:17:06,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:17:06,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:17:06,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:17:06,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:17:06,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:17:06,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:17:06,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:17:06,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:17:06,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:17:06,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:17:06,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:17:06,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:17:06,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:17:06,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:17:06,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:17:06,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:17:06,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:17:06,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:17:06,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:17:06,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:17:06,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:17:06,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:17:06,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:17:06,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:17:06,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:17:06,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:17:06,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:17:06,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:17:06,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:17:06,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:17:06,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:17:06,985 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 04:17:07,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:17:07,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:17:07,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:17:07,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:17:07,038 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:17:07,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:17:07,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:17:07,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:17:07,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:17:07,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:17:07,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:17:07,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:17:07,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:17:07,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:17:07,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:17:07,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:17:07,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:17:07,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:17:07,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:17:07,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:17:07,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:17:07,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:17:07,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:17:07,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:17:07,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:17:07,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:17:07,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:17:07,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:17:07,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:17:07,045 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 04:17:07,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:17:07,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:17:07,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:17:07,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:17:07,570 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:17:07,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 04:17:07,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c94304974/ca71f69782f347c1aa201559905b83e5/FLAG9e2cb6ca2 [2020-09-25 04:17:08,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:17:08,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 04:17:08,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c94304974/ca71f69782f347c1aa201559905b83e5/FLAG9e2cb6ca2 [2020-09-25 04:17:08,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c94304974/ca71f69782f347c1aa201559905b83e5 [2020-09-25 04:17:08,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:17:08,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:17:08,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:08,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:17:08,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:17:08,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6d277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08, skipping insertion in model container [2020-09-25 04:17:08,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:17:08,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:17:08,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:08,865 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:17:08,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:08,899 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:17:08,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08 WrapperNode [2020-09-25 04:17:08,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:08,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:17:08,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:17:08,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:17:08,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (1/1) ... [2020-09-25 04:17:08,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:17:08,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:17:08,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:17:08,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:17:08,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (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 04:17:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:17:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:17:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 04:17:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:17:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:17:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:17:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 04:17:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:17:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:17:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:17:09,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:17:09,350 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:17:09,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:09 BoogieIcfgContainer [2020-09-25 04:17:09,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:17:09,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:17:09,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:17:09,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:17:09,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:17:08" (1/3) ... [2020-09-25 04:17:09,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f304afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:09, skipping insertion in model container [2020-09-25 04:17:09,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:08" (2/3) ... [2020-09-25 04:17:09,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f304afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:09, skipping insertion in model container [2020-09-25 04:17:09,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:09" (3/3) ... [2020-09-25 04:17:09,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 04:17:09,378 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:17:09,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:17:09,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:17:09,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:17:09,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:17:09,437 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:17:09,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:17:09,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:17:09,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:17:09,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:17:09,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:17:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 04:17:09,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 04:17:09,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:09,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:09,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 04:17:09,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:09,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210299023] [2020-09-25 04:17:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:09,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:09,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 04:17:09,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:09,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 04:17:09,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:09,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:17:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:17:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:17:09,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:09,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:09,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:09,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:09,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:09,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:09,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:09,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:17:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:09,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,116 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 04:17:10,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210299023] [2020-09-25 04:17:10,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:10,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:17:10,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595491763] [2020-09-25 04:17:10,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:17:10,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:10,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:17:10,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:10,149 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 04:17:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:10,406 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 04:17:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:17:10,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 04:17:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:10,427 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:17:10,427 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 04:17:10,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 04:17:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 04:17:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 04:17:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 04:17:10,516 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 04:17:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:10,517 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 04:17:10,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:17:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 04:17:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 04:17:10,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:10,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:10,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:17:10,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:10,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 04:17:10,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:10,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280490657] [2020-09-25 04:17:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:17:10,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 04:17:10,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:17:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:17:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:10,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:10,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:10,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:10,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:17:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,828 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 04:17:10,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280490657] [2020-09-25 04:17:10,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:10,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:17:10,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809562361] [2020-09-25 04:17:10,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:17:10,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:10,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:17:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:10,834 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 04:17:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:11,004 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 04:17:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:17:11,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 04:17:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:11,008 INFO L225 Difference]: With dead ends: 39 [2020-09-25 04:17:11,008 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 04:17:11,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 04:17:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 04:17:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 04:17:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 04:17:11,019 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 04:17:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:11,019 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 04:17:11,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:17:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 04:17:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 04:17:11,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:11,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:11,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:17:11,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:11,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 04:17:11,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:11,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504475328] [2020-09-25 04:17:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:17:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-25 04:17:11,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:17:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:11,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:11,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:11,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:17:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 04:17:11,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:11,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:17:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:11,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:11,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:11,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:17:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:17:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:17:11,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504475328] [2020-09-25 04:17:11,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:11,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:17:11,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972892315] [2020-09-25 04:17:11,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:17:11,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:11,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:17:11,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:11,727 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-09-25 04:17:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:11,847 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-25 04:17:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:17:11,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 04:17:11,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:11,852 INFO L225 Difference]: With dead ends: 55 [2020-09-25 04:17:11,852 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 04:17:11,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:17:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 04:17:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 04:17:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 04:17:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-25 04:17:11,873 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2020-09-25 04:17:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:11,873 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-25 04:17:11,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:17:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-25 04:17:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 04:17:11,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:11,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:11,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:17:11,878 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 04:17:11,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:11,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130735647] [2020-09-25 04:17:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:12,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:12,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 04:17:12,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-25 04:17:12,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:12,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:17:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:17:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:17:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:13,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 04:17:13,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:17:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:13,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:17:13,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:13,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:13,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:17:13,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 04:17:13,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130735647] [2020-09-25 04:17:13,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:13,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:17:13,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643650125] [2020-09-25 04:17:13,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:17:13,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:13,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:17:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:17:13,242 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2020-09-25 04:17:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:13,632 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-09-25 04:17:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:17:13,634 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 04:17:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:13,639 INFO L225 Difference]: With dead ends: 51 [2020-09-25 04:17:13,639 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 04:17:13,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:17:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 04:17:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-25 04:17:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 04:17:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-09-25 04:17:13,662 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 37 [2020-09-25 04:17:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:13,662 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-09-25 04:17:13,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:17:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-09-25 04:17:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:17:13,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:13,665 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:13,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:17:13,666 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:13,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 04:17:13,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:13,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804537793] [2020-09-25 04:17:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:18,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:18,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 04:17:18,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:17:18,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:17:18,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:18,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 04:17:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:17:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:18,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:18,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:18,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:18,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:18,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:18,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:17:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:17:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-09-25 04:17:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:17:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:17:21,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:21,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:21,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:17:21,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:17:21,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:17:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:17:21,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:17:21,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:21,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:17:21,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 04:17:21,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804537793] [2020-09-25 04:17:21,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:21,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:17:21,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096158331] [2020-09-25 04:17:21,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:17:21,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:21,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:17:21,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:21,241 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 7 states. [2020-09-25 04:17:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:21,383 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-09-25 04:17:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:17:21,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 04:17:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:21,388 INFO L225 Difference]: With dead ends: 79 [2020-09-25 04:17:21,388 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 04:17:21,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 04:17:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-09-25 04:17:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 04:17:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-09-25 04:17:21,409 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 56 [2020-09-25 04:17:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:21,409 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-09-25 04:17:21,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:17:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-09-25 04:17:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 04:17:21,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:21,417 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:21,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:17:21,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:21,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2003700030, now seen corresponding path program 2 times [2020-09-25 04:17:21,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:21,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885347220] [2020-09-25 04:17:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 04:17:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-09-25 04:17:22,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:22,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:17:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:17:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:22,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:22,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:22,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:22,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:17:23,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:23,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 04:17:23,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:17:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:17:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:23,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:23,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:17:23,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 04:17:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:23,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 04:17:23,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:17:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:23,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:23,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:23,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:17:23,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885347220] [2020-09-25 04:17:23,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:23,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:17:23,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559334222] [2020-09-25 04:17:23,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:17:23,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:17:23,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:23,546 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 7 states. [2020-09-25 04:17:23,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:23,701 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2020-09-25 04:17:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:17:23,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-09-25 04:17:23,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:23,705 INFO L225 Difference]: With dead ends: 76 [2020-09-25 04:17:23,705 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 04:17:23,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:17:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 04:17:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 04:17:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 04:17:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-25 04:17:23,720 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 55 [2020-09-25 04:17:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:23,720 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-25 04:17:23,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:17:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-25 04:17:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:17:23,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:23,725 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:23,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:17:23,726 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:23,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash 847598467, now seen corresponding path program 3 times [2020-09-25 04:17:23,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:23,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126982396] [2020-09-25 04:17:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:17:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:17:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3448 [2020-09-25 04:17:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:17:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:17:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:27,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:27,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:27,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:27,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:17:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-09-25 04:17:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:17:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:28,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-25 04:17:28,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:17:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:28,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:17:28,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:28,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:17:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:17:28,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126982396] [2020-09-25 04:17:28,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:28,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:17:28,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663284574] [2020-09-25 04:17:28,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:17:28,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:28,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:17:28,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:28,726 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 10 states. [2020-09-25 04:17:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:28,872 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2020-09-25 04:17:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:17:28,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 04:17:28,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:28,874 INFO L225 Difference]: With dead ends: 79 [2020-09-25 04:17:28,875 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 04:17:28,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:17:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 04:17:28,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 04:17:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 04:17:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-09-25 04:17:28,892 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 54 [2020-09-25 04:17:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:28,895 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-09-25 04:17:28,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:17:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-09-25 04:17:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 04:17:28,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:28,897 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:28,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:17:28,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:28,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 4 times [2020-09-25 04:17:28,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:28,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679379970] [2020-09-25 04:17:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 04:17:33,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4908 [2020-09-25 04:17:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:33,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:17:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:17:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:17:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:33,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:33,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:33,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:33,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:33,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:37,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:17:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3366 [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:17:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:37,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:37,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 04:17:37,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:37,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:17:37,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:37,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:37,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:17:37,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:37,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:37,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:17:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:37,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:37,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:17:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:17:37,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679379970] [2020-09-25 04:17:37,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:37,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:17:37,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012462756] [2020-09-25 04:17:37,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:17:37,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:17:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:17:37,548 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 15 states. [2020-09-25 04:17:37,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:37,903 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-09-25 04:17:37,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:17:37,904 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-09-25 04:17:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:37,906 INFO L225 Difference]: With dead ends: 63 [2020-09-25 04:17:37,908 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 04:17:37,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:17:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 04:17:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-09-25 04:17:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 04:17:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-09-25 04:17:37,921 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 55 [2020-09-25 04:17:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:37,923 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-09-25 04:17:37,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:17:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-09-25 04:17:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 04:17:37,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:37,926 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:37,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:17:37,927 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:37,927 INFO L82 PathProgramCache]: Analyzing trace with hash -778718797, now seen corresponding path program 5 times [2020-09-25 04:17:37,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:37,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314347448] [2020-09-25 04:17:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:42,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:42,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 04:17:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:17:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:17:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:42,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:17:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:17:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:17:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:42,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:42,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:42,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:47,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:47,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:17:47,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:17:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:17:47,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:47,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:17:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:17:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:17:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:17:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:17:48,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:48,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:48,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:17:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:50,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:17:50,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:17:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2758 [2020-09-25 04:17:50,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:50,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:17:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:51,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:17:51,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:17:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:51,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:17:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:51,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:17:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:51,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:51,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 57 proven. 74 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 04:17:51,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314347448] [2020-09-25 04:17:51,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:51,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:17:51,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333117160] [2020-09-25 04:17:51,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:17:51,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:17:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:51,147 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 10 states. [2020-09-25 04:17:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:51,494 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2020-09-25 04:17:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:17:51,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-09-25 04:17:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:51,497 INFO L225 Difference]: With dead ends: 108 [2020-09-25 04:17:51,497 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 04:17:51,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:17:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 04:17:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 04:17:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 04:17:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-09-25 04:17:51,507 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 90 [2020-09-25 04:17:51,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:51,507 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-09-25 04:17:51,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:17:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-09-25 04:17:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:17:51,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:51,509 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:51,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:17:51,509 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:51,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1106616419, now seen corresponding path program 6 times [2020-09-25 04:17:51,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:51,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390799224] [2020-09-25 04:17:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:56,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:17:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:17:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:17:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:56,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:17:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:17:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:59,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:17:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:17:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking...